G01N 25/50
Investigating or analyzing materials by the use of thermal means: by investigating
Official title: by investigating flash-point; by investigating explosibility
G01N25/50 (Investigating or analyzing materials by the use of thermal means: by investigating) appears on 115 US grants and 61 published applications in this corpus.
Search patents in G01N- Granted patents
- 115
- Published applications
- 61
- Assignees
- 88
- Inventors
- 313
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 7 | 1 |
| 2003 | 2 | 2 |
| 2004 | 1 | 1 |
| 2005 | 2 | 2 |
| 2006 | 2 | 4 |
| 2007 | 0 | 0 |
| 2008 | 3 | 2 |
| 2009 | 0 | 2 |
| 2010 | 3 | 3 |
| 2011 | 0 | 2 |
| 2012 | 2 | 1 |
| 2013 | 1 | 3 |
| 2014 | 3 | 3 |
| 2015 | 1 | 2 |
| 2016 | 1 | 2 |
| 2017 | 4 | 2 |
| 2018 | 1 | 3 |
| 2019 | 6 | 8 |
| 2020 | 7 | 5 |
| 2021 | 1 | 1 |
| 2022 | 3 | 6 |
| 2023 | 5 | 2 |
| 2024 | 2 | 1 |
| 2025 | 2 | 2 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Coal spontaneous combustion downhole detection system and method based on self-potential method14 Jul 2026US 12,681,203 B2Shandong University of Science and Technology
- Stirring apparatus for a flash point determination apparatus comprising a selectively removable stirring device30 Jun 2026US 12,669,456 B2Anton Paar ProveTec GmbH
- Large format-fractional thermal runaway calorimeter18 Mar 2025US 12,253,484 B1United States of America as represented by the Administrator of NASA
- Flame monitoring in a flash point determination or combustion point determination14 Jan 2025US 12,196,694 B2Anton Paar ProveTec GmbH
- System, method and apparatus for testing and evaluating flame resistance10 Dec 2024US 12,163,907 B2Valmont Industries, Inc.
- Test Chamber and Control Method22 Jan 2026US 2026/0023038 A1
- Coal Spontaneous Combustion Downhole Detection System and Method Based on Self-Potential Method17 Apr 2025US 2025/0123418 A1Shandong University of Science and Technology
- Flame Test Method23 Jan 2025US 2025/0027894 A1Avery Dennison Corporation
- Autoignition systems to measure autignition temperatures and related methods1 Aug 2024US 2024/0255453 A1Brigham Young University
- Thermal runaway pin-point heating test30 Mar 2023US 2023/0100761 A1Lenovo (United States) Inc.
Most cited
By later US patents
- Method and apparatus for determining the Wobbe index of gaseous fuels62US 4,359,284 AHoneywell Inc. · 1982
- Process and apparatus for the combustionless measurement and/or control of the amount of heat fed to gas consumption devices28US 4,384,792 ARuhrgas Aktiengesellschaft · 1983
- Apparatus for determining the explosion limits of a flammable gas26US 4,140,004 AStauffer Chemical Company · 1979
- Method and apparatus for the automated testing of the flash point26US 5,869,343 APetrotest Instruments GmbH & Co. KG · 1999
- Ignitability test method and apparatus23US 5,052,817 AThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 1991