DIFF Subgroup
H05H 1/34 Details, e.g. electrodes, nozzles
Introduced: January 1980
Full Title
Full titles differ between systems:
IPC:
Generating plasma; Handling plasma > Generating plasma > Plasma torches > using an arc > Details, e.g. electrodes, nozzles
CPC:
Generating plasma; Handling plasma > Generating plasma > Plasma torches > using an arc (H05H1/28 takes precedence) > Details, e.g. electrodes, nozzles
CPC subdivides this area 7x more granularly than IPC with 18 additional codes.
18 codes are CPC-only extensions.
1 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 1980.
Child Classifications
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- H05H 1/36 Circuit arrangements (H05H1/38, H05H1/40 take precedence) since 1980 IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class H05,2013–2023, worldwide · Source: EPO PATSTAT
- SAMSUNG ELECTRONICS COMPANY KR 7,201
- PANASONIC INTELLECTUAL PROPERTY 6,828
- SEMICONDUCTOR ENERGY LABORATORY COMPANY 3,988
- LG ELECTRONICS KR 3,564
- PANASONIC INTELLECTUAL PROPERTY JP 3,533
- SAMSUNG DISPLAY KR 3,310
- FUJI JP 2,870
- SAMSUNG ELECTRO-MECHANICS COMPANY KR 2,675
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION 2,665
- MURATA MANUFACTURING COMPANY JP 2,634
Top Applicants (CPC)
Class H05,2013–2023, worldwide · Source: EPO PATSTAT
- SAMSUNG ELECTRONICS COMPANY KR 9,981
- SAMSUNG DISPLAY KR 5,041
- LG ELECTRONICS KR 4,742
- PHILIP MORRIS PRODUCTS CH 4,411
- PANASONIC INTELLECTUAL PROPERTY JP 3,915
- PANASONIC INTELLECTUAL PROPERTY 3,471
- SAMSUNG ELECTRO-MECHANICS COMPANY KR 3,210
- MURATA MANUFACTURING COMPANY JP 3,191
- FUJI JP 2,987
- SIGNIFY HOLDING NL 2,907