G01M 3/2853
For pipe joints or seals
Official title: {for pipe joints or seals (G01M3/30 takes precedence)}
G01M3/2853 (For pipe joints or seals) appears on 354 US grants and 249 published applications in this corpus.
Search patents in G01M- Granted patents
- 354
- Published applications
- 249
- Assignees
- 241
- Inventors
- 662
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 9 | 0 |
| 1979 | 5 | 0 |
| 1980 | 8 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 7 | 0 |
| 1984 | 8 | 0 |
| 1985 | 5 | 0 |
| 1986 | 9 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 7 | 0 |
| 1994 | 7 | 0 |
| 1995 | 9 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 6 | 0 |
| 2001 | 6 | 1 |
| 2002 | 7 | 4 |
| 2003 | 9 | 6 |
| 2004 | 4 | 5 |
| 2005 | 0 | 4 |
| 2006 | 6 | 1 |
| 2007 | 3 | 6 |
| 2008 | 3 | 4 |
| 2009 | 5 | 3 |
| 2010 | 3 | 5 |
| 2011 | 5 | 3 |
| 2012 | 3 | 4 |
| 2013 | 0 | 10 |
| 2014 | 9 | 12 |
| 2015 | 7 | 18 |
| 2016 | 11 | 19 |
| 2017 | 13 | 11 |
| 2018 | 15 | 11 |
| 2019 | 13 | 20 |
| 2020 | 16 | 18 |
| 2021 | 13 | 14 |
| 2022 | 13 | 17 |
| 2023 | 13 | 15 |
| 2024 | 22 | 14 |
| 2025 | 15 | 12 |
| 2026 | 9 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Equipment inspection system22 Sep 2026US 12,742,698 B2SMC Corporation
- Gas seal testing system25 Aug 2026US 12,716,311 B1
- Leak testing apparatus4 Aug 2026US 12,699,021 B2Vestas Aircoil A/S
- External pressure testing fixture for tubing unions14 Jul 2026US 12,680,904 B2Halliburton Energy Services.Inc.
- Performance testing device for piston rod sealing assembly16 Jun 2026US 12,656,220 B2Tsinghua University
- Defective point estimation method and liquid chromatograph20 Aug 2026US 2026/0243738 A1Hitachi High-Tech Corporation
- Disengagement test system and method for a pump13 Aug 2026US 2026/0235129 A1Xi'an Space Engine Company Limited
- Jig and method for detecting misassembly of gasket13 Aug 2026US 2026/0235469 A1Yazaki Corporation
- Auto test circuit using an intensifier6 Aug 2026US 2026/0227272 A1FMC Technologies, Inc.
- Interrogative programming assisted leak testing6 Aug 2026US 2026/0227273 A1Uson Corporation
Most cited
By later US patents
- Apparatus and method for detecting fluid leakage71US 5,170,659 AKemp Development Corporation · 1992
- Permanently-installed test fitting69US 4,602,504 A1986
- Methods and apparatus using a gel to isolate mainline valves in a pipeline during a hydrotest67US 5,197,324 ADowell Schlumberger Incorporated · 1993
- Apparatus and method for externally testing conduit connections62US 4,019,371 AExxon Production Research Company · 1977
- Sealing system for pressurized flanged joints52US 4,410,186 APetroleum Designers, Inc. · 1983