A01F 12/20
Threshing cylinders with ribs
A01F12/20 (Threshing cylinders with ribs) appears on 43 US grants and 39 published applications in this corpus.
Search patents in A01F- Granted patents
- 43
- Published applications
- 39
- Assignees
- 17
- Inventors
- 82
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 2 | 0 |
| 2013 | 3 | 3 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 1 | 2 |
| 2017 | 2 | 4 |
| 2018 | 3 | 5 |
| 2019 | 4 | 4 |
| 2020 | 3 | 1 |
| 2021 | 1 | 3 |
| 2022 | 3 | 1 |
| 2023 | 0 | 3 |
| 2024 | 4 | 4 |
| 2025 | 3 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rasp bar configuration for an agricultural implement16 Jun 2026US 12,653,107 B2CNH Industrial Belgium N. V.
- Threshing spine18 Nov 2025US 12,471,534 B2Deere & Company
- Threshing and separation method to separate grains from material other than grain via threshing and separating apparatuses8 Jul 2025US 12,349,632 B2Calmer Holding Company, LLC
- Combine with threshing chamber defined by distinct sequences of concaves11 Feb 2025US 12,219,901 B2Calmer Holding Company, LLC
- Methods and systems for threshing/separating grains and legumes utilizing concaves1 Oct 2024US 12,102,041 B2Calmer Holding Company, LLC
- Simplified combine harvester18 Jun 2026US 2026/0165254 A1
- Combine with threshing chamber defined by distinct sequences of concaves1 May 2025US 2025/0134001 A1Calmer Holding Company, LLC
- Combine with threshing chamber defined by distinct sequences of concaves12 Dec 2024US 2024/0407299 A1Calmer Holding Company, LLC
- Threshing spine30 May 2024US 2024/0172594 A1Deere & Company
- Threshing grains and legumes utilizing concaves with adjustable openings28 Mar 2024US 2024/0099198 A1Calmer Holding Company, LLC
Most cited
By later US patents
- Helical element rotor-axial flow combine36US 3,982,549 AInternational Harvester Company · 1976
- Rotating cylinder with flat filler plates for use with tapered concave in combine27US 6,074,297 A2000
- Rasp bar threshing element and assembly24US 6,264,553 B1Case Corporation · 2001
- Cylinder for combine22US 4,796,645 A1989
- Axial flow combine having concave relief21US 3,995,645 ASperry Rand Corporation · 1976