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DIFF Subgroup
H05B 39/02

Switching on, e.g. with predetermined rate of increase of lighting current

Introduced: September 1968

Title

Titles differ between systems:

IPC: Switching-on, e.g. with predetermined rate of increase of lighting current

CPC: Switching on, e.g. with predetermined rate of increase of lighting current

Full Title

Full titles differ between systems:

IPC:

Circuit arrangements or apparatus for operating incandescent light sources > Switching-on, e.g. with predetermined rate of increase of lighting current

CPC:

Circuit arrangements or apparatus for operating incandescent light sources (structurally associated with the incandescent lamps H01K1/62) > Switching on, e.g. with predetermined rate of increase of lighting current

No child classifications to compare. This is a leaf node in both IPC and CPC.

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

Class H05,2013–2023, worldwide · Source: EPO PATSTAT

  1. SAMSUNG ELECTRONICS COMPANY KR 9,981
  2. SAMSUNG DISPLAY KR 5,041
  3. LG ELECTRONICS KR 4,742
  4. PHILIP MORRIS PRODUCTS CH 4,411
  5. PANASONIC INTELLECTUAL PROPERTY JP 3,915
  6. PANASONIC INTELLECTUAL PROPERTY 3,471
  7. SAMSUNG ELECTRO-MECHANICS COMPANY KR 3,210
  8. MURATA MANUFACTURING COMPANY JP 3,191
  9. FUJI JP 2,987
  10. SIGNIFY HOLDING NL 2,907