IPC Subgroup
A42B 3/28 Ventilating arrangements
Introduced: January 1990
Last revised: January 2006
Full Title
Helmets; Helmet covers > Parts, details or accessories of helmets > Ventilating arrangements
Classification Context
- Section:
- HUMAN NECESSITIES
- Class:
- HEADWEAR
- Subclass:
- HATS; HEAD COVERINGS
Related Keywords
VENTILATION of helmets
Top Applicants
Top 10 applicants by patent filingsfor class A42, 2013–2023, worldwide · Source: EPO PATSTAT
- SGCC(STATE GRID CORPORATION OF CHINA) 411
- BELL SPORTS US 256
- MIPS SE 221
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 148
- GENTEX CORPORATION US 129
- KASK IT 122
- PFANNER SCHUTZBEKLEIDUNG AT 114
- GUANGDONG POWER GRID CORPORATION 107
- GU ZHENGHUI 88
- MILWAUKEE ELECTRIC TOOL CORPORATION US 82