G05D 23/02
With sensing element expanding and contracting in response to changes of temperature
Official title: with sensing element expanding and contracting in response to changes of temperature (G05D23/13 takes precedence)
G05D23/02 (With sensing element expanding and contracting in response to changes of temperature) appears on 671 US grants and 428 published applications in this corpus.
Search patents in G05D- Granted patents
- 671
- Published applications
- 428
- Assignees
- 324
- Inventors
- 1,064
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 15 | 0 |
| 1978 | 9 | 0 |
| 1979 | 16 | 0 |
| 1980 | 16 | 0 |
| 1981 | 20 | 0 |
| 1982 | 12 | 0 |
| 1983 | 16 | 0 |
| 1984 | 18 | 0 |
| 1985 | 10 | 0 |
| 1986 | 9 | 0 |
| 1987 | 5 | 0 |
| 1988 | 8 | 0 |
| 1989 | 8 | 0 |
| 1990 | 10 | 0 |
| 1991 | 13 | 0 |
| 1992 | 18 | 0 |
| 1993 | 16 | 0 |
| 1994 | 7 | 0 |
| 1995 | 13 | 0 |
| 1996 | 14 | 0 |
| 1997 | 10 | 0 |
| 1998 | 11 | 0 |
| 1999 | 20 | 0 |
| 2000 | 9 | 0 |
| 2001 | 6 | 1 |
| 2002 | 9 | 13 |
| 2003 | 11 | 8 |
| 2004 | 10 | 10 |
| 2005 | 6 | 14 |
| 2006 | 9 | 13 |
| 2007 | 6 | 20 |
| 2008 | 4 | 12 |
| 2009 | 7 | 16 |
| 2010 | 12 | 16 |
| 2011 | 10 | 19 |
| 2012 | 10 | 12 |
| 2013 | 12 | 22 |
| 2014 | 13 | 22 |
| 2015 | 12 | 31 |
| 2016 | 22 | 27 |
| 2017 | 26 | 28 |
| 2018 | 36 | 26 |
| 2019 | 28 | 19 |
| 2020 | 28 | 27 |
| 2021 | 17 | 14 |
| 2022 | 13 | 17 |
| 2023 | 17 | 8 |
| 2024 | 18 | 17 |
| 2025 | 14 | 12 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Thermostatic valve having a sleeve6 Oct 2026US 12,754,573 B2Vernet
- Proportional control drive mechanism21 Jul 2026US 12,687,236 B2Illinois Tool Works Inc.
- Circulation pump, system and method for domestic hot-water recirculation14 Jul 2026US 12,680,280 B2Grundfos Holding A/S
- Cartridge for dynamic reduction of a pressure of a fluid and related device for treating a fluid30 Jun 2026US 12,669,190 B2I.V.A.R. S.P.A.
- Thermostat with flow regulators18 Nov 2025US 12,473,992 B2Stant USA Corp.
- Thermostat device25 Jun 2026US 2026/0177153 A1
- Thermostatic valve having a sleeve7 May 2026US 2026/0126820 A1Vernet
- On-demand flow rate adapter for flow rate adjustment in liquid cooling solutions23 Apr 2026US 2026/0111048 A1Cisco Technology, Inc.
- Gas Turbine Engine Inlet Anti-Ice System26 Mar 2026US 2026/0085639 A1Honeywell International Inc.
- On-demand flow rate adapter for flow rate adjustment in liquid cooling solutions24 Jul 2025US 2025/0238046 A1Cisco Technology, Inc.
Most cited
By later US patents
- Proportional valve with shape memory alloy actuator143US 6,840,257 B22005
- Temperature responsive line valve106US 4,778,104 AMemory Metals, Inc. · 1988
- Temperature regulating, pressure relief flow valves employing shaped memory alloys102US 4,570,851 A1986
- Thermal relief valve78US 5,018,665 AHale Fire Pump Company · 1991
- Thermal actuated valve for clearance control67US 3,966,354 AGeneral Electric Company · 1976