A24B 3/18
Preparing tobacco in the factory: other treatment of leaves
Official title: Other treatment of leaves, e.g. puffing, crimpling, cleaning
A24B3/18 (Preparing tobacco in the factory: other treatment of leaves) appears on 232 US grants and 100 published applications in this corpus.
Search patents in A24B- Granted patents
- 232
- Published applications
- 100
- Assignees
- 79
- Inventors
- 440
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 6 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 14 | 0 |
| 1982 | 12 | 0 |
| 1983 | 7 | 0 |
| 1984 | 10 | 0 |
| 1985 | 10 | 0 |
| 1986 | 7 | 0 |
| 1987 | 10 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 8 | 0 |
| 1991 | 8 | 0 |
| 1992 | 9 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 10 | 0 |
| 1998 | 8 | 0 |
| 1999 | 7 | 0 |
| 2000 | 7 | 0 |
| 2001 | 6 | 3 |
| 2002 | 2 | 3 |
| 2003 | 5 | 5 |
| 2004 | 4 | 6 |
| 2005 | 0 | 2 |
| 2006 | 1 | 1 |
| 2007 | 0 | 2 |
| 2008 | 3 | 2 |
| 2009 | 1 | 2 |
| 2010 | 0 | 3 |
| 2011 | 2 | 3 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 4 | 5 |
| 2015 | 2 | 2 |
| 2016 | 1 | 5 |
| 2017 | 1 | 4 |
| 2018 | 2 | 2 |
| 2019 | 5 | 7 |
| 2020 | 5 | 5 |
| 2021 | 2 | 7 |
| 2022 | 2 | 6 |
| 2023 | 3 | 5 |
| 2024 | 3 | 8 |
| 2025 | 3 | 5 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of processing tobacco fines into a non-continuous tobacco material18 Aug 2026US 12,708,134 B2Nicoventures Trading Limited
- Device and method for reducing combustion cone fallout propensity and stabilizing loss of tobacco from cigarette ends9 Jun 2026US 12,648,586 B2Zhangjiakou Cigarette Factory Co., Ltd.
- Control system and control method for pest killing by microwave and computer device and storage medium thereof2 Jun 2026US 12,642,263 B2Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China
- Method and system to monitor tobacco material to detect insect infestation10 Feb 2026US 12,543,773 B2Philip Morris Products S. A.
- Vessel screen retaining system and method6 May 2025US 12,290,094 B2Philip Morris USA Inc.
- Tobacco treatment1 Oct 2026US 2026/0293960 A1British American Tobacco Exports Limited
- Tobacco treatment30 Jul 2026US 2026/0215475 A1Nicoventures Trading Limited
- Tobacco Product and a Method of Manufacture Thereof30 Jul 2026US 2026/0215481 A1JT International SA
- Forming of aerosol generating substrate in between conveyor surfaces2 Jul 2026US 2026/0182622 A1Philip Morris Products S. A.
- Method for producing a plant-based sheet26 Feb 2026US 2026/0053179 A1Philip Morris Products S. A.
Most cited
By later US patents
- Process and apparatus for impregnation and expansion of tobacco169US 5,649,552 APhilip Morris Incorporated · 1997
- Conditioning cylinder with flights, backmixing baffles, conditioning nozzles and air recirculation128US 5,103,842 APhilip Morris Incorporated · 1992
- Process for expanding tobacco113US 6,125,855 AImperial Tobacco Limited · 2000
- Tobacco extractor58US 4,448,208 APhilip Morris Incorporated · 1984
- Method of treating tobacco to reduce nitrosamine content, and products produced thereby55US 6,202,649 B1Regent Court Technologies · 2001