A01F 12/44
Grain cleaners
Official title: Grain cleaners; Grain separators
A01F12/44 (Grain cleaners) appears on 537 US grants and 475 published applications in this corpus.
Search patents in A01F- Granted patents
- 537
- Published applications
- 475
- Assignees
- 105
- Inventors
- 751
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 5 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 10 | 0 |
| 1982 | 6 | 0 |
| 1983 | 6 | 0 |
| 1984 | 11 | 0 |
| 1985 | 10 | 0 |
| 1986 | 7 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 6 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 7 | 0 |
| 1996 | 7 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 1 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 4 |
| 2002 | 13 | 7 |
| 2003 | 8 | 4 |
| 2004 | 6 | 6 |
| 2005 | 6 | 8 |
| 2006 | 4 | 5 |
| 2007 | 2 | 4 |
| 2008 | 7 | 9 |
| 2009 | 4 | 11 |
| 2010 | 7 | 10 |
| 2011 | 10 | 2 |
| 2012 | 4 | 3 |
| 2013 | 2 | 10 |
| 2014 | 6 | 18 |
| 2015 | 16 | 16 |
| 2016 | 15 | 33 |
| 2017 | 25 | 50 |
| 2018 | 42 | 35 |
| 2019 | 46 | 63 |
| 2020 | 41 | 39 |
| 2021 | 23 | 20 |
| 2022 | 28 | 30 |
| 2023 | 14 | 20 |
| 2024 | 19 | 38 |
| 2025 | 30 | 19 |
| 2026 | 29 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fan assembly for a cleaning device of a combine harvester29 Sep 2026US 12,745,713 B2Deere & Company
- Overblown grain loss detection22 Sep 2026US 12,740,510 B2Deere & Company
- Grain processing apparatus of a combine harvester and controllable release passage therefor22 Sep 2026US 12,740,514 B2AGCO International GmbH
- Sensor arrangement for a combine harvester15 Sep 2026US 12,733,579 B2Deere & Company
- Weed seed destruction in a combine harvester a straw spreading section and a destructor housing which are coupled together to form a single unit8 Sep 2026US 12,727,534 B2Tritana Intellectual Property Ltd.
- Overblown grain loss detection1 Oct 2026US 2026/0293805 A1Deere & Company
- Grain Cleaning Apparatus for a Combine Harvester10 Sep 2026US 2026/0262574 A1
- Systems and methods for grain loss detection and analysis30 Jul 2026US 2026/0215366 A1Deere & Company
- Combine harvesters for use in harvesting corn, and related methods9 Jul 2026US 2026/0194459 A1Monsanto Technology LLC
- Sieve device for plansifters for fractionating ground cereal products25 Jun 2026US 2026/0175260 A1Swisca AG
Most cited
By later US patents
- Grain cleaner and destructor of foreign matter in harvesting crops88US 5,059,154 ABoard of Trustees of the University of Arkansas · 1991
- Combine harvester and associated method for gathering grain81US 9,011,222 B2Pioneer Hi-Bred International, Inc. · 2015
- Separating grate for a grain harvester64US 4,875,891 ADeere & Company · 1989
- Combine harvesters62US 4,259,829 ASperry Corporation · 1981
- Removable concaves for axial flow combines43US 6,485,364 B1New Holland North America, Inc. · 2002