F16K 15/08
Shaped as rings
Official title: shaped as rings
F16K15/08 (Shaped as rings) appears on 103 US grants and 86 published applications in this corpus.
Search patents in F16K- Granted patents
- 103
- Published applications
- 86
- Assignees
- 82
- Inventors
- 189
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 2 | 3 |
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 2 | 3 |
| 2007 | 0 | 1 |
| 2008 | 1 | 4 |
| 2009 | 2 | 3 |
| 2010 | 1 | 2 |
| 2011 | 0 | 0 |
| 2012 | 2 | 2 |
| 2013 | 1 | 5 |
| 2014 | 2 | 4 |
| 2015 | 3 | 3 |
| 2016 | 3 | 4 |
| 2017 | 4 | 1 |
| 2018 | 7 | 5 |
| 2019 | 2 | 13 |
| 2020 | 6 | 6 |
| 2021 | 9 | 9 |
| 2022 | 10 | 4 |
| 2023 | 3 | 3 |
| 2024 | 5 | 0 |
| 2025 | 2 | 4 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Valve for a piston compressor, and method for operating such a valve5 May 2026US 12,618,400 B2Burckhardt Compression AG
- Valve plate6 Jan 2026US 12,516,739 B1KB Delta, Inc.
- Dual air admittance valve21 Oct 2025US 12,448,762 B2
- Flow control device13 May 2025US 12,296,307 B2Ozone 1 Pty Ltd
- Vacuum machining system having a process chamber with a vacuum regulating valve24 Dec 2024US 12,172,252 B2VAT Holding AG
- Air admittance valve assembly21 May 2026US 2026/0139750 A1
- Dual air admittance valve26 Mar 2026US 2026/0085507 A1
- Valve plate8 Jan 2026US 2026/0009471 A1KB Delta, Inc.
- Flow control device7 Aug 2025US 2025/0249414 A1Ozone 1 Pty Ltd
- Adjustable position sensitive base valve24 Jul 2025US 2025/0237285 A1Fox Factory, Inc.
Most cited
By later US patents
- Linear flow turn down valve44US 5,009,393 AHarper-Wyman Company · 1991
- Compressor inlet valve35US 5,785,081 AWestinghouse Air Brake Company · 1998
- Differential pressure valve with parallel biasing springs and method for reducing spring surge27US 9,297,373 B2Nuovo Pignone S.p.A. · 2016
- Check valve and valve arrangement comprising such a check valve24US 6,899,126 B2Hydraulik-Ring GmbH · 2005
- Valve structure of hydraulic buffer23US 4,721,130 AToyota Jidosha Kabushiki Kaisha · 1988