A01C 3/066
Spreading by using worm or screw conveyors
Official title: {Spreading by using worm or screw conveyors}
A01C3/066 (Spreading by using worm or screw conveyors) appears on 34 US grants and 16 published applications in this corpus.
Search patents in A01C- Granted patents
- 34
- Published applications
- 16
- Assignees
- 19
- Inventors
- 61
- Latest grant
- 30 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 0 | 0 |
| 1980 | 5 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 2 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 2 | 2 |
| 2020 | 2 | 3 |
| 2021 | 2 | 2 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Riding vehicle for distributing material30 Dec 2025US 12,507,613 B2
- Skid steer manure spreader attachment17 Jan 2023US 11,553,637 B2
- Push-off device and push-off vehicle comprising a push-off device23 Nov 2021US 11,180,066 B2Fliegl Agrartechnik GmbH
- Agricultural spreader and beater assembly therefore31 Aug 2021US 11,102,923 B2Jay-Lor International Inc.
- Manure spreader improvements1 Dec 2020US 10,849,265 B2Dutch Blacksmith Shop Ltd.
- Self-Loading Manure Spreader26 Oct 2023US 2023/0337572 A1
- Riding vehicle for distributing material30 Sep 2021US 2021/0298224 A1
- Skid steer manure spreader attachment28 Jan 2021US 2021/0022285 A1
- Push-off device and push-off vehicle comprising a push-off device9 Jul 2020US 2020/0215953 A1Fliegl Agrartechnik GmbH
- Manure spreader improvements5 Mar 2020US 2020/0068786 A1Dutch Blacksmith Shop Ltd.
Most cited
By later US patents
- All purpose V-shaped manure spreader23US 5,386,943 AH & S Manufacturing Co., Inc. · 1995
- Manure spreader with vertical expellers23US 5,501,404 AMeyer Manufacturing Company Limited · 1996
- Engaging and distributing paddle for a manure spreader12US 4,069,982 ASperry Rand Corporation · 1978
- Automatic hydraulic series-parallel shift device for implement12US 4,129,258 ADu-Al Manufacturing Company · 1978
- Material unloading implements11US 4,002,272 AMassey-Ferguson Services N.V. · 1977