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IPC Subgroup
H05B 45/3574

Emulating the electrical or functional characteristics of incandescent lamps

Introduced: January 2020

Full Title

Circuit arrangements for operating light-emitting diodes [LED] > Driver circuits > specially adapted for retrofit LED light sources > Emulating the electrical or functional characteristics of incandescent lamps

Classification Context

Section:
ELECTRICITY
Class:
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Subclass:
ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL

2 direct subcodes

Child Classifications

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  • H05B 45/3575 by means of dummy loads or bleeder circuits, e.g. for dimmers
  • H05B 45/3577 Emulating the dimming characteristics, brightness or colour temperature of incandescent lamps

Top Applicants

Top 10 applicants by patent filingsfor class H05, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SAMSUNG ELECTRONICS COMPANY KR 7,201
  2. PANASONIC INTELLECTUAL PROPERTY 6,828
  3. SEMICONDUCTOR ENERGY LABORATORY COMPANY 3,988
  4. LG ELECTRONICS KR 3,564
  5. PANASONIC INTELLECTUAL PROPERTY JP 3,533
  6. SAMSUNG DISPLAY KR 3,310
  7. FUJI JP 2,870
  8. SAMSUNG ELECTRO-MECHANICS COMPANY KR 2,675
  9. GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION 2,665
  10. MURATA MANUFACTURING COMPANY JP 2,634