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DIFF Main Group
H01K 1/00

Details

Introduced: September 1968

IPC and CPC are identically structured here. All 13 subcodes exist in both systems.

2 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • H01K 1/26 Screens; Filters (associated with envelope H01K1/28) IPC+CPC Available in IPC and CPC
  • H01K 1/36 Seals between parts of vessel, e.g. between stem and envelope IPC+CPC Available in IPC and CPC
  • H01K 1/38 Seals for leading-in conductors IPC+CPC Available in IPC and CPC
  • H01K 1/40 Leading-in conductors IPC+CPC Available in IPC and CPC
  • H01K 1/50 Selection of substances for gas fillings; Specified pressure thereof IPC+CPC Available in IPC and CPC
  • H01K 1/58 Cooling arrangements IPC+CPC Available in IPC and CPC
  • H01K 1/60 Means structurally associated with the lamp for indicating defects or previous use IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class H01,2013–2023, worldwide · Source: EPO PATSTAT

  1. TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 43,574
  2. SAMSUNG ELECTRONICS COMPANY KR 42,206
  3. LG CHEM KR 21,383
  4. APPLIED MATERIALS US 20,441
  5. LG ENERGY SOLUTION KR 20,279
  6. SAMSUNG DISPLAY KR 19,725
  7. CHINESE ACADEMY OF SCIENCES 19,400
  8. TOYOTA MOTOR CORPORATION 18,819
  9. SGCC(STATE GRID CORPORATION OF CHINA) 18,082
  10. TOKYO ELECTRON JP 17,634

Top Applicants (CPC)

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