F16L 19/0218
Comprising only sealing rings
Official title: {comprising only sealing rings}
F16L19/0218 (Comprising only sealing rings) appears on 213 US grants and 191 published applications in this corpus.
Search patents in F16L- Granted patents
- 213
- Published applications
- 191
- Assignees
- 165
- Inventors
- 422
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 5 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 10 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 3 |
| 2002 | 3 | 7 |
| 2003 | 7 | 2 |
| 2004 | 7 | 7 |
| 2005 | 1 | 9 |
| 2006 | 7 | 5 |
| 2007 | 2 | 1 |
| 2008 | 3 | 2 |
| 2009 | 1 | 5 |
| 2010 | 1 | 3 |
| 2011 | 3 | 6 |
| 2012 | 1 | 7 |
| 2013 | 5 | 5 |
| 2014 | 3 | 8 |
| 2015 | 5 | 9 |
| 2016 | 6 | 6 |
| 2017 | 7 | 11 |
| 2018 | 5 | 9 |
| 2019 | 7 | 13 |
| 2020 | 7 | 11 |
| 2021 | 13 | 11 |
| 2022 | 8 | 14 |
| 2023 | 10 | 8 |
| 2024 | 12 | 12 |
| 2025 | 11 | 11 |
| 2026 | 9 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Valve connector6 Oct 2026US 12,753,864 B2Co-Luck Enterprise Co., Ltd.
- Pipe joint assemblies7 Jul 2026US 12,674,530 B2Daoz International Holding Limited
- Chamfer ring for pipe coupling23 Jun 2026US 12,663,104 B2Hubbell Incorporated
- Valve connector26 May 2026US 12,638,109 B2Co-Luck Enterprise Co., Ltd.
- Dual sealing for high pressure gaseous fuels17 Feb 2026US 12,553,547 B2Pratt & Whitney Canada Corp.
- Chamfer ring for pipe coupling24 Sep 2026US 2026/0287095 A1
- Valve connector17 Sep 2026US 2026/0276117 A1Co-Luck Enterprise Co., Ltd.
- Dielectric union and method of assembling the same9 Jul 2026US 2026/0194168 A1Red-White Valve Corp.
- Pipe Joint2 Jul 2026US 2026/0185640 A1Sanoh Industrial Co., Ltd.
- Pipe Joint Assemblies21 May 2026US 2026/0139770 A1Daoz International Holding Limited
Most cited
By later US patents
- Connector for the use of pipes147US 3,997,193 AKubota Corporation · 1976
- Medical device with high pressure quick disconnect handpiece77US 6,923,792 B2HydroCision, Inc. · 2005
- Method of manufacturing a split ring airless rotatable connector74US 5,616,203 AMerit Medical · 1997
- Pipe couplings67US 4,072,328 AHepworth Plastics Limited · 1978
- Microfluidic interconnects63US 6,273,478 B1The Regents of the University of California · 2001