A42B 3/28
Ventilating arrangements
Official title: Ventilating arrangements (A42B3/24 takes precedence)
A42B3/28 (Ventilating arrangements) appears on 721 US grants and 751 published applications in this corpus.
Search patents in A42B- Granted patents
- 721
- Published applications
- 751
- Assignees
- 315
- Inventors
- 1,246
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 8 | 0 |
| 1979 | 8 | 0 |
| 1980 | 5 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 5 | 0 |
| 1985 | 12 | 0 |
| 1986 | 9 | 0 |
| 1987 | 9 | 0 |
| 1988 | 10 | 0 |
| 1989 | 7 | 0 |
| 1990 | 9 | 0 |
| 1991 | 10 | 0 |
| 1992 | 17 | 0 |
| 1993 | 9 | 0 |
| 1994 | 8 | 0 |
| 1995 | 8 | 0 |
| 1996 | 7 | 0 |
| 1997 | 11 | 0 |
| 1998 | 11 | 0 |
| 1999 | 13 | 0 |
| 2000 | 13 | 0 |
| 2001 | 17 | 4 |
| 2002 | 10 | 9 |
| 2003 | 9 | 15 |
| 2004 | 18 | 20 |
| 2005 | 22 | 18 |
| 2006 | 10 | 26 |
| 2007 | 6 | 22 |
| 2008 | 4 | 13 |
| 2009 | 2 | 7 |
| 2010 | 17 | 15 |
| 2011 | 10 | 15 |
| 2012 | 15 | 9 |
| 2013 | 6 | 24 |
| 2014 | 7 | 13 |
| 2015 | 9 | 31 |
| 2016 | 19 | 46 |
| 2017 | 23 | 48 |
| 2018 | 24 | 56 |
| 2019 | 38 | 57 |
| 2020 | 52 | 46 |
| 2021 | 35 | 63 |
| 2022 | 41 | 51 |
| 2023 | 30 | 40 |
| 2024 | 31 | 29 |
| 2025 | 41 | 45 |
| 2026 | 30 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Personal protection system including medical garment with a shield6 Oct 2026US 12,751,515 B2Stryker Corporation
- Bayonet receiver for helmet6 Oct 2026US 12,751,516 B2LIFT Airborne Technologies LLC
- Hard hat with fan15 Sep 2026US 12,733,705 B2Milwaukee Electric Tool Corporation
- Hardhat with air conduit15 Sep 2026US 12,734,377 B23M Innovative Properties Company
- Reusable head gear with replaceable microfilter assemblies powered air circulation, earthing and communication protocol8 Sep 2026US 12,728,300 B2
- Helmet8 Oct 2026US 2026/0305751 A1Mips AB
- A hard hat with an integrated electronic subsystem24 Sep 2026US 2026/0283291 A1Xyz Reality Limited
- Helmet with internal ventilation system17 Sep 2026US 2026/0272099 A1Bell Sports, Inc.
- Enhanced spacesuits10 Sep 2026US 2026/0264894 A1Blue Collar Space Inc
- Helmet13 Aug 2026US 2026/0232062 A1George Tfe Scp
Most cited
By later US patents
- Multiple-effect respirator220US 4,549,542 A1985
- Hockey helmet191US 4,404,690 AAmer Sport International Inc. · 1983
- Protective helmet with face mask sealing means180US 4,713,844 AGentex Corporation · 1987
- Protective helmet with protective facepiece connection and adjustment provision166US 5,291,880 ACairns & Brother Inc. · 1994
- Personal air filtration and control system161US 5,054,480 ABio Medical Devices, Inc. · 1991