Details

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive > Details

CPC:

Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive (switches actuated by melting of fusible material H01H37/76; disposition or arrangement of fuses on boards H02B1/18) > Details

Of 19 combined children, 14 exist in both systems.

5 codes are CPC-only extensions.

Note: 3 CPC extensions are marked as secondary classification only.

2 shared codes have differing titles between IPC and CPC.

Child Classifications

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H01H 2085/0216 2nd only CPC only CPC only
H01H 2085/0225 2nd only CPC only CPC only
H01H 2085/0233 2nd only CPC only CPC only
H01H 85/0208 CPC only CPC only
H01H 85/0241 +6 CPC CPC only CPC only
H01H 85/04 Fuses, i.e. expendable parts of the protective device, e.g. cartridges IPC+CPC Available in IPC and CPC
H01H 85/20 Bases for supporting the fuse; Separate parts thereof +14 CPC IPC+CPC Available in IPC and CPC
H01H 85/22 Intermediate or auxiliary parts for carrying, holding, or retaining fuse, co-operating with base or fixed holder, and removable therefrom for renewing the fuse IPC+CPC Available in IPC and CPC
H01H 85/24 Means for preventing insertion of incorrect fuse IPC+CPC Available in IPC and CPC
H01H 85/25 Safety arrangements preventing or inhibiting contact with live parts, including operation of isolation on removal of cover since 1990 IPC+CPC Available in IPC and CPC
H01H 85/26 Magazine arrangements +2 CPC IPC+CPC Available in IPC and CPC
H01H 85/30 Means for indicating condition of fuse structurally associated with the fuse +1 CPC IPC+CPC Available in IPC and CPC
H01H 85/34 Distinguishing marks, e.g. colour coding IPC+CPC Available in IPC and CPC
H01H 85/36 Means for applying mechanical tension to fusible member IPC+CPC Available in IPC and CPC
H01H 85/38 Means for extinguishing or suppressing arc (by powder filling H01H85/18; by mechanical tension applied to fusible member H01H85/36) +5 CPC IPC+CPC Available in IPC and CPC
H01H 85/43 Means for exhausting or absorbing gases liberated by fusing arc, or for ventilating excess pressure generated by heating since 1990 IPC+CPC Available in IPC and CPC
H01H 85/44 Structural association with a spark-gap arrester IPC+CPC Available in IPC and CPC
H01H 85/46 Circuit arrangements not adapted to a particular application of the protective device +2 CPC IPC+CPC Available in IPC and CPC
H01H 85/47 Means for cooling since 1990 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class H01,2013–2023, worldwide · Source: EPO PATSTAT

TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 43,574
SAMSUNG ELECTRONICS COMPANY KR 42,206
LG CHEM KR 21,383
APPLIED MATERIALS US 20,441
LG ENERGY SOLUTION KR 20,279
SAMSUNG DISPLAY KR 19,725
CHINESE ACADEMY OF SCIENCES 19,400
TOYOTA MOTOR CORPORATION 18,819
SGCC(STATE GRID CORPORATION OF CHINA) 18,082
TOKYO ELECTRON JP 17,634

Top Applicants (CPC)

Class H01,2013–2023, worldwide · Source: EPO PATSTAT

SAMSUNG ELECTRONICS COMPANY KR 37,897
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 36,116
APPLIED MATERIALS US 21,640
LG ENERGY SOLUTION KR 20,770
LG CHEM KR 19,835
TOKYO ELECTRON JP 18,519
ROBERT BOSCH DE 14,595
INTEL CORPORATION US 13,580
MURATA MANUFACTURING COMPANY JP 12,151
SAMSUNG SDI COMPANY KR 12,080