CPC Main Group
H01T 21/00 Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs
Filing statistics
CPC H01T 21/00 belongs to the parent subclass H01T, which recorded 13,254 patent applications worldwide between 2013 and 2023. Annual filings declined from 1,160 in 2013 to 705 in 2023 (-39%), peaking at 1,619 applications in 2018. The most active applicants in class H01 are SAMSUNG ELECTRONICS COMPANY (37,897 applications), TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY (36,116 applications) and APPLIED MATERIALS (21,640 applications).
Source: EPO PATSTAT, worldwide filings
2 direct subcodes
Child Classifications
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- H01T 21/02 of sparking plugs
- H01T 21/06 Adjustment of spark gaps (sparking-plugs having movable electrodes for adjusting the gap H01T13/26)
Top Applicants
Top 10 applicants by patent filingsfor 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