A24D 3/04
Tobacco smoke filters characterised by their shape or structure
A24D3/04 (Tobacco smoke filters characterised by their shape or structure) appears on 745 US grants and 984 published applications in this corpus.
Search patents in A24D- Granted patents
- 745
- Published applications
- 984
- Assignees
- 207
- Inventors
- 1,541
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 5 | 0 |
| 1978 | 7 | 0 |
| 1979 | 4 | 0 |
| 1980 | 7 | 0 |
| 1981 | 14 | 0 |
| 1982 | 13 | 0 |
| 1983 | 13 | 0 |
| 1984 | 17 | 0 |
| 1985 | 26 | 0 |
| 1986 | 29 | 0 |
| 1987 | 34 | 0 |
| 1988 | 16 | 0 |
| 1989 | 12 | 0 |
| 1990 | 10 | 0 |
| 1991 | 7 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 13 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 9 | 0 |
| 1999 | 7 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 0 |
| 2002 | 4 | 4 |
| 2003 | 4 | 4 |
| 2004 | 7 | 14 |
| 2005 | 1 | 11 |
| 2006 | 1 | 12 |
| 2007 | 5 | 17 |
| 2008 | 2 | 23 |
| 2009 | 2 | 12 |
| 2010 | 10 | 13 |
| 2011 | 12 | 29 |
| 2012 | 9 | 24 |
| 2013 | 22 | 23 |
| 2014 | 14 | 48 |
| 2015 | 20 | 59 |
| 2016 | 15 | 27 |
| 2017 | 23 | 33 |
| 2018 | 22 | 48 |
| 2019 | 35 | 42 |
| 2020 | 30 | 65 |
| 2021 | 33 | 63 |
| 2022 | 35 | 63 |
| 2023 | 35 | 95 |
| 2024 | 51 | 112 |
| 2025 | 36 | 72 |
| 2026 | 35 | 71 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Manufacture of gas emission medium for enhancing migration amount of active ingredients15 Sep 2026US 12,733,671 B2Kt&G Corporation
- Radially firm smoking article filter15 Sep 2026US 12,733,676 B2Philip Morris Products S. A.
- Article for use in a non-combustible aerosol provision system25 Aug 2026US 12,714,138 B2Nicoventures Trading Limited
- Article for use in an aerosol provision system18 Aug 2026US 12,708,138 B2Nicoventures Trading Limited
- Smoking article and method for a cigar or cigarillo using optional second filter and slidable sleeve11 Aug 2026US 12,702,152 B1IP Trademark Holdings, Inc.
- Smoking article and method for producing smoking article8 Oct 2026US 2026/0305685 A1Japan Tobacco Inc.
- Aerosol provision system8 Oct 2026US 2026/0305687 A1Nicoventures Trading Limited
- Filter element for a water pipe8 Oct 2026US 2026/0305690 A1
- Filter element for cigarettes1 Oct 2026US 2026/0293973 A1
- Eco-friendly filter for smoking article having disintegrability1 Oct 2026US 2026/0293974 A1Kolon Industries, Inc.
Most cited
By later US patents
- Cigarette filter308US 5,360,023 AR. J. Reynolds Tobacco Company · 1994
- Cigarette223US 5,271,419 AR. J. Reynolds Tobacco Company · 1993
- Cigarette filters containing strands of tobacco-containing materials158US 5,025,814 AR. J. Reynolds Tobacco Company · 1991
- Disposable flavored filter for cigarettes137US 5,724,997 AR. J. Reynolds Tobacco Company · 1998
- Filter plug125US 4,488,563 AMitsubishi Acetate Co., Ltd. · 1984