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DIFF Subgroup
H01H 33/55

Oil reservoirs or tanks; Lowering means therefor (associated with withdrawal mechanism for isolation of switch H02B11/08)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Oil reservoirs or tanks; Lowering means therefor

CPC: Oil reservoirs or tanks; Lowering means therefor (associated with withdrawal mechanism for isolation of switch H02B11/08)

Full Title

Full titles differ between systems:

IPC:

High-tension or heavy-current switches with arc-extinguishing or arc-preventing means > Details > Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices > Oil reservoirs or tanks; Lowering means therefor

CPC:

High-tension or heavy-current switches with arc-extinguishing or arc-preventing means > Details > Cases (for switchgear H02B1/26); Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices > Oil reservoirs or tanks; Lowering means therefor (associated with withdrawal mechanism for isolation of switch H02B11/08)

Of 1 combined children, 0 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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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