CPC Main Group
H01G 9/00 Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
Filing statistics
CPC H01G 9/00 belongs to the parent subclass H01G, which recorded 84,475 patent applications worldwide between 2013 and 2023. Annual filings grew from 6,481 in 2013 to 7,606 in 2023 (+17%), peaking at 8,803 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
12 direct subcodes
Child Classifications
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- H01G 9/004 Details
- H01G 9/145 Liquid electrolytic capacitors (H01G11/00 takes precedence)
- H01G 9/15 Solid electrolytic capacitors (H01G11/00 takes precedence)
- H01G 9/16 specially for use as rectifiers or detectors (H01G9/22 takes precedence)
- H01G 9/18 Self-interrupters
- H01G 9/20 Light-sensitive devices
- H01G 9/21 Temperature-sensitive devices
- H01G 9/22 Devices using combined reduction and oxidation, e.g. redox arrangement or solion
- H01G 9/26 Structural combinations of electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices with each other
- H01G 9/28 Structural combinations of electrolytic capacitors, rectifiers, detectors, switching devices with other electric components not covered by this subclass
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