DIFF Subgroup
H01J 7/14 Means for obtaining or maintaining the desired pressure within the vessel
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Details not provided for in groups and common to two or more basic types of discharge tubes or lamps > Means for obtaining or maintaining the desired pressure within the vessel
CPC:
Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps > Means for obtaining or maintaining the desired pressure within the vessel
IPC and CPC are identically structured here. All 4 subcodes exist in both systems.
Child Classifications
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- H01J 7/16 Means for permitting pumping during operation of the tube or lamp IPC+CPC Available in IPC and CPC
- H01J 7/18 Means for absorbing or adsorbing gas, e.g. by gettering +2 CPC IPC+CPC Available in IPC and CPC
- H01J 7/20 Means for producing, introducing, or replenishing gas or vapour during operation of the tube or lamp IPC+CPC Available in IPC and CPC
- H01J 7/22 Tubulations therefor, e.g. for exhausting; Closures therefor 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