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PCE
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CPC Subgroup
H01K 9/02

to provide substitution in the event of failure of one of the bodies

Full Title

Lamps having two or more incandescent bodies separately heated (H01K11/00, H01K13/00 take precedence) > to provide substitution in the event of failure of one of the bodies

2 direct subcodes

Child Classifications

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  • H01K 9/04 with built-in manually operated switch
  • H01K 9/06 with built-in device, e.g. switch, for automatically completing circuit of reserve body

Top Applicants

Top 10 applicants by patent filingsfor class H01, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SAMSUNG ELECTRONICS COMPANY KR 37,897
  2. TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 36,116
  3. APPLIED MATERIALS US 21,640
  4. LG ENERGY SOLUTION KR 20,770
  5. LG CHEM KR 19,835
  6. TOKYO ELECTRON JP 18,519
  7. ROBERT BOSCH DE 14,595
  8. INTEL CORPORATION US 13,580
  9. MURATA MANUFACTURING COMPANY JP 12,151
  10. SAMSUNG SDI COMPANY KR 12,080