F16L 21/022
Used with sleeves or nipples for pipes of the same diameter, or
Official title: {used with sleeves or nipples for pipes of the same diameter, or with reduction pieces (F16L21/025 takes precedence)}
F16L21/022 (Used with sleeves or nipples for pipes of the same diameter, or) appears on 159 US grants and 154 published applications in this corpus.
Search patents in F16L- Granted patents
- 159
- Published applications
- 154
- Assignees
- 113
- Inventors
- 243
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 1 | 0 |
| 1978 | 6 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 5 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 2 |
| 2003 | 4 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 2 |
| 2006 | 1 | 3 |
| 2007 | 1 | 2 |
| 2008 | 0 | 2 |
| 2009 | 3 | 4 |
| 2010 | 3 | 8 |
| 2011 | 2 | 7 |
| 2012 | 1 | 7 |
| 2013 | 3 | 13 |
| 2014 | 6 | 10 |
| 2015 | 12 | 11 |
| 2016 | 9 | 3 |
| 2017 | 5 | 11 |
| 2018 | 6 | 9 |
| 2019 | 7 | 11 |
| 2020 | 8 | 11 |
| 2021 | 12 | 3 |
| 2022 | 9 | 7 |
| 2023 | 2 | 11 |
| 2024 | 11 | 5 |
| 2025 | 7 | 5 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pre-assembled coupling assembly with cap31 Mar 2026US 12,590,657 B2ASC Engineered Solutions, LLC
- Conduit coupler and methods of use thereof17 Feb 2026US 12,553,548 B2Coupler Solutions Limited
- Brittle material joints with dynamic sealing11 Nov 2025US 12,467,565 B2Fourth Power, Inc.
- Wye fitting attachment23 Sep 2025US 12,422,082 B2Goodrich Corporation
- Connector and connector assembly for multi-chamber profiles and/or conduits20 May 2025US 12,305,781 B2Norma Germany GmbH
- Pre-assembled coupling assembly with cap6 Aug 2026US 2026/0227014 A1ASC Engineered Solutions, LLC
- Conduit coupler and methods of use thereof4 Jun 2026US 2026/0153170 A1Coupler Solutions Limited
- Pipe, pipe connection and pipeline system28 May 2026US 2026/0146691 A1Core Linepipe Inc.
- Conduit coupler and methods of use thereof21 May 2026US 2026/0139771 A1Coupler Solutions Limited
- Brittle Material Joints With Dynamic Sealing5 Feb 2026US 2026/0036230 A1Fourth Power, Inc.
Most cited
By later US patents
- Apparatus for connecting ducts with a self-sealing joint102US 3,955,834 AAktiebolaget Svenska Flaktfabriken · 1976
- Seal for coupling and connecting means51US 6,293,556 B1Krausz Metal Industries Ltd. · 2001
- Pipe coupling with built-in grip51US 7,571,940 B2Krausz Metal Industries Ltd. · 2009
- Flexible packing for sealing pipeline joints48US 4,298,206 A1981
- Coupling47US 3,995,897 AEaton Corporation · 1976