F16K 31/128
Servo actuated
Official title: servo actuated
F16K31/128 (Servo actuated) appears on 85 US grants and 87 published applications in this corpus.
Search patents in F16K- Granted patents
- 85
- Published applications
- 87
- Assignees
- 75
- Inventors
- 177
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 0 | 3 |
| 2005 | 1 | 1 |
| 2006 | 2 | 2 |
| 2007 | 3 | 0 |
| 2008 | 0 | 2 |
| 2009 | 1 | 2 |
| 2010 | 0 | 4 |
| 2011 | 0 | 1 |
| 2012 | 4 | 3 |
| 2013 | 2 | 2 |
| 2014 | 4 | 5 |
| 2015 | 4 | 6 |
| 2016 | 4 | 9 |
| 2017 | 9 | 8 |
| 2018 | 8 | 8 |
| 2019 | 12 | 9 |
| 2020 | 6 | 6 |
| 2021 | 5 | 5 |
| 2022 | 6 | 1 |
| 2023 | 3 | 3 |
| 2024 | 2 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pneumatic drain valve driving device2 Jun 2026US 12,644,267 B2Kohler (China) Investment Co., Ltd.
- Pool cleaning system controller valve4 Feb 2025US 12,215,793 B2Pul Products, LLC
- Valve for a vacuum apparatus23 Apr 2024US 11,965,602 B2Atlas Copco Airpower N.V.
- Degradation detection system, brake control device, and degradation detection method20 Feb 2024US 11,904,826 B2Mitsubishi Electric Corporation
- Expandable pilot assembly for pressure regulators1 Aug 2023US 11,713,827 B2Dresser, Inc.
- Pneumatic drain valve driving device17 Sep 2026US 2026/0275694 A1Kohler (China) Investment Co., Ltd.
- Flow-adjusting valve spool with button20 Aug 2026US 2026/0243362 A1Kaiping Yizhan Valve Core Co., Ltd.
- Linkage-type constant-pressure valve23 Jul 2026US 2026/0211434 A1Asahi Yukizai Corporation
- Valve without body28 Aug 2025US 2025/0271066 A1
- Pneumatic drain valve driving device5 Sep 2024US 2024/0295107 A1Kohler (China) Investment Co., Ltd.
Most cited
By later US patents
- Digitally controllable flow rate valve48US 5,887,847 AAutomatic Switch Company · 1999
- Stepper motor valve and method of control26US 8,381,760 B2Emerson Electric Co. · 2013
- Shutoff valve system with leak detector25US 7,082,959 B12006
- Stop valve and control/mixing system for fluids22US 5,042,775 AKoppens Automatic Fabrieken B. V. · 1991
- Fluid activated flow control apparatus18US 10,088,849 B2Colt Irrigation, LLC · 2018