DIFF Subgroup
A62C 2/12 Hinged dampers
Introduced: January 1990
Full Title
Full titles differ between systems:
IPC:
Fire prevention or containment > Physical fire-barriers > Hinged dampers
CPC:
Fire prevention or containment (A62C3/00 takes precedence; flame traps A62C4/00) > Physical fire-barriers > Hinged dampers
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1990.
Child Classifications
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Top Applicants
Top Applicants (IPC)
Class A62,2013–2023, worldwide · Source: EPO PATSTAT
- SGCC(STATE GRID CORPORATION OF CHINA) 1,604
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 1,202
- TYCO FIRE PRODUCTS US 906
- NOHMI BOSAI 429
- LG ENERGY SOLUTION KR 414
- HOCHIKI CORPORATION 408
- HUBEI JI'ANDUN FIRE-FIGHTING TECHNOLOGY COMPANY 374
- HONEYWELL INTERNATIONAL US 355
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 346
- FISHER AND PAYKEL HEALTHCARE NZ 305
Top Applicants (CPC)
Class A62,2013–2023, worldwide · Source: EPO PATSTAT
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 1,384
- TYCO FIRE PRODUCTS US 962
- SGCC(STATE GRID CORPORATION OF CHINA) 662
- LG ENERGY SOLUTION KR 519
- HONEYWELL INTERNATIONAL US 427
- DRAEGER SAFETY AG & CO. KGAA DE 332
- VICTAULIC COMPANY US 294
- HILTI LI 265
- KIDDE TECHNOLOGIES US 245
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) 240