A24D 3/166
Silicic acid or silicates
Official title: {Silicic acid or silicates}
A24D3/166 (Silicic acid or silicates) appears on 36 US grants and 45 published applications in this corpus.
Search patents in A24D- Granted patents
- 36
- Published applications
- 45
- Assignees
- 30
- Inventors
- 112
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 1 | 0 |
| 2004 | 1 | 2 |
| 2005 | 0 | 12 |
| 2006 | 0 | 5 |
| 2007 | 2 | 1 |
| 2008 | 1 | 0 |
| 2009 | 1 | 2 |
| 2010 | 2 | 3 |
| 2011 | 0 | 1 |
| 2012 | 0 | 2 |
| 2013 | 3 | 1 |
| 2014 | 1 | 0 |
| 2015 | 2 | 0 |
| 2016 | 1 | 3 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 3 | 2 |
| 2020 | 1 | 2 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 2 |
| 2026 | 1 | 3 |
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
- Multi-stage filtration device13 Oct 2020US 10,798,965 B2Banana Bros, LLC
- Cigar holder assembly for a smoke machine17 Sep 2019US 10,412,993 B2Altria Client Services LLC
- Adsorbent materials14 May 2019US 10,285,436 B2British American Tobacco (Investments) Limited
- Amphiphile-modified sorbents in smoking articles and filters29 Jan 2019US 10,188,142 B2Philip Morris USA Inc.
- Multi-filter device for hoffmann compounds in gaseous media10 Sep 2026US 2026/0262711 A1Compania Industrial De Tabacos Monte Paz S.A.
- Evaporator for extracting and filtering active substances from biological materials by heating6 Aug 2026US 2026/0223929 A1Bg Braingate Technology GmbH
- Filter and aerosol generating article including the filter4 Jun 2026US 2026/0150893 A1Kt&G Corporation
- Method and apparatus for conical smoking tips20 Nov 2025US 2025/0351867 A1
- Active paper9 Jan 2025US 2025/0009014 A1
Most cited
By later US patents
- Filters including segmented monolithic sorbent for gas-phase filtration54US 6,814,786 B1Philip Morris USA Inc. · 2004
- Cigarette filter47US 6,595,218 B1Philip Morris Incorporated · 2003
- Hydrophobic, crystalline, microporous silaceous materials of regular geometry43US 4,744,374 AThe Scopas Technology Company, Inc. · 1988
- Cigarette filter39US 6,209,547 B1Philip Morris Incorporated · 2001
- Filtered cigarette incorporating an adsorbent material36US 7,237,558 B2R. J. Reynolds Tobacco Company · 2007