F16K 15/1441
With biasing means in addition to material resiliency
Official title: {with biasing means in addition to material resiliency, e.g. spring}
F16K15/1441 (With biasing means in addition to material resiliency) appears on 42 US grants and 19 published applications in this corpus.
Search patents in F16K- Granted patents
- 42
- Published applications
- 19
- Assignees
- 31
- Inventors
- 71
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 2 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 3 |
| 2012 | 0 | 0 |
| 2013 | 2 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 1 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 3 |
| 2022 | 2 | 0 |
| 2023 | 1 | 3 |
| 2024 | 3 | 2 |
| 2025 | 2 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pneumatic valve17 Mar 2026US 12,578,025 B2AUMOVIO Germany GmbH
- Bi-directional relief valve10 Jun 2025US 12,326,197 B2Unibloc Hygienic Technologies US, LLC
- Leak-free, diffusion-blocking check valve, pump and method25 Mar 2025US 12,258,952 B2Rochester Institute of Technology
- Pressure operated fluid valve with configurable diaphragm arrangement24 Dec 2024US 12,173,805 B2HD Fire Protect Private Limited
- Cleaning system for vehicles and cleaning method for same10 Dec 2024US 12,162,439 B2Denso Corporation
- Valve for maintaining the residual pressure in an air suspension of a vehicle13 Aug 2026US 2026/0235215 A1Wonder Co., Ltd.
- Duckbill Flow Control Devices Having a Dynamic Recovery Mechanism and Methods of Using the Same18 Sep 2025US 2025/0290571 A1Red Valve Company, Inc.
- Pneumatic valve19 Jun 2025US 2025/0198519 A1Conti Temic microelectronic GmbH
- Pressure operated fluid valve with configurable diaphragm arrangement22 Aug 2024US 2024/0280182 A1HD Fire Protect Private Limited
- Leak-Free, Diffusion-Blocking Check Valve, Pump and Method15 Aug 2024US 2024/0271610 A1Rochester Institute of Technology
Most cited
By later US patents
- Normally closed duckbill valve assembly191US 5,010,925 AVernay Laboratories, Inc. · 1991
- Bi-directional pressure relief valve182US 4,434,810 AVernay Laboratories, Inc. · 1984
- Normally closed duckbill valve and method of manufacture173US 4,524,805 A1985
- Cannula cap including yeildable outer seal and flapper valve101US 5,820,604 AEndolap, Inc. · 1998
- Duckbill valve83US 6,092,551 AChesebrough-Pond' s USA Co., Division of Conopco, Inc. · 2000