H01G CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10)
Introduced: September 1968
Description
H01G encompasses electrolytic capacitors and related electrolytic devices designed for energy storage and signal processing applications. The class covers capacitor construction, materials, and designs including aluminum, tantalum, and other electrolytic systems, as well as electrolytic rectifiers, detectors, and switching devices that rely on electrolytic phenomena. It also includes light-sensitive and temperature-sensitive devices utilizing electrolytic principles for sensing applications. Related non-electrolytic capacitors, conventional rectifier diodes, and discrete transistor switching devices are classified elsewhere in the H01 section.
Title
Titles differ between systems:
IPC: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
CPC: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10)
Full Title
Full titles differ between systems:
CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10)
Additional Content IPC
Limiting references
Selection of specified materials as dielectric Capacitors having potential barriers ,
Application references
Indicating or measuring liquid level, or level of fluent solid material by measuring variations of capacity of capacitors Measuring temperature using capacitive elements Impedance networks utilising capacitors Printed circuits incorporating printed capacitors Capacitors as a component of an integrated circuit, e.g. stacked capacitors in DRAMs ,
IPC and CPC are identically structured here. All 9 subcodes exist in both systems.
4 shared codes have differing titles between IPC and CPC.
Child Classifications
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- H01G 11/00 Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof since 2013 IPC+CPC Available in IPC and CPC
- H01G 13/00 Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00 +2 CPC IPC+CPC Available in IPC and CPC
- H01G 15/00 Structural combinations of capacitors or other devices covered by at least two different main groups of this subclass with each other (involving at least one hybrid or electric double-layer [EDL] capacitor as the main component H01G11/08) since 1995 IPC+CPC Available in IPC and CPC
- H01G 17/00 Structural combinations of capacitors or other devices covered by at least two different main groups of this subclass with other electric elements, not covered by this subclass, e.g. RC combinations since 1995 IPC+CPC Available in IPC and CPC
- H01G 2/00 Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00 since 1995 IPC+CPC Available in IPC and CPC
- H01G 4/00 Fixed capacitors; Processes of their manufacture (electrolytic capacitors H01G9/00) since 1974 IPC+CPC Available in IPC and CPC
- H01G 5/00 Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture +1 CPC IPC+CPC Available in IPC and CPC
- H01G 7/00 Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture IPC+CPC Available in IPC and CPC
- H01G 9/00 Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture +2 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