G01M 3/20
Using special tracer materials
Official title: using special tracer materials, e.g. dye, fluorescent material, radioactive material
G01M3/20 (Using special tracer materials) appears on 1,390 US grants and 1,171 published applications in this corpus.
Search patents in G01M- Granted patents
- 1,390
- Published applications
- 1,171
- Assignees
- 786
- Inventors
- 2,780
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 6 | 0 |
| 1978 | 3 | 0 |
| 1979 | 11 | 0 |
| 1980 | 16 | 0 |
| 1981 | 9 | 0 |
| 1982 | 12 | 0 |
| 1983 | 12 | 0 |
| 1984 | 15 | 0 |
| 1985 | 17 | 0 |
| 1986 | 18 | 0 |
| 1987 | 23 | 0 |
| 1988 | 25 | 0 |
| 1989 | 15 | 0 |
| 1990 | 19 | 0 |
| 1991 | 26 | 0 |
| 1992 | 20 | 0 |
| 1993 | 19 | 0 |
| 1994 | 36 | 0 |
| 1995 | 15 | 0 |
| 1996 | 22 | 0 |
| 1997 | 23 | 0 |
| 1998 | 23 | 0 |
| 1999 | 31 | 0 |
| 2000 | 26 | 0 |
| 2001 | 32 | 3 |
| 2002 | 24 | 16 |
| 2003 | 31 | 25 |
| 2004 | 18 | 36 |
| 2005 | 17 | 29 |
| 2006 | 23 | 32 |
| 2007 | 25 | 33 |
| 2008 | 20 | 49 |
| 2009 | 20 | 38 |
| 2010 | 36 | 33 |
| 2011 | 19 | 43 |
| 2012 | 29 | 32 |
| 2013 | 28 | 38 |
| 2014 | 32 | 38 |
| 2015 | 31 | 51 |
| 2016 | 32 | 56 |
| 2017 | 40 | 49 |
| 2018 | 47 | 60 |
| 2019 | 51 | 59 |
| 2020 | 51 | 62 |
| 2021 | 55 | 60 |
| 2022 | 60 | 85 |
| 2023 | 51 | 64 |
| 2024 | 55 | 74 |
| 2025 | 56 | 54 |
| 2026 | 50 | 52 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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
- System for detecting leaked gas from containers29 Sep 2026US 12,748,010 B2Ft System S.R.L.
- Equipment inspection system22 Sep 2026US 12,742,698 B2SMC Corporation
- Swimming pool light and drain leak detection devices15 Sep 2026US 12,736,430 B2
- Gaseous leak detection system and associated methods8 Oct 2026US 2026/0309573 A1TrelliSense, Inc.
- Rainwater mixed connection traceability monitoring device and using method therefor1 Oct 2026US 2026/0298761 A1Three Gorges Smart Water Technology Co., Ltd
- Methods and apparatus for managing a hydrogen storage and distribution system1 Oct 2026US 2026/0301885 A1General Electric Company
- Leak detection system for battery cells1 Oct 2026US 2026/0302377 A1GM Global Technology Operations LLC
- Plumbing Leak Containment, Indicator, & Detection Device and Method for Detecting a Plumbing System Leak & Preventing Structural Damage24 Sep 2026US 2026/0287461 A1
Most cited
By later US patents
- Method and system for stent delivery427US 5,242,399 AAdvanced Cardiovascular Systems, Inc. · 1993
- Method and system to locate leaks in subsurface containment structures using tracer gases220US 6,035,701 A2000
- Tubular feedthrough system for hermetically sealed devices212US 5,843,140 AAlfred E. Mann Foundation for Scientific Research · 1998
- Method of forming a tubular feed-through hermetic seal for an implantable medical device189US 5,640,764 AAlfred E. Mann Foundation for Scientific Research · 1997
- Alkali metal leak detection method and apparatus188US 3,969,077 AVarian Associates, Inc. · 1976