F15B 11/0413
In one direction only, with no control in the reverse direction
Official title: {in one direction only, with no control in the reverse direction, e.g. check valve in parallel with a throttle valve}
F15B11/0413 (In one direction only, with no control in the reverse direction) appears on 51 US grants and 40 published applications in this corpus.
Search patents in F15B- Granted patents
- 51
- Published applications
- 40
- Assignees
- 35
- Inventors
- 92
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 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 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 2 |
| 2003 | 1 | 2 |
| 2004 | 1 | 0 |
| 2005 | 1 | 3 |
| 2006 | 2 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 3 |
| 2016 | 0 | 2 |
| 2017 | 2 | 3 |
| 2018 | 3 | 3 |
| 2019 | 5 | 1 |
| 2020 | 2 | 3 |
| 2021 | 5 | 2 |
| 2022 | 0 | 5 |
| 2023 | 5 | 4 |
| 2024 | 8 | 2 |
| 2025 | 1 | 3 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Regulator having check valve manifold for use in subsea control circuit9 Jun 2026US 12,650,052 B2National Coupling Company, Inc.
- Oil drain valve, energy accumulation device, hydraulic system and working machine5 May 2026US 12,618,423 B2Sany Autmobile Manufacturing Co. Ltd
- Two-stage speed controller15 Apr 2025US 12,276,288 B1Taiwan Chelic Co., Ltd.
- Regulator having check valve manifold for use in subsea control circuit24 Dec 2024US 12,173,576 B2National Coupling Company, Inc.
- Flow control block for use with a vacuum material handler10 Sep 2024US 12,085,099 B1Vacuworx Global, LLC
- Two-stage speed controller17 Apr 2025US 2025/0122893 A1Taiwan Chelic Co., Ltd.
- Actuator with integrated accumulator17 Apr 2025US 2025/0122894 A1
- Regulator having check valve manifold for use in subsea control circuit20 Mar 2025US 2025/0092753 A1National Coupling Company, Inc.
- Oil drain valve, energy accumulation device, hydraulic system and working machine27 Jun 2024US 2024/0209874 A1Sany Automobile Manufacturing Co., Ltd.
- Regulator Having Check Valve Manifold for Use in Subsea Control Circuit18 Apr 2024US 2024/0125192 A1National Coupling Company, Inc.
Most cited
By later US patents
- Hydraulic valve module63US 4,170,214 ADouble A Products Company · 1979
- Unidirectional flow limiter22US 4,171,007 ASociete Anonyme: La Telemecanique Electrique · 1979
- Unidirectional flow limiter19US 4,214,607 ASociete Anonyme: La Telemecanique Electrique · 1980
- Lock valve flow control arrangement16US 4,012,031 AAffiliated Hospital Products, Inc. · 1977
- Flow rate control valve11US 4,262,695 AShoketsu Kinzoku Kogyo Kabushiki Kaisha · 1981