A24D 3/0212
Applying additives to filter materials
Official title: {Applying additives to filter materials}
A24D3/0212 (Applying additives to filter materials) appears on 271 US grants and 357 published applications in this corpus.
Search patents in A24D- Granted patents
- 271
- Published applications
- 357
- Assignees
- 85
- Inventors
- 620
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 6 | 0 |
| 1981 | 4 | 0 |
| 1982 | 5 | 0 |
| 1983 | 6 | 0 |
| 1984 | 2 | 0 |
| 1985 | 6 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 3 |
| 2003 | 3 | 9 |
| 2004 | 4 | 7 |
| 2005 | 3 | 10 |
| 2006 | 4 | 10 |
| 2007 | 1 | 6 |
| 2008 | 2 | 17 |
| 2009 | 5 | 14 |
| 2010 | 10 | 11 |
| 2011 | 10 | 12 |
| 2012 | 13 | 20 |
| 2013 | 13 | 16 |
| 2014 | 7 | 19 |
| 2015 | 14 | 15 |
| 2016 | 10 | 10 |
| 2017 | 7 | 9 |
| 2018 | 9 | 12 |
| 2019 | 12 | 17 |
| 2020 | 13 | 20 |
| 2021 | 7 | 15 |
| 2022 | 15 | 17 |
| 2023 | 9 | 29 |
| 2024 | 13 | 27 |
| 2025 | 12 | 24 |
| 2026 | 9 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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
- Firm filter for aerosol-generating article7 Jul 2026US 12,672,671 B2Philip Morris Products S. A.
- Method and apparatus for manufacturing flavor capsule of tobacco23 Jun 2026US 12,660,848 B2Kt&G Corporation
- Member for flavor inhalation article, flavor inhalation article, phenol scavenger for flavor inhalation article, and method for producing flavor inhalation article7 Apr 2026US 12,593,865 B2Japan Tobacco Inc.
- Aerosol-generating article comprising hollow tubular element with capsule and ventilation13 Aug 2026US 2026/0232012 A1Philip Morris Products S. A.
- Filter for smoking article having lyocell tow, manufacturing method thereof, and smoking article having the same30 Jul 2026US 2026/0215494 A1Kolon Industries, Inc.
- Smoking tip with selectively infused flavor chamber16 Jul 2026US 2026/0198557 A1
- Member for flavor inhalation article, flavor inhalation article, phenol scavenger for flavor inhalation article, and method for producing flavor inhalation article9 Jul 2026US 2026/0191254 A1Japan Tobacco Inc.
- Paper sheet filter element for a smoking article, and associated method18 Jun 2026US 2026/0165366 A1R. J. Reynolds Tobacco Company
Most cited
By later US patents
- Production of tobacco smoke filters149US 4,281,671 AAmerican Filtrona Corporation · 1981
- Biodegradable polyvinyl alcohol tobacco smoke filters, tobacco smoke products incorporating such filters, and methods and apparatus for making same134US 5,911,224 AFiltrona International Limited · 1999
- Rods containing pelletized material109US 4,862,905 AR. J. Reynolds Tobacco Company · 1989
- Method and apparatus for incorporating objects into cigarette filters103US 7,115,085 B2R. J. Reynolds Tobacco Company · 2006
- Menthol cigarette99US 8,157,918 B2Philip Morris USA Inc. · 2012