F16L 21/08
Joints with sleeve or socket: with additional locking means
Official title: with additional locking means (F16L21/06 takes precedence; couplings of the quick-acting type F16L37/00)
F16L21/08 (Joints with sleeve or socket: with additional locking means) appears on 719 US grants and 672 published applications in this corpus.
Search patents in F16L- Granted patents
- 719
- Published applications
- 672
- Assignees
- 418
- Inventors
- 1,123
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 15 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 8 | 0 |
| 1987 | 13 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 5 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 7 | 0 |
| 1998 | 15 | 0 |
| 1999 | 13 | 0 |
| 2000 | 15 | 0 |
| 2001 | 15 | 5 |
| 2002 | 7 | 6 |
| 2003 | 5 | 9 |
| 2004 | 8 | 9 |
| 2005 | 6 | 12 |
| 2006 | 7 | 13 |
| 2007 | 7 | 8 |
| 2008 | 8 | 22 |
| 2009 | 8 | 8 |
| 2010 | 8 | 19 |
| 2011 | 9 | 25 |
| 2012 | 11 | 19 |
| 2013 | 13 | 26 |
| 2014 | 12 | 25 |
| 2015 | 16 | 59 |
| 2016 | 27 | 64 |
| 2017 | 40 | 40 |
| 2018 | 44 | 42 |
| 2019 | 53 | 45 |
| 2020 | 42 | 47 |
| 2021 | 43 | 36 |
| 2022 | 50 | 30 |
| 2023 | 31 | 31 |
| 2024 | 37 | 25 |
| 2025 | 28 | 26 |
| 2026 | 20 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Locking segment with logarithmic spiral surface1 Sep 2026US 12,723,686 B1United States Pipe and Foundry Company
- Ceiling-mounted radiating elements28 Jul 2026US 12,693,034 B2Kermi GmbH
- Sealing devices and related methods for oil and gas applications21 Jul 2026US 12,687,246 B2Saudi Arabian Oil Company
- Pipe fitting with assembly window2 Jun 2026US 12,644,547 B1
- Adapter systems26 May 2026US 12,638,111 B2
- Fluid-circulation housing and method for assembling such a housing8 Oct 2026US 2026/0309257 A1Vernet
- Fitting24 Sep 2026US 2026/0287098 A1Geberit International AG
- Pipe joint17 Sep 2026US 2026/0276118 A1Kubota Corporation
- Pipe coupling with pipe connection rings13 Aug 2026US 2026/0235236 A1ASC Engineered Solutions, LLC
- Ring body, pipe joint, and method for joining pipes using the ring body16 Jul 2026US 2026/0201987 A1Kubota Corporation
Most cited
By later US patents
- Tubing interconnection system with different size snap ring grooves125US 5,845,945 A1998
- Tubing interconnection system with different size snap ring grooves120US 5,584,512 A1996
- Pipe coupling for plain ended pipe119US 5,911,446 AVictaulic Company of America · 1999
- Pipe coupling for plain ended pipe and for plain ended pipe attached to grooved pipe109US 6,170,884 B2Victaulic Company of America · 2001
- Locking joint for pipe systems91US 5,297,826 APont-A-Mousson S. A. · 1994