G01N 27/18
Caused by changes in the thermal conductivity of a surrounding material to
Official title: caused by changes in the thermal conductivity of a surrounding material to be tested (G01N27/20 takes precedence)
G01N27/18 (Caused by changes in the thermal conductivity of a surrounding material to) appears on 327 US grants and 275 published applications in this corpus.
Search patents in G01N- Granted patents
- 327
- Published applications
- 275
- Assignees
- 188
- Inventors
- 649
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 5 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 6 | 0 |
| 1985 | 3 | 0 |
| 1986 | 6 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 6 | 0 |
| 1990 | 6 | 0 |
| 1991 | 9 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 8 | 0 |
| 1995 | 6 | 0 |
| 1996 | 5 | 0 |
| 1997 | 6 | 0 |
| 1998 | 6 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 2 |
| 2003 | 3 | 6 |
| 2004 | 5 | 8 |
| 2005 | 6 | 11 |
| 2006 | 8 | 6 |
| 2007 | 5 | 4 |
| 2008 | 6 | 7 |
| 2009 | 3 | 6 |
| 2010 | 1 | 11 |
| 2011 | 6 | 9 |
| 2012 | 10 | 7 |
| 2013 | 7 | 7 |
| 2014 | 4 | 11 |
| 2015 | 5 | 17 |
| 2016 | 12 | 13 |
| 2017 | 17 | 10 |
| 2018 | 8 | 13 |
| 2019 | 10 | 18 |
| 2020 | 11 | 14 |
| 2021 | 19 | 17 |
| 2022 | 17 | 17 |
| 2023 | 9 | 13 |
| 2024 | 13 | 15 |
| 2025 | 12 | 28 |
| 2026 | 13 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multi-film resistive gas sensor and system29 Sep 2026US 12,748,065 B2Kabushiki Kaisha Toshiba
- Detecting contamination of a cryogenic refrigerant in a cryogenic refrigeration system22 Sep 2026US 12,742,577 B2Edwards Vacuum LLC
- Electronic cigarette11 Aug 2026US 12,702,165 B2JT International SA
- Sensor for detecting at least one property of a fluid medium in at least one measuring chamber11 Aug 2026US 12,706,317 B2Robert Bosch GmbH
- Device and method for determining the thermal conductivity of a gas, tank arrangement and vehicle28 Jul 2026US 12,693,252 B2Ast (Advanced Sensor Technologies) International Asset GmbH
- Sensor device27 Aug 2026US 2026/0251604 A1TDK Corporation
- Gas sensor11 Jun 2026US 2026/0160724 A1TDK Corporation
- Thermal conductivity detection unit and gas chromatograph4 Jun 2026US 2026/0153469 A1Shimadzu Corporation
- Hybrid hydrogen sensor and method of controlling the same30 Apr 2026US 2026/0118333 A1Hyundai Motor Company
- Sensor8 Jan 2026US 2026/0009758 A1Kabushiki Kaisha Toshiba
Most cited
By later US patents
- Application of microsubstrates for materials processing117US 5,356,756 AThe United States of America as represented by the Secretary of Commerce · 1994
- Temperature-controlled, micromachined arrays for chemical sensor fabrication and operation91US 5,345,213 AThe United States of America as represented by the Secretary of Commerce · 1994
- Microscopic size, thermal conductivity type, air or gas absolute pressure sensor77US 4,682,503 AHoneywell Inc. · 1987
- Refrigerant deficiency detecting apparatus57US 4,167,858 ANippondenso Co., Ltd. · 1979
- Micro-hotplate devices and methods for their fabrication54US 5,464,966 AThe United States of America as represented by the Secretary of Commerce · 1995