A01F 15/042
Plungers
Official title: {Plungers}
A01F15/042 (Plungers) appears on 156 US grants and 162 published applications in this corpus.
Search patents in A01F- Granted patents
- 156
- Published applications
- 162
- Assignees
- 25
- Inventors
- 160
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 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 | 1 | 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 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 3 |
| 2004 | 2 | 0 |
| 2005 | 0 | 3 |
| 2006 | 2 | 1 |
| 2007 | 1 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 2 |
| 2011 | 2 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 2 | 12 |
| 2016 | 7 | 25 |
| 2017 | 14 | 23 |
| 2018 | 20 | 25 |
| 2019 | 23 | 9 |
| 2020 | 19 | 19 |
| 2021 | 15 | 15 |
| 2022 | 5 | 3 |
| 2023 | 8 | 7 |
| 2024 | 14 | 7 |
| 2025 | 6 | 2 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Square baler implement with two speed drivetrain28 Jul 2026US 12,690,524 B2Deere & Company
- Agricultural baler with flake prediction for bale length control7 Jul 2026US 12,674,654 B2CNH Industrial America LLC
- Square baler23 Jun 2026US 12,660,760 B2Kuhn-Geldrop BV
- Gear assembly for a square baler12 May 2026US 12,622,360 B2Usines CLAAS France S.A.S
- Gear assembly for driving a ram of a square baler3 Feb 2026US 12,540,662 B2Usines CLAAS France S.A.S
- Large square baler drivetrain health monitoring system10 Sep 2026US 2026/0262575 A1Deere & Company
- Agricultural Baler30 Jul 2026US 2026/0215372 A1AGCO Corporation
- High-capacity baler with common needle frame29 Jan 2026US 2026/0026442 A1
- Clutch Assembly13 Nov 2025US 2025/0344643 A1Ortlinghaus-Werke GmbH
- Square baler implement with two speed drivetrain6 Mar 2025US 2025/0072331 A1Deere & Company
Most cited
By later US patents
- Hydraulically powered baler plunger drive mechanism19US 5,950,410 ADeere & Company · 1999
- Square baler having plunger cleanout means14US 4,829,756 AHesston Corporation · 1989
- Hay bale ventilator with ribs13US 5,101,719 A1992
- Hay baler aerator13US 5,540,143 AQuality Hay of Iowa, Co. · 1996
- Plunger press and method for producing compressed bales11US 9,204,596 B2Kuhn-Geldrop BV · 2015