G01N 2291/025
Change of phase or condition
G01N2291/025 (Change of phase or condition) appears on 2,004 US grants and 2,102 published applications in this corpus.
Search patents in G01N- Granted patents
- 2,004
- Published applications
- 2,102
- Assignees
- 1,117
- Inventors
- 4,847
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 5 | 0 |
| 1981 | 5 | 0 |
| 1982 | 6 | 0 |
| 1983 | 5 | 0 |
| 1984 | 7 | 0 |
| 1985 | 9 | 0 |
| 1986 | 15 | 0 |
| 1987 | 9 | 0 |
| 1988 | 16 | 0 |
| 1989 | 7 | 0 |
| 1990 | 11 | 0 |
| 1991 | 12 | 0 |
| 1992 | 13 | 0 |
| 1993 | 13 | 0 |
| 1994 | 13 | 0 |
| 1995 | 21 | 0 |
| 1996 | 21 | 0 |
| 1997 | 23 | 0 |
| 1998 | 29 | 0 |
| 1999 | 30 | 0 |
| 2000 | 26 | 0 |
| 2001 | 38 | 7 |
| 2002 | 39 | 38 |
| 2003 | 45 | 50 |
| 2004 | 27 | 54 |
| 2005 | 46 | 67 |
| 2006 | 39 | 96 |
| 2007 | 57 | 85 |
| 2008 | 49 | 80 |
| 2009 | 51 | 77 |
| 2010 | 59 | 94 |
| 2011 | 53 | 63 |
| 2012 | 73 | 72 |
| 2013 | 67 | 44 |
| 2014 | 48 | 57 |
| 2015 | 42 | 85 |
| 2016 | 46 | 74 |
| 2017 | 69 | 118 |
| 2018 | 61 | 120 |
| 2019 | 123 | 134 |
| 2020 | 109 | 130 |
| 2021 | 105 | 118 |
| 2022 | 107 | 129 |
| 2023 | 109 | 128 |
| 2024 | 118 | 85 |
| 2025 | 75 | 59 |
| 2026 | 44 | 38 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G01N 2291/0256Adsorption, desorption, surface mass changeIndexing code983
- G01N 2291/0258Structural degradationIndexing code731
- G01N 2291/0255Chemical reactionsIndexing code447
- G01N 2291/0251Solidification, icing, curing composites, polymerisationIndexing code196
- G01N 2291/0252Melting, molten solidsIndexing code37
- G01N 2291/0253CondensationIndexing code15
- G01N 2291/0254EvaporationIndexing code12
Recent patents
- Apparatus for determining damage on structural components and work machine comprising such an apparatus15 Sep 2026US 12,736,440 B2Liebherr-Components Biberach GmbH
- Method and system for ultrasound time-of-flight measurement8 Sep 2026US 12,730,218 B2Texas Instruments Incorporated
- High-temperature and high-pressure speed of sound apparatus and measuring the speed of sound in a sample at high-temperature and high-pressure28 Jul 2026US 12,693,266 B2Government of the United States of America, AS Represented By the Secretary of Commerce
- System for monitoring containers or pipes in which at least two phases or at least two media of one phase in the form of a liquid, a gas and/or a solid are stored or transported together28 Jul 2026US 12,693,270 B2Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Door fault identification28 Jul 2026US 12,693,272 B2Schlage Lock Company LLC
- Electromagnetic acoustic transducer (emat) for inspection17 Sep 2026US 2026/0276599 A1Evident Canada, Inc.
- Solidly-mounted acoustic biosensor17 Sep 2026US 2026/0276601 A1Resonatia Diagnostics
- Surface acoustic wave facilitated fluidic assay systems and methods17 Sep 2026US 2026/0276630 A1
- Frequency domain monitoring of state of batteries via a piezoelectric element17 Sep 2026US 2026/0276722 A2California Institute of Technology
- Device for detection of btex using a polymer with fluorobenzyl groups3 Sep 2026US 2026/0259174 A1Centre National De La Recherche Scientifique
Most cited
By later US patents
- Machine fault diagnostics system and method466US 5,566,092 ACaterpillar Inc. · 1996
- Microfabricated reactor427US 5,639,423 AThe Regents of the University of Calfornia · 1997
- Microfabricated reactor293US 5,674,742 AThe Regents of the University of California · 1997
- Sensor arrangement having sensor array provided on upper portion of a container261US 7,387,010 B2Smiths Detection Inc. · 2008
- Microfabricated reactor241US 5,646,039 AThe Regents of the University of California · 1997