IPC Definitions - January 01, 2012
H01G - Definition
This subclass covers:
Non-electrolytic, fixed and variable capacitors per se, details thereof, and structural combinations thereof with each other, with electrolytic devices covered by this subclass, or with other electric elements not covered by this subclass where the structure consists mainly of a capacitor.
Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices per se, details thereof, and structural combinations thereof with each other, with non-electrolytic capacitors or with other electric components not covered by this subclass.
Details common to two or more main types of devices covered by this subclass.
Processes and apparatus for manufacturing the capacitors, rectifiers, detectors, switching devices and light-sensitive or temperature-sensitive devices covered by this subclass.
References relevant to classification in this subclass
This subclass does not cover:
Selection of specified materials as dielectric | H01B 3/00 |
Capacitors with potential-jump or surface barrier | H01L 29/00, H01L 51/05 |
Indicating or measuring liquid level, or level of fluent solid material by measuring variations of capacity of capacitors | G01F 23/26 |
Measuring temperature using capacitive elements | G01K 7/34 |
Thin- or thick-film circuits; Capacitors as a component of an integrated circuit, e.g. stacked capacitors in DRAM's | H01L 27/00 |
Impedance networks utilizing capacitors | H03H |
Printed circuits incorporating printed capacitors | H05K 1/16 |
Attention is drawn to the following places, which may be of interest for search:
Powder metallurgy | B22F |
B32B | |
Compositions of ceramic materials | C04B 35/00 |
Polymeric films or sheets | C08J 5/18 |
Electrolytic coating by surface reaction, i.e. forming conversion layers | C25D 11/00-C25D 11/38 |
Measuring force or stress by measuring variations in capacitance | G01L 1/14 |
Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by making use of variations in capacitance | G01L 9/12 |
Investigating or analyzing material by investigating capacitance | G01N 27/22 |
Measuring capacitance; Measuring dielectric constants | G01R 27/26 |
Batteries and fuel cells | H01M |
In patent documents the following words "condenser" and "capacitor" are often used as synonyms.
In patent documents the following expressions/words: "supercapacitor", "ultracapacitor", and "electrochemical capacitor" are often used as synonyms for "double-layer capacitor", which is used in the classification scheme of this subclass.