BL TECHNOLOGIES, INC. logo

BL TECHNOLOGIES, INC.

93 Live Marks
110 on record
Corp.
First Filed:Jul 15, 1957Latest Filed:Jun 23, 2026Address:5951 Clearwater Drive, Minnetonka, MN 55343, US

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Top Classes

Class 1
Industrial Chemicals & Adhesives
47(43%)
Class 11
HVAC, Lighting & Kitchen Appliances
26(24%)
Class 9
Electronics, Software & Scientific Equipment
14(13%)

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Trademark Activity Timeline(1980 – 2026)

Trademark Portfolio

110 results

(current & previous marks)

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Filed
Registered
Last Activity
SMARTO3
SMARTO3
Trademark
Word
PENDING
Owner:
Serial:99901421
Filed:Jun 23, 2026
Classes:9, 11
Description: Class 9: Software for monitoring ozonation installations; measuring and monitoring apparatus and instruments applied to ozonation installations, namely, sensors for measuring concentrations of chemicals in water, scientific instrumentation for measuring concentrations of chemicals in water, electronic-based instruments for measuring environmental parameters including humidity, mold, bacteria, air quality and water quality, scientific apparatus for use with membrane filtration, namely, water filter controllers and computer software for detecting and measuring water quality; programmable computer-controlled apparatus and electric installations for remote monitoring and remote control of ozone generation systems; contactors, namely, electrical components in the nature of electric contactors for bringing together ozone or ozonated air with the product to be treated in ozonation installations
Class 11: Electric apparatus and instruments for generating ozone from gases such as air or oxygen for sanitizing air and water; Electrostatic apparatus and installations for water treatment and purification
RECIRC
RECIRC
Trademark
Word
REGISTERED
Owner:
Serial:99015122
Filed:Jan 22, 2025
Classes:1
Registration:8288184
Registered:Jun 2, 2026
Description: Industrial treatment chemicals for the plastic recycling process
DURAFOUL
DURAFOUL
Trademark
Word
PENDING
Owner:
Serial:98960564
Filed:Jan 14, 2025
Classes:11
Description: Water filtration apparatus; water purification apparatus; reverse osmosis membrane; reverse osmosis filtration units; water filtration apparatus and replacement parts in the nature of membranes, filters, brackish water reverse osmosis filter elements and filters for process water used within industrial processes, for drinking water, wastewater treatment applications, and process water applications
DESALNEXT
DESALNEXT
Trademark
Word
PENDING
Owner:
Serial:98438662
Filed:Mar 7, 2024
Classes:11
Description: Fluid filtration apparatus, namely, membranes, filters, and filter elements for use in water filtration and fluid filtration for water wastewater, oil and gas, dairy, food, beverage, minerals, pharmacological, medical, mining, and metallurgy separation processes
SIEVERS SOLEIL
SIEVERS SOLEIL
Trademark
Word
REGISTERED
Owner:
Serial:97733729
Filed:Dec 28, 2022
Classes:9
Registration:8178808
Registered:Mar 17, 2026
Description: Bioburden detection instruments, namely, non-medical devices in the nature of liquid analyzers for detecting microbe levels in liquid samples
MEMDENSE
MEMDENSE
Service Mark
Word
PENDING
Owner:
Serial:97455928
Filed:Jun 13, 2022
Classes:40
Description: Wastewater treatment services
ZEENAMMOX
ZEENAMMOX
Service Mark
Word
ABANDONED
Owner:
Serial:97426289
Filed:May 24, 2022
Classes:40
Description: Wastewater treatment services
LEAPFAS
LEAPFAS
Trademark
Word
REGISTERED
Owner:
Serial:97357159
Filed:Apr 11, 2022
Classes:11
Registration:7516809
Registered:Sep 24, 2024
Description: Collection system used in water purification comprised of well-screens in the nature of septum strainers for water lines for the under drain of tanks, metal pipework leading into the external metal ring header pipework, and nozzles for water purification installation
COMPRISE
COMPRISE
Service Mark
Word
REGISTERED
Owner:
Serial:97213470
Filed:Jan 11, 2022
Classes:42
Registration:7190656
Registered:Oct 10, 2023
Description: Providing temporary use of non-downloadable computer software for collecting and analyzing data from remote monitoring and diagnostic testing equipment
PHOENIX
PHOENIX
Trademark
Word
ABANDONED
Owner:
Serial:90710046
Filed:May 13, 2021
Classes:1
ZEEDENSE
ZEEDENSE
Service Mark
Word
REGISTERED
Owner:
Serial:88942581
Filed:Jun 1, 2020
Classes:40
Registration:7081089
Registered:Jun 13, 2023
Description: Wastewater treatment services
ZEENAMMOX
ZEENAMMOX
Trademark
Word
ABANDONED
Owner:
Serial:88896964
Filed:May 1, 2020
Classes:11
INSIGHT
INSIGHT
Trademark
Word
REGISTERED
Owner:
Serial:88822772
Filed:Mar 5, 2020
Classes:9, 42
Registration:6392544
Registered:Jun 22, 2021
Description: Class 9: Downloadable software in the nature of a mobile application for use by water treatment professionals, for monitoring and managing water treatment facility data and analytics
Class 42: Platform as a service (PAAS) featuring computer software platforms for use by water treatment professionals, for monitoring and managing water treatment facility data and analytics
SEABREEZE
SEABREEZE
Trademark
Word
ABANDONED
Owner:
Serial:88578778
Filed:Aug 14, 2019
Classes:11
COMPRISE
COMPRISE
Trademark
Word
ABANDONED
Owner:
Serial:88075518
Filed:Aug 13, 2018
Classes:9
CRUDEPLUS
CRUDEPLUS
Service Mark
Word
REGISTERED
Owner:
Serial:87601352
Filed:Sep 8, 2017
Classes:42
Registration:5559143
Registered:Sep 11, 2018
Description: Chemical analysis and engineering services relating to hydrocarbon refining operations
SAFEZONE
SAFEZONE
Service Mark
Word
REGISTERED
Owner:
Serial:87601357
Filed:Sep 8, 2017
Classes:42
Registration:5593300
Registered:Oct 30, 2018
Description: Chemical analysis and engineering services related to hydrocarbon refining operations
PROSOLV
PROSOLV
Trademark
Word
REGISTERED
Owner:
Serial:87587591
Filed:Aug 29, 2017
Classes:1
Registration:5698364
Registered:Mar 12, 2019
Description: Chemicals for use in hydrocarbon extraction operations
CORTROL
CORTROL
Trademark
Word
REGISTERED
Owner:
Serial:87519452
Filed:Jul 7, 2017
Classes:1
Registration:5692613
Registered:Mar 5, 2019
Description: Chemical products for use in boiler water and condensate systems
YIELDUP
YIELDUP
Trademark
Word
REGISTERED
Owner:
Serial:87482047
Filed:Jun 9, 2017
Classes:1
Registration:6245738
Registered:Jan 12, 2021
Description: Chemicals for use in petrochemical, petroleum and hydrocarbon processing, particularly ethylene processing
ZEELUNG
ZEELUNG
Trademark
Word
REGISTERED
Owner:
Serial:87330351
Filed:Feb 9, 2017
Classes:11
Registration:5251324
Registered:Jul 25, 2017
Description: Gas transfer membranes for use in the treatment of wastewater
ZEEBLOK
ZEEBLOK
Trademark
Word
CANCELLED
Owner:
Serial:86875085
Filed:Jan 14, 2016
Classes:11
Registration:5438731
Registered:Apr 3, 2018
DURASAN
DURASAN
Trademark
Word
REGISTERED
Owner:
Serial:86582312
Filed:Mar 31, 2015
Classes:11
Registration:5595979
Registered:Oct 30, 2018
Description: Spirally-wound elements and cartridges, reverse osmosis membranes, and filtration membrane elements contained within an outerwrap or protective sleeve for concentrating products and for removing impurities in fluid treatment systems for industrial use
OZONIA
OZONIA
Trademark
Stylized
REGISTERED
Owner:
Serial:85799900
Filed:Dec 11, 2012
Classes:11
Registration:4379532
Registered:Aug 6, 2013
Description: Ozone generators for purification of water and control equipment therefor sold as a unit
MEMCHEM
MEMCHEM
Trademark
Word
REGISTERED
Owner:
Serial:85778002
Filed:Nov 13, 2012
Classes:1
Registration:4383125
Registered:Aug 13, 2013
Description: Chemicals for use in the treatment of membranes used in the treatment / purification of water and other aqueous systems
MERCURXE
MERCURXE
Service Mark
Word
CANCELLED
Owner:
Serial:85647346
Filed:Jun 8, 2012
Classes:42
Registration:4333901
Registered:May 14, 2013
APOGEE
APOGEE
Service Mark
Word
CANCELLED
Owner:
Serial:85639459
Filed:May 31, 2012
Classes:42
Registration:4337527
Registered:May 21, 2013
BUTACLEAN
BUTACLEAN
Trademark
Word
REGISTERED
Owner:
Serial:85600619
Filed:Apr 17, 2012
Classes:1
Registration:4908976
Registered:Mar 1, 2016
Description: Chemicals for use in the processing of petrochemicals
COALPLUS
COALPLUS
Service Mark
Word
REGISTERED
Owner:
Serial:85592680
Filed:Apr 9, 2012
Classes:42
Registration:4337371
Registered:May 21, 2013
Description: Engineering and engineering consulting services related to the treatment and combustion of coal
POWERTREAT
POWERTREAT
Trademark
Word
CANCELLED
Owner:
Serial:85546260
Filed:Feb 17, 2012
Classes:1
Registration:4415494
Registered:Oct 8, 2013
FUELSOLV
FUELSOLV
Trademark
Word
REGISTERED
Owner:
Serial:85419153
Filed:Sep 9, 2011
Classes:1
Registration:4145908
Registered:May 22, 2012
Description: Chemical products for use in preventing corrosion and deposits in fuel handling and storage systems, boiler systems, and combustion turbines
TRUESENSE
TRUESENSE
Service Mark
Word
REGISTERED
Owner:
Serial:85147708
Filed:Oct 7, 2010
Classes:42
Registration:4154837
Registered:Jun 5, 2012
Description: Chemical engineering services related to the treatment of aqueous systems; monitoring services of aqueous systems to assess treatment; diagnostic services of aqueous systems to assess treatment
TRUESENSE
TRUESENSE
Trademark
Word
REGISTERED
Owner:
Serial:85121715
Filed:Sep 2, 2010
Classes:9, 42
Registration:4148549
Registered:May 29, 2012
Description: Computer software for the storage of historical data and information management of process data related to the treatment of water and process applications; Providing temporary use of on-line non-downloadable computer software for the storage of historical data and information management of process data related to the treatment of water and process applications
TRUESENSE
TRUESENSE
Trademark
Word
REGISTERED
Owner:
Serial:77879988
Filed:Nov 24, 2009
Classes:9
Registration:3803163
Registered:Jun 15, 2010
Description: Electronic apparatus for use in the treatment of aqueous systems, namely, to analyze the system conditions and apply the appropriate chemical treatment
GENGARD
GENGARD
Trademark
Word
REGISTERED
Owner:
Serial:77808731
Filed:Aug 20, 2009
Classes:1
Registration:3767324
Registered:Mar 30, 2010
Description: Chemicals for the treatment of cooling water systems
ENDCOR
ENDCOR
Trademark
Word
REGISTERED
Owner:
Serial:77418915
Filed:Mar 11, 2008
Classes:1
Registration:3515746
Registered:Oct 14, 2008
Description: Chemical products for use as corrosion inhibitors in commercial, municipal and industrial water and processing systems
OSMO
OSMO
Trademark
Word
REGISTERED
Owner:
Serial:78686647
Filed:Aug 5, 2005
Classes:11
Registration:3424216
Registered:May 6, 2008
Description: Equipment for treating water and other liquids, namely, reverse osmosis membranes, and reverse osmosis membrane units
SENSICORE
SENSICORE
Trademark
Word
CANCELLED
Owner:
Serial:78552698
Filed:Jan 24, 2005
Classes:9
Registration:3050539
Registered:Jan 24, 2006
WATERNOW
WATERNOW
Service Mark
Word
CANCELLED
Owner:
Serial:78457248
Filed:Jul 27, 2004
Classes:42
Registration:3112853
Registered:Jul 4, 2006
Z-MOD
Z-MOD
Trademark
Word
REGISTERED
Owner:
Serial:78370790
Filed:Feb 19, 2004
Classes:11
Registration:3431113
Registered:May 20, 2008
Description: MODULAR, PRE-ASSEMBLED AND FACTORY TESTED WATER FILTERING UNITS FOR COMMERCIAL, MUNICIPAL AND INDUSTRIAL USE; WATER PURIFICATION UNITS FOR POTABLE WATER FOR COMMERCIAL, MUNICIPAL OR INDUSTRIAL USE AND SEWAGE TREATMENT AND REUSE PLANTS; HIGH PURITY WATER FILTRATION UNITS FOR COMMERCIAL AND INDUSTRIAL USE
DIANODIC
DIANODIC
Trademark
Word
REGISTERED
Owner:
Serial:76539618
Filed:Aug 22, 2003
Classes:1
Registration:2905887
Registered:Nov 30, 2004
Description: Chemicals for use in cooling water
ABMET
ABMET
Service Mark
Word
CANCELLED
Owner:
Serial:76513056
Filed:May 9, 2003
Classes:40
Registration:2952643
Registered:May 17, 2005
Description: Water treatment services, namely providing removal of pollutants, metals and other contaminants from water supplies
ABMET
ABMET
Trademark
Word
CANCELLED
Owner:
Serial:76513054
Filed:May 9, 2003
Classes:1, 11
Registration:2992870
Registered:Sep 6, 2005
Description: WATER TREATMENT CHEMICALS FOR USE IN WASTE WATER INDUSTRIAL USE OR DRINKING WATER PROCESSING; WATER TREATMENT EQUIPMENT, NAMELY BIO-REACTORS
XPLEAT
XPLEAT
Trademark
Word
REGISTERED
Owner:
Serial:76482711
Filed:Jan 16, 2003
Classes:11
Registration:2857417
Registered:Jun 29, 2004
Description: Water treatment equipment, namely, filter cartridges
Z.PLEX
Z.PLEX
Trademark
Word
REGISTERED
Owner:
Serial:76482708
Filed:Jan 16, 2003
Classes:11
Registration:2857416
Registered:Jun 29, 2004
Description: Water treatment equipment, namely, filter cartridges
S
S
Trademark
Combined
CANCELLED
Owner:
Serial:76257621
Filed:May 16, 2001
Classes:7
Registration:2948546
Registered:May 10, 2005
Description: MICROSYSTEM MACHINE FOR ANALYZING THE CHEMISTRY OF LIQUIDS IN THE FIELD OF CHEMICAL AND BIOLOGICAL ANALYSIS
SELEX
SELEX
Trademark
Word
REGISTERED
Owner:
Serial:76210947
Filed:Feb 15, 2001
Classes:11
Registration:2623789
Registered:Sep 24, 2002
Description: Depth filter units and depth filter cartridges for liquid and air filtration for domestic, industrial, and commercial use
REDIFEED
REDIFEED
Trademark
Word
REGISTERED
Owner:
Serial:76023092
Filed:Apr 10, 2000
Classes:9
Registration:2521226
Registered:Dec 18, 2001
Description: Apparatus, namely, electronic control unit for feeding water treatment chemicals to water systems, namely, boiler water systems, cooling water systems, and closed water systems
TONKAFLO
TONKAFLO
Trademark
Word
REGISTERED
Owner:
Serial:75728722
Filed:Jun 15, 1999
Classes:7
Registration:2329936
Registered:Mar 14, 2000
Description: Centrifugal Pumps
FERROQUEST
FERROQUEST
Trademark
Word
REGISTERED
Owner:
Serial:75518775
Filed:Jul 14, 1998
Classes:1
Registration:2277956
Registered:Sep 14, 1999
Description: Chemical products, namely, rust removal agents for use in industrial water and process systems
PROOF NOT PROMISES
PROOF NOT PROMISES
Service Mark
Word
REGISTERED
Owner:
Serial:75483439
Filed:May 12, 1998
Classes:42
Registration:2228995
Registered:Mar 2, 1999
Description: Engineering and consulting services in the fields of water treatment, industrial fuel processing system treatment,
OPTITHERM
OPTITHERM
Service Mark
Word
REGISTERED
Owner:
Serial:75469449
Filed:Apr 17, 1998
Classes:37
Registration:2296951
Registered:Nov 30, 1999
Description: Chemical cleaning services for glass-lined reactor vessels used in the chemical and pharmaceutical processing industries
SOLISEP
SOLISEP
Trademark
Word
REGISTERED
Owner:
Serial:75399731
Filed:Nov 26, 1997
Classes:1
Registration:2246724
Registered:May 18, 1999
Description: Chemical products for use in filtration separation and foam control in industrial process systems
SCALETROL
SCALETROL
Trademark
Word
REGISTERED
Owner:
Serial:75340674
Filed:Jul 30, 1997
Classes:1
Registration:2187697
Registered:Sep 8, 1998
Description: Chemicals and chemical compositions for use in the abatement of deposits in water and industrial process systems
BIOMATE
BIOMATE
Trademark
Word
REGISTERED
Owner:
Serial:75340487
Filed:Jul 24, 1997
Classes:1
Registration:2333593
Registered:Mar 21, 2000
Description: Water treatment chemicals and chemical compositions for use as microbiocides in the treatment of industrial process water
FLOGARD
FLOGARD
Trademark
Word
REGISTERED
Owner:
Serial:75340486
Filed:Jul 24, 1997
Classes:1
Registration:2427214
Registered:Feb 6, 2001
Description: Liquid corrosion and/or deposition inhibitors sold in bulk to industrial and commercial customers for use in water stabilization treatment for influent water or once through system
FOODPRO
FOODPRO
Trademark
Word
REGISTERED
Owner:
Serial:75340439
Filed:Jul 24, 1997
Classes:1
Registration:2244305
Registered:May 11, 1999
Description: Chemicals and chemical compositions for use as foam and deposit control agents and separation aids in industrial process systems in the food and beverage industry
METCLEAR
METCLEAR
Trademark
Word
REGISTERED
Owner:
Serial:75340441
Filed:Jul 24, 1997
Classes:1
Registration:2248802
Registered:Jun 1, 1999
Description: Chemicals and chemical compositions for use in reducing metallic contaminants in water and wastewater treatment systems
PROSWEET
PROSWEET
Trademark
Word
REGISTERED
Owner:
Serial:75340440
Filed:Jul 24, 1997
Classes:1
Registration:2383603
Registered:Sep 5, 2000
Description: Chemicals and chemical compositions for use in water and wastewater treatment systems
SPECTRUS
SPECTRUS
Trademark
Word
REGISTERED
Owner:
Serial:75303600
Filed:Jun 5, 1997
Classes:5
Registration:2220959
Registered:Jan 26, 1999
Description: Biocidal chemicals and biocidal chemical compositions for use in industrial cooling water systems
HYPERSPERSE
HYPERSPERSE
Trademark
Word
REGISTERED
Owner:
Serial:75242726
Filed:Feb 18, 1997
Classes:1
Registration:2135762
Registered:Feb 10, 1998
Description: Chemical pretreatment used to optimize reverse osmosis water treatment systems
JELCLEER
JELCLEER
Trademark
Word
REGISTERED
Owner:
Serial:75242727
Filed:Feb 18, 1997
Classes:21
Registration:2137219
Registered:Feb 17, 1998
Description: Glass beads for use as filtration media in water treatment systems
DELTAFLOW
DELTAFLOW
Service Mark
Word
REGISTERED
Owner:
Serial:75241108
Filed:Feb 11, 1997
Classes:40
Registration:2293869
Registered:Nov 23, 1999
Description: Water treatment services, namely, water purifying, demineralizing, and deoxygenation; on-site water treatment using mobile equipment and making such treated water available for industrial consumption on site
WASTEWIZARD
WASTEWIZARD
Trademark
Word
REGISTERED
Owner:
Serial:75105576
Filed:May 17, 1996
Classes:11
Registration:2063117
Registered:May 20, 1997
Description: Fluid separation units, concentration units and recycling units
E-CELL
E-CELL
Trademark
Word
REGISTERED
Owner:
Serial:75097057
Filed:May 1, 1996
Classes:11
Registration:2196237
Registered:Oct 13, 1998
Description: Electrochemical liquid purification units for use in the industrial sector
PROSWEET
PROSWEET
Trademark
Word
REGISTERED
Owner:
Serial:75092779
Filed:Apr 23, 1996
Classes:1
Registration:2040676
Registered:Feb 25, 1997
Description: Chemicals and chemical compositions for use in oil and gas processing and petro-chemical systems
DUSTREAT
DUSTREAT
Trademark
Word
REGISTERED
Owner:
Serial:75046753
Filed:Jan 22, 1996
Classes:1
Registration:2086496
Registered:Aug 5, 1997
Description: Chemicals and chemical compositions used to suppress dust, for industrial use
SIEVERS
SIEVERS
Trademark
Word
REGISTERED
Owner:
Serial:74696475
Filed:Jun 21, 1995
Classes:9
Registration:2025045
Registered:Dec 24, 1996
Description: Chemical detection instruments
SIDTEC
SIDTEC
Service Mark
Word
REGISTERED
Owner:
Serial:74685275
Filed:Jun 6, 1995
Classes:37
Registration:1983942
Registered:Jul 2, 1996
Description: Maintenance services for heat transfer systems and condensers
CHEMSURE
CHEMSURE
Trademark
Word
REGISTERED
Owner:
Serial:74662690
Filed:Apr 17, 1995
Classes:39
Registration:2027796
Registered:Dec 31, 1996
Description: Chemical delivery, storage and handling services in the field of water treatment
STYREX
STYREX
Trademark
Word
REGISTERED
Owner:
Serial:74631465
Filed:Feb 8, 1995
Classes:1
Registration:1948877
Registered:Jan 16, 1996
Description: Chemicals and chemical compositions for use in the processing of hydrocarbons
OPTI-GUARD
OPTI-GUARD
Trademark
Word
REGISTERED
Owner:
Serial:74621158
Filed:Jan 11, 1995
Classes:1
Registration:1976082
Registered:May 28, 1996
Description: Chemicals and chemical compositions for the treatment of boiler water and steam generating systems
ZEEWEED
ZEEWEED
Trademark
Word
REGISTERED
Owner:
Serial:74594163
Filed:Nov 2, 1994
Classes:11
Registration:2039646
Registered:Feb 25, 1997
Description: Hollow fiber membranes for water filtration used in the purification of industrial water
AUTOSDI
AUTOSDI
Trademark
Word
CANCELLED
Owner:
Serial:74480522
Filed:Jan 19, 1994
Classes:9
Registration:1877487
Registered:Feb 7, 1995
Description: Silt density measuring device
DURATHERM
DURATHERM
Trademark
Word
REGISTERED
Owner:
Serial:74466346
Filed:Dec 3, 1993
Classes:11
Registration:1930599
Registered:Oct 31, 1995
Description: Spirally wound membrane elements or cartridges for concentrating products and/or removing impurities in fluid treatment systems for high temperature feed application
DEPOSITROL
DEPOSITROL
Trademark
Word
REGISTERED
Owner:
Serial:74427010
Filed:Aug 19, 1993
Classes:1
Registration:1840201
Registered:Jun 21, 1994
Description: Chemicals and chemical compositions for use in the treatment of industrial cooling water systems
MAX-AMINE
MAX-AMINE
Trademark
Word
REGISTERED
Owner:
Serial:74402722
Filed:Jun 16, 1993
Classes:1
Registration:1901107
Registered:Jun 20, 1995
Description: Chemicals and chemical compositions for use in hydrocarbon and gas processing systems
BIOPLUS
BIOPLUS
Trademark
Word
REGISTERED
Owner:
Serial:74380840
Filed:Apr 16, 1993
Classes:1, 11
Registration:1870258
Registered:Dec 27, 1994
Description: Bacteria cultures and nutrients for wastewater and sludge treatment
HYPURE
HYPURE
Trademark
Word
CANCELLED
Owner:
Serial:74350333
Filed:Jan 19, 1993
Classes:7
Registration:1938956
Registered:Nov 28, 1995
Description: Filter cartridges for various industrial machines for filtration applications including the filtration of coating solutions for the manufacture of magnetic tape; the filtration of petrochemicals, potable water, beer in the brewing industry, and other specialty chemicals; but excluding any filtration of dry cleaning solutions
DURASAN
DURASAN
Trademark
Word
REGISTERED
Owner:
Serial:74329390
Filed:Nov 9, 1992
Classes:11
Registration:1850635
Registered:Aug 23, 1994
Description: Spirally-wound elements or cartridges contained within a tubular plastic sleeve for concentrating products and/or for removing impurities in fluid treatment systems for industrial use