B60H 2003/0683
The quality of the filter or the air being checked
Official title: {the quality of the filter or the air being checked}
B60H2003/0683 (The quality of the filter or the air being checked) appears on 81 US grants and 98 published applications in this corpus.
Search patents in B60H- Granted patents
- 81
- Published applications
- 98
- Assignees
- 62
- Inventors
- 269
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 2 | 3 |
| 2005 | 1 | 1 |
| 2006 | 3 | 2 |
| 2007 | 0 | 4 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 2 |
| 2012 | 1 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 2 | 2 |
| 2016 | 1 | 4 |
| 2017 | 2 | 7 |
| 2018 | 3 | 9 |
| 2019 | 8 | 8 |
| 2020 | 5 | 7 |
| 2021 | 6 | 9 |
| 2022 | 7 | 10 |
| 2023 | 9 | 7 |
| 2024 | 7 | 8 |
| 2025 | 4 | 6 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Device for detecting a filter loading17 Feb 2026US 12,551,833 B2Ford Global Technologies, LLC
- Method of preventing air pollution in vehicle21 Oct 2025US 12,447,803 B2Microjet Technology Co., Ltd.
- Cabin filter state handler14 Oct 2025US 12,444,250 B2Volvo Car Corporation
- System for treating the air in the cabin of a vehicle via an air filter with an RFID tag8 Jul 2025US 12,351,004 B2Denso Thermal Systems S.P.A.
- Air filter monitoring system and method for a work machine10 Jun 2025US 12,325,290 B2Deere & Company
- Method to forecast filter congestion status18 Jun 2026US 2026/0170889 A1Fca US LLC
- System and method for monitoring a filter state of a hvac system in a vehicle11 Jun 2026US 2026/0158852 A1Hyundai Motor Company
- System for measuring odor from air conditioner of vehicle and method for measuring odor from air conditioner using same12 Feb 2026US 2026/0042334 A1Hyundai Motor Company
- Direct air capture system20 Nov 2025US 2025/0353358 A1Planetwest LLC
- System For and Method of Alerting About Cleaning of Air Purifier14 Aug 2025US 2025/0256552 A1Hyundai Motor Company
Most cited
By later US patents
- Optical sensor device431US 5,844,682 AOMRON Corporation · 1998
- Filter clog detection and notification system259US 9,183,723 B2Cleanalert, LLC · 2015
- Air filter gauge172US 6,190,442 B1Tishken Products Co. · 2001
- Multiple filter unit62US 4,629,479 AItal Idee s.r.l. · 1986
- Automotive by-pass air cleaning and particulate motor vehicle interior air quality system35US 5,954,577 A1999