F16L 25/02
Construction or details of pipe joints not provided for in, or of
Official title: specially adapted for electrically insulating the two pipe ends of the joint from each other
F16L25/02 (Construction or details of pipe joints not provided for in, or of) appears on 227 US grants and 172 published applications in this corpus.
Search patents in F16L- Granted patents
- 227
- Published applications
- 172
- Assignees
- 141
- Inventors
- 425
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 9 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 6 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 0 |
| 2002 | 5 | 5 |
| 2003 | 2 | 1 |
| 2004 | 4 | 3 |
| 2005 | 0 | 6 |
| 2006 | 4 | 6 |
| 2007 | 2 | 5 |
| 2008 | 3 | 9 |
| 2009 | 1 | 3 |
| 2010 | 4 | 3 |
| 2011 | 4 | 1 |
| 2012 | 2 | 8 |
| 2013 | 3 | 11 |
| 2014 | 4 | 8 |
| 2015 | 10 | 17 |
| 2016 | 8 | 4 |
| 2017 | 8 | 7 |
| 2018 | 13 | 17 |
| 2019 | 11 | 12 |
| 2020 | 15 | 11 |
| 2021 | 9 | 15 |
| 2022 | 16 | 3 |
| 2023 | 8 | 4 |
| 2024 | 6 | 4 |
| 2025 | 7 | 5 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F16L 25/026For flanged joints66
- F16L 25/021For screw-threaded joints39
- F16L 25/03In non-disconnectable pipe joints39
- F16L 25/023For joints in which sealing surfaces are pressed together by means of34
- F16L 25/025For joints with sleeve or socket28
- F16L 25/028For branching pipes, for joining pipes to walls7
Recent patents
- Non-metallic fluid coupling8 Sep 2026US 12,729,784 B2AdelWiggins Group, a division of TransDigm Inc.
- Dielectric ring gaskets and related methods and assemblies for detecting internal current transfer in a pipeline25 Aug 2026US 12,716,530 B2Focus Corrosion Inc.
- Insulation gasket with RTJ seal for RTJ flanges in high-pressure piping26 May 2026US 12,638,112 B2Delmon Industrial and Mechanical Insulation Factory Co.
- Gasket with electrical isolating coatings24 Feb 2026US 12,560,237 B2GPT Industries, LLC
- Dielectric union and method of assembling the same10 Feb 2026US 12,546,418 B1Red-White Valve Corp.
- Well pipe having electrical conductor with improved electrical contacts1 Oct 2026US 2026/0298379 A1
- Gasket with electrical isolating coatings3 Sep 2026US 2026/0258867 A1GPT Industries, LLC
- Pipe isolation joints for electrical isolation of heating tubes segments in electric impedance furnaces23 Jul 2026US 2026/0210464 A1Sabic Global Technologies B.V.
- Dielectric union and method of assembling the same9 Jul 2026US 2026/0194168 A1Red-White Valve Corp.
- Insulation gasket with rtj seal for rtj flanges in high-pressure piping2 Oct 2025US 2025/0305605 A1Delmon Industrial and Mechanical Insulation Factory Co.
Most cited
By later US patents
- Method for making a pipe coupling140US 4,011,652 APSI Products, Inc. · 1977
- Pipe joint103US 3,989,280 A1976
- Insulated drill collar gap sub assembly for a toroidal coupled telemetry system91US 4,496,174 ATele-Drill, Inc. · 1985
- Subassembly electrical isolation connector for drill rod65US 6,158,532 ARyan Energy Technologies · 2000
- Connector assembly for hot water heaters and other appliances58US 4,991,876 AEuroflex S.r.l. · 1991