F24F 8/97
For removing tobacco smoke
Official title: for removing tobacco smoke
F24F8/97 (For removing tobacco smoke) appears on 43 US grants and 14 published applications in this corpus.
Search patents in F24F- Granted patents
- 43
- Published applications
- 14
- Assignees
- 22
- Inventors
- 84
- Latest grant
- 18 May 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 2 | 2 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 1 | 2 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 1 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
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- Method for decomposing nicotine22 Jun 2023US 2023/0194112 A1Ushio Denki Kabushiki Kaisha
- Collapsible Smoke Containment Apparatus25 Aug 2022US 2022/0268466 A1
- Cascadable air purifier5 Dec 2019US 2019/0368774 A1
- Graphene adsorbing material, preparation method therefor and application thereof, and cigarette filter tip and cigarette16 Aug 2018US 2018/0228209 A1Jinan Shengquan Group Share Holding Co., Ltd.
- Air purifier25 Aug 2016US 2016/0245543 A1Mitsubishi Electric Corporation
Most cited
By later US patents