F16L 13/02
Welded joints
F16L13/02 (Welded joints) appears on 552 US grants and 600 published applications in this corpus.
Search patents in F16L- Granted patents
- 552
- Published applications
- 600
- Assignees
- 434
- Inventors
- 1,246
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 3 | 0 |
| 1978 | 7 | 0 |
| 1979 | 8 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 6 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 6 | 0 |
| 1987 | 10 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 6 | 0 |
| 1993 | 5 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 8 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 6 | 0 |
| 2000 | 8 | 0 |
| 2001 | 5 | 1 |
| 2002 | 3 | 2 |
| 2003 | 3 | 4 |
| 2004 | 2 | 11 |
| 2005 | 8 | 11 |
| 2006 | 6 | 18 |
| 2007 | 5 | 17 |
| 2008 | 4 | 20 |
| 2009 | 12 | 14 |
| 2010 | 10 | 32 |
| 2011 | 11 | 18 |
| 2012 | 8 | 20 |
| 2013 | 16 | 29 |
| 2014 | 11 | 32 |
| 2015 | 18 | 34 |
| 2016 | 19 | 36 |
| 2017 | 28 | 40 |
| 2018 | 36 | 27 |
| 2019 | 35 | 35 |
| 2020 | 28 | 31 |
| 2021 | 28 | 42 |
| 2022 | 28 | 38 |
| 2023 | 31 | 15 |
| 2024 | 34 | 36 |
| 2025 | 24 | 21 |
| 2026 | 17 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F16L 13/0254The pipes having an internal or external coating175
- F16L 13/0209Male-female welded joints71
- F16L 13/0218Having an inner or outer ring67
- F16L 13/04With arrangements preventing overstressing63
- F16L 13/0245With holes in the sleeve or spigot being filled with weld13
- F16L 13/0281Cold welded10
- F16L 13/029For concrete pipes3
Recent patents
- Agricultural sprayer boom truss8 Sep 2026US 12,727,592 B2Deere & Company
- Coiled tubing weld-on connector4 Aug 2026US 12,698,681 B2National Oilwell Varco, L. P.
- Lined pipe and joints thereof4 Aug 2026US 12,698,850 B2
- Girth welded joint of steel pipe7 Jul 2026US 12,674,529 B2Nippon Steel Corporation
- Housing assembly for use in a heat exchange system19 May 2026US 12,631,272 B2Danfoss A/S
- Establishment of a connection between a pipe and a block, and block having a pipe1 Oct 2026US 2026/0298377 A1Siemens Energy Global GmbH & Co. KG
- High purity flexible conduit assembly and method17 Sep 2026US 2026/0276113 A1Hose Master, Inc.
- Fluid distribution junction3 Sep 2026US 2026/0258894 A1SaniSure, Inc.
- Methods and systems for connecting pipes6 Aug 2026US 2026/0227011 A1Saudi Arabian Oil Company
- Liquid distributor branch pipe structure and liquid distributor23 Jul 2026US 2026/0210459 A1Hanshan Ruike Metal Co., Ltd.
Most cited
By later US patents
- Magnetic field concentrator for electromagnetic forming333US 7,513,025 B2The Boeing Company · 2009
- Method of joining lined pipes120US 6,226,855 B1Lattice Intellectual Property Limited · 2001
- Filament wound interlaminate tubular attachment77US 4,530,379 AHercules Incorporated · 1985
- Multilayer pipe joint58US 4,400,019 AUnisert Systems, Inc. · 1983
- Reforming pipe clamp46US 3,952,936 A1976