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PCE
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DIFF Main Group
A62C 4/00

Flame traps allowing passage of gas but not of flame or explosion wave

Introduced: July 1974

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1974.

Child Classifications

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  • A62C 4/02 in gas-pipes (safety valves F16K17/00) since 1974 IPC+CPC Available in IPC and CPC
  • A62C 4/04 in flues or chimneys since 1974 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class A62,2013–2023, worldwide · Source: EPO PATSTAT

  1. SGCC(STATE GRID CORPORATION OF CHINA) 1,604
  2. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 1,202
  3. TYCO FIRE PRODUCTS US 906
  4. NOHMI BOSAI 429
  5. LG ENERGY SOLUTION KR 414
  6. HOCHIKI CORPORATION 408
  7. HUBEI JI'ANDUN FIRE-FIGHTING TECHNOLOGY COMPANY 374
  8. HONEYWELL INTERNATIONAL US 355
  9. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 346
  10. FISHER AND PAYKEL HEALTHCARE NZ 305

Top Applicants (CPC)

Class A62,2013–2023, worldwide · Source: EPO PATSTAT

  1. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 1,384
  2. TYCO FIRE PRODUCTS US 962
  3. SGCC(STATE GRID CORPORATION OF CHINA) 662
  4. LG ENERGY SOLUTION KR 519
  5. HONEYWELL INTERNATIONAL US 427
  6. DRAEGER SAFETY AG & CO. KGAA DE 332
  7. VICTAULIC COMPANY US 294
  8. HILTI LI 265
  9. KIDDE TECHNOLOGIES US 245
  10. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) 240