E02F 9/225
Control of steering
Official title: {Control of steering, e.g. for hydraulic motors driving the vehicle tracks (steering in general B62D)}
E02F9/225 (Control of steering) appears on 239 US grants and 266 published applications in this corpus.
Search patents in E02F- Granted patents
- 239
- Published applications
- 266
- Assignees
- 81
- Inventors
- 531
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 7 |
| 2003 | 7 | 5 |
| 2004 | 3 | 0 |
| 2005 | 3 | 2 |
| 2006 | 1 | 3 |
| 2007 | 3 | 5 |
| 2008 | 0 | 10 |
| 2009 | 3 | 7 |
| 2010 | 1 | 7 |
| 2011 | 7 | 8 |
| 2012 | 6 | 7 |
| 2013 | 12 | 8 |
| 2014 | 3 | 10 |
| 2015 | 10 | 12 |
| 2016 | 12 | 8 |
| 2017 | 8 | 8 |
| 2018 | 7 | 11 |
| 2019 | 10 | 15 |
| 2020 | 17 | 14 |
| 2021 | 12 | 28 |
| 2022 | 21 | 27 |
| 2023 | 19 | 18 |
| 2024 | 22 | 25 |
| 2025 | 16 | 13 |
| 2026 | 16 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Multi-use power end for forming multiple work machines11 Jun 2026US 2026/0160039 A1Caterpillar Paving Products Inc.
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Most cited
By later US patents
- Steering system with automated articulation control77US 8,548,680 B2Caterpillar Inc. · 2013
- Apparatus for controlling lifting operation48US 5,692,377 AShin Caterpillar Mitsubishi Ltd. · 1997
- Method and apparatus for controlling straight line travel of a tracked machine48US 6,445,990 B1Caterpillar Inc. · 2002
- Hand grip with microprocessor for controlling a power machine45US 6,550,562 B2Clark Equipment Company · 2003
- Electronic traction control system43US 6,631,320 B1Caterpillar Inc. · 2003