G01M 3/02
Investigating fluid-tightness of structures: by using fluid or vacuum
Official title: by using fluid or vacuum
G01M3/02 (Investigating fluid-tightness of structures: by using fluid or vacuum) appears on 7,399 US grants and 6,485 published applications in this corpus.
Search patents in G01M- Granted patents
- 7,399
- Published applications
- 6,485
- Assignees
- 3,536
- Inventors
- 14,748
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 76 | 0 |
| 1977 | 61 | 0 |
| 1978 | 65 | 0 |
| 1979 | 54 | 0 |
| 1980 | 53 | 0 |
| 1981 | 48 | 0 |
| 1982 | 56 | 0 |
| 1983 | 67 | 0 |
| 1984 | 75 | 0 |
| 1985 | 84 | 0 |
| 1986 | 83 | 0 |
| 1987 | 96 | 0 |
| 1988 | 89 | 0 |
| 1989 | 118 | 0 |
| 1990 | 104 | 0 |
| 1991 | 98 | 0 |
| 1992 | 117 | 0 |
| 1993 | 114 | 0 |
| 1994 | 149 | 0 |
| 1995 | 102 | 0 |
| 1996 | 116 | 0 |
| 1997 | 91 | 0 |
| 1998 | 97 | 0 |
| 1999 | 118 | 0 |
| 2000 | 110 | 0 |
| 2001 | 102 | 26 |
| 2002 | 104 | 75 |
| 2003 | 118 | 113 |
| 2004 | 89 | 137 |
| 2005 | 99 | 122 |
| 2006 | 105 | 116 |
| 2007 | 89 | 134 |
| 2008 | 73 | 181 |
| 2009 | 93 | 137 |
| 2010 | 124 | 170 |
| 2011 | 90 | 167 |
| 2012 | 111 | 167 |
| 2013 | 133 | 218 |
| 2014 | 152 | 242 |
| 2015 | 177 | 283 |
| 2016 | 204 | 292 |
| 2017 | 248 | 303 |
| 2018 | 258 | 401 |
| 2019 | 370 | 389 |
| 2020 | 366 | 448 |
| 2021 | 353 | 412 |
| 2022 | 377 | 451 |
| 2023 | 364 | 392 |
| 2024 | 384 | 423 |
| 2025 | 332 | 359 |
| 2026 | 243 | 327 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G01M 3/04By detecting the presence of fluid at the leakage point3,943
- G01M 3/26By measuring rate of loss or gain of fluid3,541
- G01M 3/022Test plugs for closing off the end of a pipe245
- G01M 3/025Details with respect to the testing of engines or engine parts242
- G01M 3/36By detecting change in dimensions of the structure being tested230
- G01M 3/027Details with respect to the testing of elastic elements45
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Most cited
By later US patents
- Method and system for stent delivery427US 5,242,399 AAdvanced Cardiovascular Systems, Inc. · 1993
- Sonic apparatus and method for detecting the presence of a gaseous substance in a closed space355US 4,574,615 AThe Babcock & Wilcox Company · 1986
- Water detection system and method338US 6,683,535 B1Alderon Industries, LLC · 2004
- Thermal and coductivity sensing systems, devices and methods316US 7,794,141 B2DEKA Products Limited Partnership · 2010
- Fluid control system for a medical device277US 8,206,345 B2Medtronic CryoCath LP · 2012