E02F 3/815
Blades
Official title: Blades; Levelling {or scarifying} tools {(E02F3/40 takes precedence)}
E02F3/815 (Blades) appears on 578 US grants and 499 published applications in this corpus.
Search patents in E02F- Granted patents
- 578
- Published applications
- 499
- Assignees
- 190
- Inventors
- 851
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 11 | 0 |
| 1978 | 22 | 0 |
| 1979 | 7 | 0 |
| 1980 | 10 | 0 |
| 1981 | 15 | 0 |
| 1982 | 10 | 0 |
| 1983 | 4 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 8 | 0 |
| 1988 | 6 | 0 |
| 1989 | 7 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 7 | 0 |
| 1994 | 5 | 0 |
| 1995 | 9 | 0 |
| 1996 | 5 | 0 |
| 1997 | 8 | 0 |
| 1998 | 17 | 0 |
| 1999 | 6 | 0 |
| 2000 | 9 | 0 |
| 2001 | 7 | 3 |
| 2002 | 9 | 9 |
| 2003 | 11 | 12 |
| 2004 | 8 | 16 |
| 2005 | 12 | 13 |
| 2006 | 5 | 4 |
| 2007 | 6 | 14 |
| 2008 | 6 | 14 |
| 2009 | 8 | 23 |
| 2010 | 17 | 5 |
| 2011 | 11 | 13 |
| 2012 | 8 | 14 |
| 2013 | 10 | 17 |
| 2014 | 17 | 16 |
| 2015 | 11 | 16 |
| 2016 | 13 | 29 |
| 2017 | 15 | 25 |
| 2018 | 24 | 38 |
| 2019 | 29 | 37 |
| 2020 | 24 | 33 |
| 2021 | 22 | 35 |
| 2022 | 25 | 32 |
| 2023 | 14 | 29 |
| 2024 | 32 | 13 |
| 2025 | 15 | 22 |
| 2026 | 15 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- In and relating to the working of ground and other surfaces8 Sep 2026US 12,729,506 B2Progressive IP Limited
- Holding device for a work vehicle attachment8 Sep 2026US 12,729,516 B2Deere & Company
- Ripper shank, shank holder, and ground engaging implement for using the same1 Sep 2026US 12,721,249 B2
- Drag bar for levelling ground4 Aug 2026US 12,698,614 B2
- Shouldering board assembly16 Jun 2026US 12,655,604 B2Soterran Group, LLC
- Snow plow mounting system3 Sep 2026US 2026/0258619 A1Buyers Products Company
- Work machine with material management during grading operations27 Aug 2026US 2026/0250930 A1Deere & Company
- Positionable vibratory roller13 Aug 2026US 2026/0234889 A1Deere & Company
- Ride control using pressure regulated cylinders23 Jul 2026US 2026/0210072 A1Deere & Company
- Grading attachment23 Jul 2026US 2026/0210073 A1Ligchine International Corporation
Most cited
By later US patents
- Rake attachment with scarifying teeth for a skid steer100US 5,515,625 AHydroseed Manufacturing, Incorporated · 1996
- Variable wing plow blade and mounting structure therefor72US 4,249,323 ADe Lorean Manufacturing Company · 1981
- Adjustable wing plow72US 5,638,618 ABlizzard Corporation · 1997
- Plow blade and moldboard shoe72US 7,874,085 B1Winter Equipment Company · 2011
- Folding pusher66US 6,425,196 B1Pro-Tech Welding and Fabrication, Inc. · 2002