G01M 3/005
Investigating fluid-tightness of structures: using pigs or moles
Official title: {using pigs or moles (G01M3/246, G01M3/2823 take precedence)}
G01M3/005 (Investigating fluid-tightness of structures: using pigs or moles) appears on 278 US grants and 198 published applications in this corpus.
Search patents in G01M- Granted patents
- 278
- Published applications
- 198
- Assignees
- 195
- Inventors
- 706
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 7 | 0 |
| 1978 | 8 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 8 | 0 |
| 1984 | 5 | 0 |
| 1985 | 6 | 0 |
| 1986 | 6 | 0 |
| 1987 | 8 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 3 |
| 2003 | 2 | 2 |
| 2004 | 2 | 6 |
| 2005 | 2 | 5 |
| 2006 | 5 | 2 |
| 2007 | 1 | 0 |
| 2008 | 3 | 5 |
| 2009 | 1 | 2 |
| 2010 | 3 | 0 |
| 2011 | 2 | 4 |
| 2012 | 3 | 6 |
| 2013 | 1 | 12 |
| 2014 | 9 | 11 |
| 2015 | 7 | 8 |
| 2016 | 10 | 12 |
| 2017 | 7 | 4 |
| 2018 | 11 | 6 |
| 2019 | 8 | 22 |
| 2020 | 14 | 16 |
| 2021 | 15 | 9 |
| 2022 | 10 | 9 |
| 2023 | 7 | 13 |
| 2024 | 15 | 14 |
| 2025 | 14 | 16 |
| 2026 | 9 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- A device for detecting blockages in water pipes, and a method for detecting blockages by means of such a device20 Aug 2026US 2026/0243382 A1Aganova S.L.
- Device, system and method for locating and repairing leaks in pipes6 Aug 2026US 2026/0227021 A1South East Water Corporation
- Modular inline inspection vehicle9 Jul 2026US 2026/0194408 A1DarkVision Technologies Inc.
- Method and kit of parts for determining a position of a leak in a conduit2 Jul 2026US 2026/0185892 A1Preventum Innovations AB
Most cited
By later US patents
- Modular observation crawler and sensing instrument and method for operating same200US 6,450,104 B1North Carolina State University · 2002
- Gas main robotic inspection system178US 6,917,176 B2Carnegie Mellon University · 2005
- Pneumatic pipe inspection device150US 4,646,787 AInstitute of Gas Technology · 1987
- Self-driving and self-locking device for traversing channels and elongated structures140US 4,085,808 A1978
- Intrapipe work robot apparatus and method of measuring position of intrapipe work robot128US 5,736,821 ATokyo Gas Co., Ltd. · 1998