B01D 2279/50
Filters adapted for separating dispersed particles from gases or vapours specially modified
Official title: for air conditioning
B01D2279/50 (Filters adapted for separating dispersed particles from gases or vapours specially modified) appears on 556 US grants and 720 published applications in this corpus.
Search patents in B01D- Granted patents
- 556
- Published applications
- 720
- Assignees
- 364
- Inventors
- 1,537
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 10 | 0 |
| 2000 | 17 | 0 |
| 2001 | 15 | 3 |
| 2002 | 14 | 10 |
| 2003 | 12 | 17 |
| 2004 | 12 | 18 |
| 2005 | 9 | 10 |
| 2006 | 7 | 17 |
| 2007 | 7 | 10 |
| 2008 | 7 | 4 |
| 2009 | 7 | 17 |
| 2010 | 6 | 17 |
| 2011 | 8 | 3 |
| 2012 | 5 | 5 |
| 2013 | 6 | 5 |
| 2014 | 5 | 4 |
| 2015 | 4 | 5 |
| 2016 | 5 | 7 |
| 2017 | 5 | 49 |
| 2018 | 21 | 23 |
| 2019 | 25 | 52 |
| 2020 | 37 | 69 |
| 2021 | 37 | 93 |
| 2022 | 63 | 86 |
| 2023 | 52 | 67 |
| 2024 | 43 | 46 |
| 2025 | 50 | 47 |
| 2026 | 26 | 36 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Portable breathing air filtering device and method6 Oct 2026US 12,752,231 B2King Abdullah University of Science and Technology
- Apparatus and method for an adjustable filter rack6 Oct 2026US 12,753,948 B2Midea Group Co., Ltd.
- Filter unit29 Sep 2026US 12,746,493 B2Samsung Biologics Co., Ltd.
- Filter systems for room air conditioners29 Sep 2026US 12,746,494 B2Rheem Manufacturing Company
- Indoor unit for air conditioner29 Sep 2026US 12,746,496 B2LG Electronics Inc.
- System and method for air decontamination24 Sep 2026US 2026/0284251 A1
- Substrate processing apparatus and substrate processing method17 Sep 2026US 2026/0275511 A1Wonik Ips Co., Ltd.
- Insertable media cleaner for hvac duct27 Aug 2026US 2026/0249219 A1Vibrant Building Technologies LLC
- Communicating filter plants27 Aug 2026US 2026/0249226 A1Kappa Filter Systems GmbH
- Mobile pcr systems, mobile reverse pcr hoods and related methods27 Aug 2026US 2026/0249283 A1Radeas, LLC
Most cited
By later US patents
- Room air treatment system175US 4,737,173 AAmway Corporation · 1988
- Detection of clogged filter in an HVAC system137US 6,993,414 B2Carrier Corporation · 2006
- High stiffness nonwoven filter medium121US 5,709,735 AKimberly-Clark Worldwide, Inc. · 1998
- Filtering apparatus for a forced air duct grill105US 5,525,145 A1996
- Two-stage air filter with multiple-layer stage and post-filter stage100US 6,156,089 AAir Kontrol, Inc. · 2000