IPC Main Group
A62D 9/00 Composition of chemical substances for use in breathing apparatus
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- HUMAN NECESSITIES
- Class:
- LIFE-SAVING; FIRE-FIGHTING
- Subclass:
- CHEMICAL MEANS FOR EXTINGUISHING FIRES; PROCESSES FOR MAKING HARMFUL CHEMICAL SUBSTANCES HARMLESS, OR LESS HARMFUL, BY EFFECTING A CHEMICAL CHANGE; COMPOSITION OF MATERIALS FOR COVERINGS OR CLOTHING FOR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; COMPOSITION OF MATERIALS FOR TRANSPARENT PARTS OF GAS-MASKS, RESPIRATORS, BREATHING BAGS OR HELMETS; COMPOSITION OF CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
Related Keywords
compositions used in BREATHING APPLIANCESair-purifying compositions used in GAS(ES) masks
Top Applicants
Top 10 applicants by patent filingsfor 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