B01D 2259/4508
For cleaning air in buildings
Official title: for cleaning air in buildings
B01D2259/4508 (For cleaning air in buildings) appears on 632 US grants and 879 published applications in this corpus.
Search patents in B01D- Granted patents
- 632
- Published applications
- 879
- Assignees
- 471
- Inventors
- 1,733
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 6 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 7 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 2 |
| 2002 | 6 | 6 |
| 2003 | 4 | 3 |
| 2004 | 4 | 10 |
| 2005 | 7 | 11 |
| 2006 | 3 | 13 |
| 2007 | 4 | 11 |
| 2008 | 8 | 15 |
| 2009 | 6 | 16 |
| 2010 | 13 | 20 |
| 2011 | 8 | 28 |
| 2012 | 14 | 38 |
| 2013 | 19 | 30 |
| 2014 | 17 | 22 |
| 2015 | 31 | 49 |
| 2016 | 40 | 40 |
| 2017 | 30 | 44 |
| 2018 | 26 | 54 |
| 2019 | 45 | 79 |
| 2020 | 46 | 55 |
| 2021 | 41 | 80 |
| 2022 | 49 | 71 |
| 2023 | 54 | 73 |
| 2024 | 39 | 45 |
| 2025 | 53 | 42 |
| 2026 | 15 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dehumidification unit and desiccant drum therein29 Sep 2026US 12,747,872 B2Trane International Inc.
- System and method for heating and cooling an interior environment via pressure swing absorption16 Jun 2026US 12,654,123 B2Aeolus Works LLC
- Liquid desiccant air conditioner modules having interlocking panels for controlling airflow16 Jun 2026US 12,656,019 B2Copeland Corporation
- Method to select the smoke treating unit of a roasting apparatus2 Jun 2026US 12,642,282 B2Societe des Produits Nestle S. A.
- Adsorbent material for removing nitrogen oxides from indoor or cabin air2 Jun 2026US 12,643,068 B2BASF SE
- Filter system for the removal of volatile organosulfur compounds (voscs) from indoor air8 Oct 2026US 2026/0306980 A1Air Tech Group, SLU
- Removal of atmospheric pollutants from gas, related apparatus, processes and uses thereof24 Sep 2026US 2026/0284589 A1Intelligent Abatement, LLC
- Modular solid desiccant system for dedicated outdoor air system units10 Sep 2026US 2026/0266484 A1Carrier Corporation
- Ventilation device having oxygen-supplying function and ventilation method using same3 Sep 2026US 2026/0258962 A1LG Electronics Inc.
- Liquid water source collection apparatus, air conditioner, control method20 Aug 2026US 2026/0243464 A1Shenzhen Roborock Innovation Technology Co., Ltd.
Most cited
By later US patents
- Control system for air quality and temperature conditioning unit with high capacity filter bypass139US 5,590,830 AYork International Corporation · 1997
- Filter and method for removing mercury, bacteria, pathogens and other vapors from gas134US 4,917,862 A1990
- Sorbent system and method for absorbing carbon dioxide (CO2) from the atmosphere of a closed habitable environment129US 6,364,938 B1Hamilton Sundstrand Corporation · 2002
- Hypoxic room system and equipment for Hypoxic training and therapy at standard atmospheric pressure123US 5,799,652 AHypoxico Inc. · 1998
- Control system for air quality and temperature conditioning unit with high capacity filter bypass99US 5,564,626 AYork International Corporation · 1996