G01K 5/00
Measuring temperature based on the expansion or contraction of a material
Official title: Measuring temperature based on the expansion or contraction of a material (G01K9/00 takes precedence; giving other than momentary value of temperature G01K3/00)
G01K5/00 (Measuring temperature based on the expansion or contraction of a material) appears on 555 US grants and 372 published applications in this corpus.
Search patents in G01K- Granted patents
- 555
- Published applications
- 372
- Assignees
- 374
- Inventors
- 1,075
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 23 | 0 |
| 1977 | 17 | 0 |
| 1978 | 20 | 0 |
| 1979 | 12 | 0 |
| 1980 | 12 | 0 |
| 1981 | 10 | 0 |
| 1982 | 9 | 0 |
| 1983 | 6 | 0 |
| 1984 | 11 | 0 |
| 1985 | 9 | 0 |
| 1986 | 11 | 0 |
| 1987 | 16 | 0 |
| 1988 | 6 | 0 |
| 1989 | 8 | 0 |
| 1990 | 4 | 0 |
| 1991 | 9 | 0 |
| 1992 | 7 | 0 |
| 1993 | 8 | 0 |
| 1994 | 9 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 6 | 0 |
| 1998 | 15 | 0 |
| 1999 | 7 | 0 |
| 2000 | 6 | 0 |
| 2001 | 7 | 3 |
| 2002 | 5 | 6 |
| 2003 | 7 | 11 |
| 2004 | 11 | 10 |
| 2005 | 7 | 9 |
| 2006 | 8 | 21 |
| 2007 | 12 | 16 |
| 2008 | 11 | 14 |
| 2009 | 14 | 21 |
| 2010 | 6 | 7 |
| 2011 | 15 | 21 |
| 2012 | 14 | 15 |
| 2013 | 12 | 15 |
| 2014 | 16 | 21 |
| 2015 | 19 | 20 |
| 2016 | 8 | 8 |
| 2017 | 14 | 12 |
| 2018 | 10 | 20 |
| 2019 | 12 | 21 |
| 2020 | 22 | 24 |
| 2021 | 16 | 20 |
| 2022 | 16 | 13 |
| 2023 | 11 | 15 |
| 2024 | 17 | 11 |
| 2025 | 11 | 9 |
| 2026 | 4 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Structural temperature self-monitoring system based on chiral structured shape memory polymer28 Apr 2026US 12,613,146 B2Zhejiang University
- Powder bed fusion build plate thermal history indicator14 Apr 2026US 12,599,969 B2Rtx Corporation
- Extreme ultraviolet source temperature monitoring using confocal sensor10 Mar 2026US 12,572,066 B2KLA Corporation
- System for measuring shutdown temperature and meltdown temperature of separator27 Jan 2026US 12,535,361 B2LG Energy Solution, Ltd.
- MEMS thermal sensor array23 Sep 2025US 12,422,307 B2
- Phase otdr27 Aug 2026US 2026/0251508 A1NTT, Inc.
- State determination method20 Aug 2026US 2026/0242860 A1Yokogawa Electric Corporation
- Non-reversibly activatable temperature extremum indication device13 Aug 2026US 2026/0235450 A1
- Quantum sensor and method for fabricating the same2 Jul 2026US 2026/0185854 A1Electronics and Telecommunications Research Institute
- Temperature-measuring device and temperature-measuring method11 Jun 2026US 2026/0160611 A1Jfe Steel Corporation
Most cited
By later US patents
- Wireless event-recording device with identification codes1,687US 6,806,808 B1SRI International · 2004
- Shape memory polymers676US 6,388,043 B1Mnemoscience GmbH · 2002
- Shape memory polymers430US 6,720,402 B2Mnemoscience GmbH · 2004
- Event-recording devices with identification codes239US 6,617,963 B1SRI International · 2003
- Temperature monitoring device containing at least one element of an alloy which memorizes its shape187US 5,143,453 AG.I.R. · 1992