BEL FUSE INC. logo

BEL FUSE INC.

32 Marks
First Filed:Oct 12, 1955Latest Filed:Feb 1, 2024Address:300 Executive Drive, West Orange, NJ 07052

Portfolio Overview

Registered
12(38%)
Dead
20(63%)

Top Classes

Class 9
Electronics, Software & Scientific Equipment
32(100%)
Class 21
Kitchen Utensils & Household Containers
6(19%)
Class 26
Hair Accessories & Sewing Notions
1(3%)

TTAB Proceedings

Total Proceedings
6
As Plaintiff
3(50%)
As Defendant
3(50%)

Top Firms

Cozen O'Connor(Feb 2024)
17
OSTROLENK FABER LLP(Dec 2000)
6

Trademark Activity Timeline(1987 – 2025)

Trademark Portfolio

32 results

(current & previous marks)

Refine by Mark/Description🔽
Filed
Registered
Last Activity
CUI INC
CUI INC
Trademark
Combined
REGISTERED
Owner:
Serial:98386427
Filed:Feb 1, 2024
Classes:9
Registration:7954483
Registered:Sep 23, 2025
Goods & Services
Consumer electronic products, namely, power transformers, electric power converters, switching power supplies, DC-DC converters, external power adapters, electrical converters, thermal electrical converters, electric circuit switches, electric current control devices, electrical connectors, electrical connector cables, electrical interconnect connectors, electrical interconnect cables, electrical power connectors, electrical power cables, electrical power extension cords and cables, USB cables, USB connectors, modular electrical thermal connector, connection and terminal blocks and electrical strip blocks, diodes, Passive heat sinks for use in board level electrical systems and board level power components; consumer electronic products, namely, thermal management systems for electrical components and for electric systems, comprised primarily of Heat Sinks for use in electronic components, and also including Peltier devices in the nature of cooling and heating apparatus, Thermal Electric Modules, Thermal Substrate, and battery holders and cases; consumer electronic products, namely, oscillators; consumer electronic products, namely, sensors for electrical equipment comprised of thermal, motion, pressure, and photosensitive sensors and Liquid and Spatial Level, proximity, and flow sensors; electrical current resistors comprised of thermistors, varistors, and photo and light dependent, surface mount, and carbon film electric resistors; consumer electronic products, namely, electric current sensing resistors, electrical inductors, electrical Chokes, electrical noise filters, fuses for electric current for overcurrent protection, electrical and multimedia interface cables and connectors, electrical terminal blocks; "INC"
CUI INC A BEL GROUP
CUI INC A BEL GROUP
Trademark
Combined
REGISTERED
Owner:
Serial:98386519
Filed:Feb 1, 2024
Classes:9
Registration:7954484
Registered:Sep 23, 2025
Goods & Services
Consumer electronic products, namely, power transformers, electric power converters, switching power supplies, DC-DC converters, external power adapters, electrical converters, thermal electrical converters, electric circuit switches, electric current control devices, electrical connectors, electrical connector cables, electrical interconnect connectors, electrical interconnect cables, electrical power connectors, electrical power cables, electrical power extension cords and cables, USB cables, USB connectors, modular electrical thermal connector, connection and terminal blocks and electrical strip blocks, diodes, Passive heat sinks for use in board level electrical systems and board level power components; consumer electronic products, namely, thermal management systems for electrical components and for electric systems, comprised primarily of Heat Sinks for use in electronic components, and also including Peltier devices in the nature of cooling and heating apparatus, Thermal Electric Modules, Thermal Substrate, and battery holders and cases; consumer electronic products, namely, oscillators; consumer electronic products, namely, sensors for electrical equipment comprised of thermal, motion, pressure, and photosensitive sensors and Liquid and Spatial Level, proximity, and flow sensors; electrical current resistors comprised of thermistors, varistors, and photo and light dependent, surface mount, and carbon film electric resistors; consumer electronic products, namely, electric current sensing resistors, electrical inductors, electrical Chokes, electrical noise filters, fuses for electric current for overcurrent protection, electrical and multimedia interface cables and connectors, electrical terminal blocks; "INC" and "GROUP"
BEL GROUP
BEL GROUP
Trademark
Word
ABANDONED
Owner:
Serial:90624203
Filed:Apr 5, 2021
Classes:9
Goods & Services
"GROUP"
BEL INC.
BEL INC.
Trademark
Word
ABANDONED
Owner:
Serial:90624134
Filed:Apr 5, 2021
Classes:9
Goods & Services
"INC."
86530279
86530279
Trademark
Design
REGISTERED
Owner:
Serial:86530279
Filed:Feb 10, 2015
Classes:9
Registration:5486840
Registered:Jun 5, 2018
Goods & Services
Electronic components for the computer networking, telecommunications, transportation, defense and aerospace industries, namely, LAN, Ethernet and telecom magnetics and connectors, namely, plug connectors for computers, USB connectors, namely, USB cables, and magnetic connectors, namely, modular jack connectors, magnetic contacts, cable connectors; power conversion and power management solutions, namely, electric fuse boxes, electrical controllers, circuit protection radial fuses, standard glass and ceramic cartridge fuses; electronic connectors and cable assemblies, namely, cables for electrical and optical signal transmission systems; transformers
STEWART CONNECTOR A BEL GROUP
REGISTERED
Owner:
Serial:86530222
Filed:Feb 10, 2015
Classes:9
Registration:5475822
Registered:May 22, 2018
Goods & Services
"CONNECTOR" AND "GROUP"
SIGNAL TRANSFORMER A BEL GROUP
REGISTERED
Owner:
Serial:86527215
Filed:Feb 6, 2015
Classes:9
Registration:5082836
Registered:Nov 15, 2016
Goods & Services
"SIGNAL TRANSFORMER" AND "GROUP"
BEL MAGNETIC SOLUTIONS A BEL GROUP
REGISTERED
Owner:
Serial:86521557
Filed:Feb 2, 2015
Classes:9
Registration:5655970
Registered:Jan 15, 2019
Goods & Services
LAN, Ethernet and telecom magnetics and connectors, namely, plug connectors for computers, USB connectors, namely, USB cables, and magnetic connectors, namely, modular jack connectors, magnetic contacts and cable connectors; "MAGNETIC SOLUTIONS" AND "GROUP"
BEL POWER | PROTECT | CONNECT
REGISTERED
Owner:
Serial:86521457
Filed:Feb 2, 2015
Classes:9
Registration:5469954
Registered:May 15, 2018
Goods & Services
"POWER" AND "CONNECT"
BEL POWER SOLUTIONS & PROTECTION A BEL GROUP
Owner:
Serial:86521644
Filed:Feb 2, 2015
Classes:9
Registration:5418560
Registered:Mar 6, 2018
Goods & Services
"POWER SOLUTIONS & PROTECTION" AND "GROUP"
T
T
Trademark
Stylized
CANCELLED
Owner:
Serial:85861354
Filed:Feb 27, 2013
Classes:9
Registration:4548751
Registered:Jun 10, 2014
Goods & Services
Electrical connectors and transformers
T TRP CONNECTOR
T TRP CONNECTOR
Trademark
Stylized
CANCELLED
Owner:
Serial:85861363
Filed:Feb 27, 2013
Classes:9
Registration:4696478
Registered:Mar 3, 2015
Goods & Services
"CONNECTOR"
CUI INC
CUI INC
Trademark
Word
REGISTERED
Owner:
Serial:77667159
Filed:Feb 10, 2009
Classes:9
Registration:3675961
Registered:Sep 1, 2009
Goods & Services
Class 009: Consumer electronic products, namely, [ audio speakers, electrical audio and speaker cables and connectors, buzzers, encoders, ] power transformers, linear power supplies, [ microphones, electronic sensors, thermal management devices, ] power converters, and power inverters
COMPONENTS FOR A CONNECTED PLANET
CANCELLED
Owner:
Serial:76275211
Filed:Jun 22, 2001
Classes:9
Registration:2776334
Registered:Oct 21, 2003
Goods & Services
ELECTRICAL FUSES, MICRO FUSES, MINIATURE FUSES, FUSE, CLIPS, DELAY LINES AND DELAY MODULES, OSCILLATORS FOR SUBSEQUENT MANUFACTURED ELECTRICAL AND ELECTRONIC PRODUCTS, PULSE TRANSFORMERS, DC-DC CONVERTERS, AC-DC CONVERTERS; ELECTRICAL COMPONENTS, NAMELY, CONNECTORS FOR USE WITH ELECTRICAL AND ELECTRONIC PRODUCTS, CONNECTING JACKS, CONNECTING JACKS INCORPORATING FILTER NETWORKS AND/OR TRANSFORMERS, HYBRID MICROCIRCUITS; INDUCTIVE COMPONENTS FOR CONNECTION TO PRINTED CIRCUIT BOARDS OR FOR USE IN TELECOMMUNICATION EQUIPMENT, NAMELY CENTRAL OFFICE INSTALLATIONS OF TELECOMMUNICATIONS SERVICES PROVIDERS AND INTERNAL AND FACILITY NETWORKS FOR TELECOMMUNICATIONS
BELCOMBO
BELCOMBO
Trademark
Stylized
CANCELLED
Owner:
Serial:76185186
Filed:Dec 22, 2000
Classes:9
Registration:2506675
Registered:Nov 13, 2001
COMPONENTS FOR A CONNECTED WORLD
ABANDONED
Owner:
Serial:76155780
Filed:Oct 27, 2000
Classes:9
MAG JACK
MAG JACK
Trademark
Word
ABANDONED
Owner:
Serial:75752325
Filed:Jul 15, 1999
Classes:9
Goods & Services
JACK CONNECTOR INCORPORATING A FILTER NETWORK, INCLUDING TRANSFORMERS AND RESISTOR ELEMENTS, FOR CONNECTION TO PRINTED CIRCUIT BOARDS; "jack"
BELMAG
BELMAG
Trademark
Word
CANCELLED
Owner:
Serial:75646476
Filed:Feb 24, 1999
Classes:9
Registration:2451689
Registered:May 15, 2001
Goods & Services
ELECTRICAL COMPONENTS, NAMELY, CONNECTORS AND JACKS
BELSTACK
BELSTACK
Trademark
Word
CANCELLED
Owner:
Serial:75646943
Filed:Feb 24, 1999
Classes:9
Registration:2451691
Registered:May 15, 2001
Goods & Services
ELECTRICAL COMPONENTS, NAMELY, CONNECTORS AND JACKS
BELSTICK
BELSTICK
Trademark
Word
CANCELLED
Owner:
Serial:75646498
Filed:Feb 24, 1999
Classes:9
Registration:2451690
Registered:May 15, 2001
Goods & Services
Electrical components, namely, connectors and jacks
ONE-PAK
ONE-PAK
Trademark
Word
ABANDONED
Owner:
Serial:74373884
Filed:Mar 31, 1993
Classes:9
Goods & Services
electrical circuits
BEL
BEL
Trademark
Stylized
REGISTERED
Owner:
Serial:74027910
Filed:Feb 12, 1990
Classes:9
Registration:1624608
Registered:Nov 27, 1990
Goods & Services
dc - dc converters, pulse transformers, micro-circuits, hybrid circuits
SURFUSE
SURFUSE
Trademark
Word
CANCELLED
Owner:
Serial:73648598
Filed:Mar 9, 1987
Classes:9
Registration:1458157
Registered:Sep 22, 1987
Goods & Services
Class 009: FUSES
MICROBEL
MICROBEL
Trademark
Word
EXPIRED
Owner:
Serial:73165057
Filed:Apr 5, 1978
Classes:9
Registration:1105553
Registered:Nov 7, 1978
Goods & Services
MINIFUSE FUSES
1212
1212
Trademark
Word
CANCELLED
Owner:
Serial:73061316
Filed:Aug 25, 1975
Classes:9
Registration:1066111
Registered:May 24, 1977
Goods & Services
FUSES FOR TELEVISION SETS AND SMALL APPLIANCES
VARI-BEL
VARI-BEL
Trademark
Stylized
EXPIRED
Owner:
Serial:72200618
Filed:Aug 26, 1964
Classes:9, 26
Registration:0803852
Registered:Feb 15, 1966
Goods & Services
DELAY LINES
NANALINE
NANALINE
Trademark
Stylized
EXPIRED
Owner:
Serial:72124875
Filed:Jul 28, 1961
Classes:9, 21
Registration:0734851
Registered:Jul 24, 1962
Goods & Services
DELAY LINES
BEL
BEL
Trademark
Stylized
REGISTERED
Owner:
Serial:72088591
Filed:Jan 7, 1960
Classes:9, 21
Registration:0701716
Registered:Jul 26, 1960
Goods & Services
Fuses
BELFUSE
BELFUSE
Trademark
Stylized
REGISTERED
Owner:
Serial:72088589
Filed:Jan 7, 1960
Classes:9, 21
Registration:0701715
Registered:Jul 26, 1960
Goods & Services
Fuses
SLO-BEL
SLO-BEL
Trademark
Stylized
CANCELLED
Owner:
Serial:72088590
Filed:Jan 7, 1960
Classes:9, 21
Registration:0717456
Registered:Jun 27, 1961
Goods & Services
Fuses
BELIMITER
BELIMITER
Trademark
Stylized
EXPIRED
Owner:
Serial:72041881
Filed:Dec 6, 1957
Classes:9, 21
Registration:0666815
Registered:Sep 9, 1958
Goods & Services
FUSES
KEMFUZE
KEMFUZE
Trademark
Stylized
EXPIRED
Owner:
Serial:71696283
Filed:Oct 12, 1955
Classes:9, 21
Registration:0627284
Registered:May 22, 1956
Goods & Services
ELECTRICAL FUSES

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