F15B 2211/655
Methods of contamination control, i.e. methods of control of the cleanliness of
Official title: Methods of contamination control, i.e. methods of control of the cleanliness of circuit components or of the pressure fluid
F15B2211/655 (Methods of contamination control, i.e. methods of control of the cleanliness of) appears on 25 US grants and 41 published applications in this corpus.
Search patents in F15B- Granted patents
- 25
- Published applications
- 41
- Assignees
- 29
- Inventors
- 90
- Latest grant
- 11 Aug 2026
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| Year | Granted patents | Published applications |
|---|---|---|
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 2 |
| 2015 | 1 | 1 |
| 2016 | 1 | 2 |
| 2017 | 2 | 2 |
| 2018 | 0 | 6 |
| 2019 | 4 | 3 |
| 2020 | 7 | 4 |
| 2021 | 2 | 0 |
| 2022 | 0 | 3 |
| 2023 | 1 | 2 |
| 2024 | 3 | 4 |
| 2025 | 1 | 7 |
| 2026 | 1 | 3 |
By publication year. 2026 runs to 8 Oct.
Recent patents
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- Fluid property monitoring system, method for detecting abnormality in detected value from fluid property sensor, and program20 Aug 2026US 2026/0243718 A1KYB Corporation
- Construction Machine26 Mar 2026US 2026/0085500 A1Hitachi Construction Machinery Co., Ltd.
- Fluid monitoring and contaminant detection in hydraulic cylinders using high-frequency electromagnetic signals5 Feb 2026US 2026/0036529 A1Pacoma GmbH
- Hydraulic Drive System4 Dec 2025US 2025/0369460 A1
- Online monitoring system and method for hydraulic oil of power aerial work vehicle, and device18 Sep 2025US 2025/0290528 A1Electric Power Research Institute. China Southern Power Grid
Most cited
By later US patents
- Hydraulic circuit for automatic transmission1,004US 9,488,197 B2Hyundai Motor Company · 2016
- Compact lifter12US 6,305,668 B12001
- Control of supply of air to a pneumatic valve actuator4US 10,989,326 B2Alfa Laval Corporate AB · 2021
- Closed-loop solenoid system2US 10,337,277 B2Cameron International Corporation · 2019
- Mechanical device2US 10,655,514 B2Komatsu Ltd. · 2020