DIFF Main Group
H01K 1/00 Details
Introduced: September 1968
IPC and CPC are identically structured here. All 13 subcodes exist in both systems.
2 shared codes have differing titles between IPC and CPC.
Child Classifications
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- H01K 1/36 Seals between parts of vessel, e.g. between stem and envelope IPC+CPC Available in IPC and CPC
- H01K 1/42 Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp IPC+CPC Available in IPC and CPC
- H01K 1/50 Selection of substances for gas fillings; Specified pressure thereof IPC+CPC Available in IPC and CPC
- H01K 1/52 Means for obtaining or maintaining the desired pressure within the vessel IPC+CPC Available in IPC and CPC
- H01K 1/60 Means structurally associated with the lamp for indicating defects or previous use IPC+CPC Available in IPC and CPC
- H01K 1/62 One or more circuit elements structurally associated with the lamp +1 CPC 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