A01F 12/30
Straw separators , i.e. straw walkers, for separating residual grain from the
Official title: Straw separators {, i.e. straw walkers, for separating residual grain from the straw (grain cleaning A01F12/44)}
A01F12/30 (Straw separators , i.e. straw walkers, for separating residual grain from the) appears on 90 US grants and 84 published applications in this corpus.
Search patents in A01F- Granted patents
- 90
- Published applications
- 84
- Assignees
- 28
- Inventors
- 205
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 2 |
| 2009 | 2 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 1 |
| 2013 | 3 | 1 |
| 2014 | 2 | 8 |
| 2015 | 4 | 8 |
| 2016 | 5 | 5 |
| 2017 | 7 | 9 |
| 2018 | 4 | 3 |
| 2019 | 7 | 14 |
| 2020 | 7 | 7 |
| 2021 | 9 | 7 |
| 2022 | 6 | 5 |
| 2023 | 1 | 2 |
| 2024 | 4 | 5 |
| 2025 | 2 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- A01F 12/32With shaker screens or sieves30
- A01F 12/305Combined with additional grain extracting means14
- A01F 12/39With straw carriers in the form of rotors or drums14
- A01F 12/38With juxtaposed and independently-moved shaker bars or the like3
- A01F 12/385With endless straw-conveying surface3
- A01F 12/395Conical or cylindrical straw separators with internal working surface2
Recent patents
- Variable speed drive for chaff mill of combine harvester6 Oct 2026US 12,751,372 B2CNH Industrial America LLC
- Sieve for an agricultural harvester including extruded sides with polymeric strips23 Sep 2025US 12,419,221 B2CNH Industrial America LLC
- Threshing beds and concave for an agricultural combine formed therewith20 May 2025US 12,302,795 B2
- Procedure for collection and processing of weed seeds and product obtained23 Jul 2024US 12,041,925 B2
- Grain separating apparatus for a combine harvester and a method for separating grain from straw material4 Jun 2024US 11,997,953 B2Jakob Sørensen IP APS
- Separating System of a Combine Harvester with a Crop Flow Vane9 Oct 2025US 2025/0311676 A1AGCO Corporation
- Variable speed drive for chaff mill of combine harvester24 Jul 2025US 2025/0234810 A1CNH Industrial America LLC
- Threshing beds and concave for an agricultural combine formed therewith8 May 2025US 2025/0143223 A1
- Combine15 Aug 2024US 2024/0268271 A1Kubota Corporation
- Threshing beds and concave for an agricultural combine formed therewith9 May 2024US 2024/0147912 A1
Most cited
By later US patents
- Harvesting machines19US 3,946,746 AClayson N. V. · 1976
- Grain saving apparatus19US 3,983,883 AMassey-Ferguson Industries Limited · 1976
- Dual action corn cob separation and improved chaffer for whole corn cobs19US 7,566,266 B1CNH America LLC · 2009
- Harvester thresher with chopper17US 5,021,028 AClaas OHG · 1991
- Belted grain accelerator for a threshing machine15US 4,821,744 ADeere & Company · 1989