A42C 5/04
Ventilating arrangements for head coverings
Official title: Ventilating arrangements for head coverings (for helmets A42B3/28)
A42C5/04 (Ventilating arrangements for head coverings) appears on 210 US grants and 150 published applications in this corpus.
Search patents in A42C- Granted patents
- 210
- Published applications
- 150
- Assignees
- 59
- Inventors
- 333
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 8 | 0 |
| 1998 | 9 | 0 |
| 1999 | 11 | 0 |
| 2000 | 10 | 0 |
| 2001 | 10 | 0 |
| 2002 | 8 | 11 |
| 2003 | 9 | 6 |
| 2004 | 7 | 11 |
| 2005 | 8 | 14 |
| 2006 | 7 | 12 |
| 2007 | 3 | 4 |
| 2008 | 3 | 2 |
| 2009 | 1 | 2 |
| 2010 | 4 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 2 |
| 2013 | 1 | 2 |
| 2014 | 0 | 1 |
| 2015 | 1 | 7 |
| 2016 | 4 | 5 |
| 2017 | 2 | 4 |
| 2018 | 5 | 8 |
| 2019 | 6 | 13 |
| 2020 | 6 | 8 |
| 2021 | 5 | 8 |
| 2022 | 8 | 8 |
| 2023 | 2 | 7 |
| 2024 | 7 | 2 |
| 2025 | 3 | 6 |
| 2026 | 4 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
Most cited
By later US patents
- Peltier-cooled garment128US 4,470,263 A1984
- Heating garment with pouch for accommodating inserted heating packets120US 5,605,144 AThermo-Cool Products Inc. · 1997
- Cap and vest garment components of an animate body heat exchanger93US 6,178,562 B2CoolSystems, Inc. · 2001
- Wearable, self-contained fully mobile personal breathing apparatus for surgeons and operating room personnel86US 4,019,508 AResearch Development Systems, Inc. · 1977
- Clean room helmet system82US 4,901,716 A1990