E02F 9/226
Safety arrangements
Official title: {Safety arrangements, e.g. hydraulic driven fans, preventing cavitation, leakage, overheating}
E02F9/226 (Safety arrangements) appears on 582 US grants and 623 published applications in this corpus.
Search patents in E02F- Granted patents
- 582
- Published applications
- 623
- Assignees
- 183
- Inventors
- 1,216
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 9 | 0 |
| 2000 | 7 | 0 |
| 2001 | 8 | 2 |
| 2002 | 8 | 8 |
| 2003 | 13 | 16 |
| 2004 | 11 | 15 |
| 2005 | 15 | 14 |
| 2006 | 11 | 18 |
| 2007 | 17 | 16 |
| 2008 | 8 | 16 |
| 2009 | 10 | 19 |
| 2010 | 12 | 13 |
| 2011 | 11 | 11 |
| 2012 | 8 | 16 |
| 2013 | 19 | 32 |
| 2014 | 23 | 40 |
| 2015 | 23 | 31 |
| 2016 | 33 | 28 |
| 2017 | 27 | 28 |
| 2018 | 25 | 26 |
| 2019 | 33 | 18 |
| 2020 | 29 | 43 |
| 2021 | 26 | 40 |
| 2022 | 40 | 35 |
| 2023 | 28 | 38 |
| 2024 | 30 | 43 |
| 2025 | 42 | 33 |
| 2026 | 28 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Construction machine25 Aug 2026US 12,716,203 B2Kobelco Construction Machinery Co., Ltd.
- Hydrovac with safe state25 Aug 2026US 12,716,204 B2Brandt Industries Canada Ltd.
- Method for real-time hydraulic cylinder drift monitoring25 Aug 2026US 12,716,432 B2Caterpillar Inc.
- Drive system for work machine, control device for work machine, control method for work machine, storage medium storing control program for work machine, and work machine8 Oct 2026US 2026/0308874 A1Nabtesco Corporation
- Hydraulic control system for construction machines, and control method thereof8 Oct 2026US 2026/0308881 A1Hd Construction Equiment Co., Ltd.
- Working vehicle1 Oct 2026US 2026/0297894 A1Takeuchi Mfg. Co., Ltd.
- Work machine control system, work machine, and work machine control method20 Aug 2026US 2026/0243060 A1Komatsu Ltd.
- Work vehicle13 Aug 2026US 2026/0234908 A1Kubota Corporation
Most cited
By later US patents
- Variable flow hydraulic system73US 6,029,445 ACase Corporation · 2000
- Features of main control computer for a power machine60US 6,202,014 B1Clark Equipment Company · 2001
- Multi-actuator pressure-based flow control system49US 7,260,931 B2Caterpillar Inc. · 2007
- Control apparatus and method for automatically controlling a hydraulic system for heavy construction equipment45US 5,251,440 ASamsung Heavy Industries Co., Ltd. · 1993
- Hydraulic regeneration system44US 6,748,738 B2Caterpillar Inc. · 2004