E02F 3/844
For positioning the blade
Official title: {for positioning the blade, e.g. hydraulically}
E02F3/844 (For positioning the blade) appears on 683 US grants and 623 published applications in this corpus.
Search patents in E02F- Granted patents
- 683
- Published applications
- 623
- Assignees
- 134
- Inventors
- 1,063
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 10 | 0 |
| 1978 | 7 | 0 |
| 1979 | 8 | 0 |
| 1980 | 4 | 0 |
| 1981 | 8 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 5 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 7 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 8 | 0 |
| 1998 | 12 | 0 |
| 1999 | 22 | 0 |
| 2000 | 19 | 0 |
| 2001 | 16 | 3 |
| 2002 | 8 | 3 |
| 2003 | 2 | 2 |
| 2004 | 3 | 3 |
| 2005 | 2 | 6 |
| 2006 | 9 | 6 |
| 2007 | 5 | 11 |
| 2008 | 2 | 14 |
| 2009 | 8 | 8 |
| 2010 | 8 | 11 |
| 2011 | 7 | 8 |
| 2012 | 9 | 11 |
| 2013 | 17 | 25 |
| 2014 | 18 | 20 |
| 2015 | 18 | 16 |
| 2016 | 18 | 36 |
| 2017 | 29 | 39 |
| 2018 | 26 | 29 |
| 2019 | 28 | 45 |
| 2020 | 34 | 78 |
| 2021 | 51 | 70 |
| 2022 | 54 | 41 |
| 2023 | 35 | 52 |
| 2024 | 46 | 31 |
| 2025 | 42 | 30 |
| 2026 | 28 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Differential dozer blade lift and angle mechanism6 Oct 2026US 12,753,572 B2
- Work machine and method for controlling work machine6 Oct 2026US 12,753,574 B2Komatsu Ltd.
- Work tool float management15 Sep 2026US 12,735,858 B2Caterpillar Inc.
- Methods and systems for controlling earth-moving vehicle operated by artificial intelligence15 Sep 2026US 12,735,859 B2AIM Intelligent Machines, Inc.
- Automatic blade pitch adjustment for dozer15 Sep 2026US 12,735,860 B1Deere & Company
- Multidirectional grading control for work machines8 Oct 2026US 2026/0308871 A1Deere & Company
- Generation of a smooth path profile for an implement of a machine based on a set of terrain points10 Sep 2026US 2026/0266028 A1Caterpillar Inc.
- Variable blade float3 Sep 2026US 2026/0258636 A1Deere & Company
- Work machine with material management during grading operations27 Aug 2026US 2026/0250930 A1Deere & Company
- Positionable vibratory roller13 Aug 2026US 2026/0234889 A1Deere & Company
Most cited
By later US patents
- Method and apparatus for establishing a perimeter defining an area to be traversed by a mobile machine227US 6,112,143 ACaterpillar Inc. · 2000
- Position sensing system for surveying and grading189US 4,820,041 AAGTEK Development Company, Inc. · 1989
- Method and apparatus for accurately positioning a tool on a mobile machine using on-board laser and positioning system172US 6,108,076 ATrimble Navigation Limited · 2000
- Grading system149US 4,807,131 AClegg Engineering, Inc. · 1989
- Earthmoving apparatus and method for grading land providing continuous resurveying127US 5,375,663 ASpectra-Physics Laserplane, Inc. · 1994