G01M 3/022
Test plugs for closing off the end of a pipe
Official title: {Test plugs for closing off the end of a pipe}
G01M3/022 (Test plugs for closing off the end of a pipe) appears on 245 US grants and 169 published applications in this corpus.
Search patents in G01M- Granted patents
- 245
- Published applications
- 169
- Assignees
- 123
- Inventors
- 371
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 7 | 0 |
| 1984 | 7 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 5 | 0 |
| 1988 | 7 | 0 |
| 1989 | 5 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 8 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 5 | 7 |
| 2003 | 10 | 4 |
| 2004 | 3 | 4 |
| 2005 | 6 | 3 |
| 2006 | 3 | 2 |
| 2007 | 5 | 4 |
| 2008 | 1 | 8 |
| 2009 | 2 | 5 |
| 2010 | 3 | 6 |
| 2011 | 4 | 5 |
| 2012 | 4 | 6 |
| 2013 | 4 | 3 |
| 2014 | 7 | 8 |
| 2015 | 7 | 10 |
| 2016 | 8 | 6 |
| 2017 | 7 | 7 |
| 2018 | 4 | 9 |
| 2019 | 11 | 10 |
| 2020 | 13 | 15 |
| 2021 | 17 | 13 |
| 2022 | 7 | 9 |
| 2023 | 12 | 9 |
| 2024 | 9 | 8 |
| 2025 | 3 | 7 |
| 2026 | 6 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Systems and methods for analyzing and displaying acoustic data20 Jan 2026US 12,529,789 B2Fluke Corporation
- Ground detection technology for pipe damage based on alternating electromagnetic excitation10 Sep 2026US 2026/0267027 A1Southwest Petroleum University
- Low marking gripper for a hydrostatic test and isolation plug25 Dec 2025US 2025/0389607 A1EST Group, Inc.
- Systems and methods for detachable and attachable acoustic imaging sensors4 Dec 2025US 2025/0370128 A1Fluke Corporation
- Systems and methods for projecting and displaying acoustic data6 Nov 2025US 2025/0341635 A1Fluke Corporation
- Sealing clamp assembly and method for clearing and leak testing fuel lines of gas turbine fuel supply system7 Aug 2025US 2025/0251074 A1GE Infrastructure Technology LLC
Most cited
By later US patents
- Test fitting121US 4,887,646 AThe Boeing Company · 1989
- Hydraulic chuck111US 5,156,043 AAir-Mo Hydraulics, Inc. · 1992
- Permanently-installed test fitting69US 4,602,504 A1986
- Plug member used in hydraulic testing of plumbing system61US 4,763,510 A1988
- Sealing disc used in hydraulic testing of plumbing system59US 5,507,501 A1996