G01M 3/04
By detecting the presence of fluid at the leakage point
Official title: by detecting the presence of fluid at the leakage point
G01M3/04 (By detecting the presence of fluid at the leakage point) appears on 3,943 US grants and 3,620 published applications in this corpus.
Search patents in G01M- Granted patents
- 3,943
- Published applications
- 3,620
- Assignees
- 2,082
- Inventors
- 8,259
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 37 | 0 |
| 1977 | 26 | 0 |
| 1978 | 23 | 0 |
| 1979 | 23 | 0 |
| 1980 | 25 | 0 |
| 1981 | 22 | 0 |
| 1982 | 26 | 0 |
| 1983 | 27 | 0 |
| 1984 | 31 | 0 |
| 1985 | 41 | 0 |
| 1986 | 38 | 0 |
| 1987 | 48 | 0 |
| 1988 | 43 | 0 |
| 1989 | 51 | 0 |
| 1990 | 53 | 0 |
| 1991 | 52 | 0 |
| 1992 | 55 | 0 |
| 1993 | 56 | 0 |
| 1994 | 76 | 0 |
| 1995 | 57 | 0 |
| 1996 | 63 | 0 |
| 1997 | 54 | 0 |
| 1998 | 51 | 0 |
| 1999 | 69 | 0 |
| 2000 | 60 | 0 |
| 2001 | 60 | 10 |
| 2002 | 51 | 43 |
| 2003 | 60 | 52 |
| 2004 | 50 | 80 |
| 2005 | 42 | 68 |
| 2006 | 58 | 61 |
| 2007 | 44 | 65 |
| 2008 | 35 | 97 |
| 2009 | 43 | 70 |
| 2010 | 75 | 89 |
| 2011 | 38 | 97 |
| 2012 | 62 | 94 |
| 2013 | 75 | 117 |
| 2014 | 88 | 119 |
| 2015 | 85 | 165 |
| 2016 | 98 | 145 |
| 2017 | 133 | 158 |
| 2018 | 143 | 210 |
| 2019 | 185 | 226 |
| 2020 | 213 | 251 |
| 2021 | 210 | 228 |
| 2022 | 210 | 253 |
| 2023 | 203 | 236 |
| 2024 | 214 | 257 |
| 2025 | 198 | 219 |
| 2026 | 163 | 210 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G01M 3/20Using special tracer materials1,390
- G01M 3/16Using electric detection means1,197
- G01M 3/24Using infrasonic, sonic or ultrasonic vibrations800
- G01M 3/042By using materials which expand, contract, disintegrate, or decompose in contact with389
- G01M 3/06By observing bubbles in a liquid pool121
- G01M 3/12By observing elastic covers or coatings71
Recent patents
- System for monitoring the integrity of a roof6 Oct 2026US 12,754,094 B2RAM Companies, LLC
- Gas leak detection device and gas leak detection method for identifying a gas leak in a test object6 Oct 2026US 12,754,095 B2Inficon GmbH
- Leak detection device6 Oct 2026US 12,754,096 B2Inficon GmbH
- Valve seat inspection method and valve seat inspection device using image recognition camera29 Sep 2026US 12,748,008 B2Kitz Corporation
- Automated and wireless accelerated heat treat life testing system29 Sep 2026US 12,748,009 B2UIF (University Industry Foundation), Yonsei University
- Heat exchanger state sensing apparatus and method of use thereof8 Oct 2026US 2026/0309435 A1
- System and method for colorimetric detection of gas leaks8 Oct 2026US 2026/0309570 A1
- Method and system for detecting gas in battery packs8 Oct 2026US 2026/0309571 A1Samsung SDI.Co., Ltd.
- Gas Monitoring System and Method(s) of Use8 Oct 2026US 2026/0309572 A1
- Gaseous leak detection system and associated methods8 Oct 2026US 2026/0309573 A1TrelliSense, Inc.
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 pumping systems, devices and methods254US 8,292,594 B2DEKA Products Limited Partnership · 2012