A24D 3/12
Of ion exchange materials
Official title: of ion exchange materials
A24D3/12 (Of ion exchange materials) appears on 26 US grants and 43 published applications in this corpus.
Search patents in A24D- Granted patents
- 26
- Published applications
- 43
- Assignees
- 20
- Inventors
- 78
- Latest grant
- 7 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 4 |
| 2004 | 2 | 3 |
| 2005 | 0 | 3 |
| 2006 | 0 | 3 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 3 |
| 2012 | 1 | 2 |
| 2013 | 2 | 2 |
| 2014 | 1 | 4 |
| 2015 | 2 | 3 |
| 2016 | 2 | 2 |
| 2017 | 0 | 4 |
| 2018 | 1 | 1 |
| 2019 | 4 | 3 |
| 2020 | 1 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 1 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Tobacco blend7 Jan 2025US 12,185,749 B2Nicoventures Trading Limited
- Tobacco blend8 Oct 2024US 12,108,779 B2Nicoventures Trading Limited
- Smoking article filter and method of manufacturing the same14 Feb 2023US 11,576,428 B2Japan Tobacco Inc.
- Additive releasing materials2 Nov 2021US 11,160,305 B2British American Tobacco (Investments) Limited
- Fibrous filtration material for electronic smoking article16 Jun 2020US 10,681,937 B2RAI Strategic Holdings, Inc.
- Smoking article filter and method of manufacturing the same9 Apr 2020US 2020/0107574 A1Japan Tobacco Inc.
- Tobacco blend28 Nov 2019US 2019/0357590 A1Nicoventures Trading Limited
- Fibrous filtration material for electronic smoking article24 Oct 2019US 2019/0320723 A1RAI Strategic Holdings, Inc.
- Tobacco blend26 Sep 2019US 2019/0289901 A1Nicoventures Trading Limited
- Fibrous filtration material for electronic smoking article13 Dec 2018US 2018/0352856 A1RAI Strategic Holdings, Inc.
Most cited
By later US patents
- Smoking articles and smokable filler materials therefor58US 8,375,959 B2British American Tobacco (Investments) Limited · 2013
- Tobacco smoke filter for smoking device with porous mass of active particulate33US 9,386,803 B2Celanese Acetate LLC · 2016
- Tobacco filter and fibrous ion exchange resin29US 4,700,723 AToray Industries, Inc. · 1987
- Cigarette filter26US 6,779,529 B2Brown & Williamson Tobacco Corporation · 2004
- Smoking system to filter tobacco smoke18US 4,226,250 APeterson Labs., Inc. · 1980