A24D 3/163
Carbon
Official title: {Carbon}
A24D3/163 (Carbon) appears on 136 US grants and 212 published applications in this corpus.
Search patents in A24D- Granted patents
- 136
- Published applications
- 212
- Assignees
- 66
- Inventors
- 422
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 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 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 1 | 9 |
| 2004 | 4 | 10 |
| 2005 | 3 | 11 |
| 2006 | 1 | 17 |
| 2007 | 4 | 16 |
| 2008 | 2 | 9 |
| 2009 | 4 | 9 |
| 2010 | 9 | 9 |
| 2011 | 7 | 8 |
| 2012 | 6 | 7 |
| 2013 | 10 | 8 |
| 2014 | 4 | 8 |
| 2015 | 3 | 5 |
| 2016 | 6 | 9 |
| 2017 | 7 | 5 |
| 2018 | 4 | 9 |
| 2019 | 6 | 8 |
| 2020 | 8 | 5 |
| 2021 | 5 | 8 |
| 2022 | 5 | 11 |
| 2023 | 5 | 3 |
| 2024 | 4 | 11 |
| 2025 | 2 | 8 |
| 2026 | 3 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Harm-reducing cigarette filter, preparation method and application thereof9 Jun 2026US 12,648,590 B2Changde Jizhi Biological Technology Co., Ltd
- Paper tube for smoking articles with flavored sheet, and smoking article31 Mar 2026US 12,588,701 B2Kt&G Corporation
- Device for filtering smoke17 Mar 2026US 12,575,600 B2
- Cigarettes and filter subassemblies with squeezable flavor capsules and methods of manufacture30 Sep 2025US 12,426,623 B2Philip Morris USA Inc.
- Filtering material and filter for retaining polyaromatic hydrocarbons, carbonyls and other compounds from smoke from tobacco products18 Mar 2025US 12,252,403 B2Compania Industrial De Tabacos Monte Paz S.A.
- Filter element for a water pipe8 Oct 2026US 2026/0305690 A1
- Multi-filter device for hoffmann compounds in gaseous media10 Sep 2026US 2026/0262711 A1Compania Industrial De Tabacos Monte Paz S.A.
- Rod filters having high hardness values27 Aug 2026US 2026/0248178 A1Eastman Chemical Company
- Non-combustion type flavor inhalation article20 Aug 2026US 2026/0240229 A1Japan Tobacco Inc.
- Flavor-generating article25 Jun 2026US 2026/0174126 A1Japan Tobacco 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 filter115US 5,568,819 AR. J. Reynolds Tobacco Company · 1996
- Thermally insulative smoking article filter components111US 7,878,209 B2Philip Morris USA Inc. · 2011
- Cigarette and filter with downstream flavor addition108US 6,761,174 B2Philip Morris Incorporated · 2004