F16L 21/06
Joints with sleeve or socket: with a divided sleeve or ring clamping
Official title: with a divided sleeve or ring clamping around the pipe ends (flanged joints F16L23/00; couplings of the quick-acting type F16L37/00)
F16L21/06 (Joints with sleeve or socket: with a divided sleeve or ring clamping) appears on 644 US grants and 630 published applications in this corpus.
Search patents in F16L- Granted patents
- 644
- Published applications
- 630
- Assignees
- 286
- Inventors
- 956
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 4 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 6 | 0 |
| 1985 | 3 | 0 |
| 1986 | 6 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 9 | 0 |
| 1993 | 6 | 0 |
| 1994 | 10 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 6 | 0 |
| 1998 | 7 | 0 |
| 1999 | 4 | 0 |
| 2000 | 6 | 0 |
| 2001 | 9 | 1 |
| 2002 | 6 | 6 |
| 2003 | 11 | 15 |
| 2004 | 9 | 17 |
| 2005 | 11 | 30 |
| 2006 | 13 | 18 |
| 2007 | 7 | 13 |
| 2008 | 13 | 24 |
| 2009 | 17 | 16 |
| 2010 | 18 | 17 |
| 2011 | 10 | 17 |
| 2012 | 8 | 19 |
| 2013 | 10 | 21 |
| 2014 | 10 | 21 |
| 2015 | 19 | 33 |
| 2016 | 24 | 23 |
| 2017 | 27 | 36 |
| 2018 | 29 | 35 |
| 2019 | 20 | 39 |
| 2020 | 46 | 48 |
| 2021 | 40 | 28 |
| 2022 | 34 | 37 |
| 2023 | 43 | 39 |
| 2024 | 45 | 31 |
| 2025 | 33 | 30 |
| 2026 | 23 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Quick-fitting pipe fitting29 Sep 2026US D1,149,644 S1Shanghai Vision Mechanical Joint Co., Ltd. · Design
- Retaining device for end rings of pipe coupling22 Sep 2026US 12,742,510 B1Krausz Industries Ltd.
- Mining hose connecting device and method18 Aug 2026US 12,710,120 B2CCTEG Chongqing Research Institute Co., Ltd.
- Groove-free quick-insert pipe clamp and processing device thereof14 Jul 2026US 12,680,633 B2Weifang 100Tong Casting Co.,Ltd.
- Fluid connection assembly7 Jul 2026US 12,674,531 B2Oetiker NY, Inc.
- Compression fittings and systems, kits, and methods incorporating the same24 Sep 2026US 2026/0287097 A1Titeflex Corporation
- Air-conditioner decoration tube27 Aug 2026US 2026/0251239 A1
- Pipe element, coupling and roller set27 Aug 2026US 2026/0251240 A1Victaulic Company
- Grooved Pipe Element and Coupling27 Aug 2026US 2026/0251244 A1Victaulic Company
- Grooved Pipe Element and Coupling27 Aug 2026US 2026/0251247 A1Victaulic Company
Most cited
By later US patents
- Pipe coupling130US 4,417,755 AFamilian Corp. · 1983
- Pipeline system and method of assembly124US 4,601,495 AVictaulic Company of America · 1986
- Anti-mismatch or near-sized coupling segments123US 6,626,466 B1Victaulic Company of America · 2003
- Multiple key segmented pipe coupling122US 4,522,434 AVictaulic Company of America · 1985
- Anti-mismatch of near-sized coupling segments122US 7,090,259 B2Victaulic Company · 2006