CPC Subgroup
H05B 47/20 Responsive to malfunctions or to light source life; for protection
Full Title
Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant > Responsive to malfunctions or to light source life; for protection
7 direct subcodes
Child Classifications
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- H05B 47/21 of two or more light sources connected in parallel
- H05B 47/23 of two or more light sources connected in series
- H05B 47/24 Circuit arrangements for protecting against overvoltage
- H05B 47/25 Circuit arrangements for protecting against overcurrent
- H05B 47/26 Circuit arrangements for protecting against earth faults
- H05B 47/28 Circuit arrangements for protecting against abnormal temperature
- H05B 47/29 Circuits providing for substitution of the light source in case of its failure
Top Applicants
Top 10 applicants by patent filingsfor 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