F15B 2201/51
Pressure detection
F15B2201/51 (Pressure detection) appears on 102 US grants and 117 published applications in this corpus.
Search patents in F15B- Granted patents
- 102
- Published applications
- 117
- Assignees
- 75
- Inventors
- 265
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 3 |
| 2003 | 1 | 3 |
| 2004 | 3 | 4 |
| 2005 | 1 | 2 |
| 2006 | 2 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 7 |
| 2014 | 2 | 11 |
| 2015 | 2 | 4 |
| 2016 | 3 | 3 |
| 2017 | 8 | 13 |
| 2018 | 3 | 16 |
| 2019 | 14 | 6 |
| 2020 | 13 | 8 |
| 2021 | 8 | 11 |
| 2022 | 9 | 5 |
| 2023 | 5 | 7 |
| 2024 | 9 | 6 |
| 2025 | 6 | 4 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Work machine accessory motor load protection8 Sep 2026US 12,729,699 B2Caterpillar Inc.
- Fluid circuit3 Mar 2026US 12,565,902 B2Eagle Industry Co., Ltd.
- Life determination device and life determination method30 Dec 2025US 12,510,394 B2Toyota Jidosha Kabushiki Kaisha
- Advanced hydraulic accumulator autostart4 Nov 2025US 12,460,660 B2GJR Meyer Service, Inc.
- Auxiliary hydraulic system for a work vehicle21 Oct 2025US 12,448,989 B2Deere & Company
- Load dampening system13 Aug 2026US 2026/0235142 A1J. C. Bamford Excavators Limited
- Intermediate hydraulic system and method of use30 Apr 2026US 2026/0117802 A1Country Mechanical Services
- Work machine accessory motor load protection11 Dec 2025US 2025/0376995 A1Caterpillar Inc.
- Method for checking the state of a hydraulic accumulator16 Oct 2025US 2025/0320882 A1Deere & Company
- Method for checking the state of a hydraulic accumulator11 Sep 2025US 2025/0283488 A1Deere & Company
Most cited
By later US patents
- Hydraulic hybrid accumulator shut-off valve32US 6,619,325 B2The United States of America as represented by the Administrator of the U. S. Environmental Protection Agency · 2003
- Hydraulic driving apparatus using a bladder-type accumulator with an improved safety23US 5,630,316 ASumitomo Heavy Industries, Ltd. · 1997
- Undersea control and actuation system17US 6,298,767 B1Delaware Capital Formation, Inc. · 2001
- High pressure accumulator16US 4,611,634 ABrown, Boveri & Cie AG · 1986
- Apparatus for diagnosing accumulator based on fluid pressure in its fluid-tightly sealed state15US 6,494,545 B2NHK Spring Co., Ltd. · 2002