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DIFF Subgroup
H04N 9/26

using electron-optical colour selection means, e.g. line grid, deflection means in or near the gun or near the phosphor screen

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Details of colour television systems > Picture reproducers > using cathode ray tubes > using the same beam for more than one primary colour information > using electron-optical colour selection means, e.g. line grid, deflection means in or near the gun or near the phosphor screen

CPC:

Details of colour television systems > Picture reproducers (H04N9/11 takes precedence) > using cathode ray tubes (H04N9/11 takes precedence) > using the same beam for more than one primary colour information (H04N9/27 takes precedence) > using electron-optical colour selection means, e.g. line grid, deflection means in or near the gun or near the phosphor screen

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

Top Applicants

Top Applicants (IPC)

Class H04,2013–2023, worldwide · Source: EPO PATSTAT

  1. QUALCOMM US 97,396
  2. HUAWEI TECHNOLOGIES COMPANY CN 96,502
  3. SAMSUNG ELECTRONICS COMPANY KR 86,981
  4. TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 55,869
  5. HUAWEI TECHNOLOGIES COMPANY 55,349
  6. LG ELECTRONICS KR 53,649
  7. CANON 33,341
  8. SONY CORPORATION JP 32,761
  9. ZTE CORPORATION CN 32,274
  10. GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION 28,327

Top Applicants (CPC)

Class H04,2013–2023, worldwide · Source: EPO PATSTAT

  1. HUAWEI TECHNOLOGIES COMPANY CN 101,476
  2. QUALCOMM US 101,139
  3. SAMSUNG ELECTRONICS COMPANY KR 96,655
  4. TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 57,744
  5. LG ELECTRONICS KR 55,253
  6. HUAWEI TECHNOLOGIES COMPANY 54,181
  7. SONY CORPORATION JP 35,309
  8. ZTE CORPORATION CN 32,950
  9. INTEL CORPORATION US 27,533
  10. GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION CN 27,498