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PCE
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DIFF Subgroup
H01H 37/36

actuated due to expansion or contraction of a fluid with or without vaporisation (the fluid forming a contact of the switch H01H29/04, H01H29/30)

Introduced: September 1968

Title

Titles differ between systems:

IPC: actuated due to expansion or contraction of a fluid with or without vaporisation

CPC: actuated due to expansion or contraction of a fluid with or without vaporisation (the fluid forming a contact of the switch H01H29/04, H01H29/30)

Full Title

Full titles differ between systems:

IPC:

Thermally-actuated switches > Details > Thermally-sensitive members > actuated due to expansion or contraction of a fluid with or without vaporisation

CPC:

Thermally-actuated switches > Details > Thermally-sensitive members > actuated due to expansion or contraction of a fluid with or without vaporisation (the fluid forming a contact of the switch H01H29/04, H01H29/30)

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

Child Classifications

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  • H01H 37/38 with bellows IPC+CPC Available in IPC and CPC
  • H01H 37/40 with diaphragm IPC+CPC Available in IPC and CPC
  • H01H 37/42 with curled flexible tube, e.g. Bourdon tube IPC+CPC Available in IPC and CPC
  • H01H 37/44 with piston and cylinder 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