G05D 23/20
With sensing elements having variation of electric or magnetic properties with change
Official title: with sensing elements having variation of electric or magnetic properties with change of temperature (G05D23/13 takes precedence)
G05D23/20 (With sensing elements having variation of electric or magnetic properties with change) appears on 1,933 US grants and 852 published applications in this corpus.
Search patents in G05D- Granted patents
- 1,933
- Published applications
- 852
- Assignees
- 967
- Inventors
- 3,383
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 56 | 0 |
| 1977 | 45 | 0 |
| 1978 | 59 | 0 |
| 1979 | 33 | 0 |
| 1980 | 64 | 0 |
| 1981 | 67 | 0 |
| 1982 | 87 | 0 |
| 1983 | 73 | 0 |
| 1984 | 86 | 0 |
| 1985 | 87 | 0 |
| 1986 | 51 | 0 |
| 1987 | 80 | 0 |
| 1988 | 67 | 0 |
| 1989 | 74 | 0 |
| 1990 | 50 | 0 |
| 1991 | 48 | 0 |
| 1992 | 45 | 0 |
| 1993 | 39 | 0 |
| 1994 | 50 | 0 |
| 1995 | 43 | 0 |
| 1996 | 30 | 0 |
| 1997 | 22 | 0 |
| 1998 | 21 | 0 |
| 1999 | 12 | 0 |
| 2000 | 9 | 0 |
| 2001 | 13 | 3 |
| 2002 | 12 | 13 |
| 2003 | 10 | 13 |
| 2004 | 11 | 12 |
| 2005 | 14 | 21 |
| 2006 | 11 | 22 |
| 2007 | 12 | 20 |
| 2008 | 11 | 28 |
| 2009 | 13 | 31 |
| 2010 | 20 | 26 |
| 2011 | 19 | 29 |
| 2012 | 25 | 25 |
| 2013 | 16 | 28 |
| 2014 | 24 | 34 |
| 2015 | 25 | 20 |
| 2016 | 23 | 32 |
| 2017 | 20 | 29 |
| 2018 | 36 | 108 |
| 2019 | 50 | 51 |
| 2020 | 53 | 51 |
| 2021 | 37 | 37 |
| 2022 | 35 | 61 |
| 2023 | 40 | 53 |
| 2024 | 45 | 48 |
| 2025 | 43 | 35 |
| 2026 | 17 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Technique for adjusting charging operation or discharging operation of external device by battery pack15 Sep 2026US 12,738,551 B2Makita Corporation
- In-vehicle device temperature adjustment apparatus21 Jul 2026US 12,686,248 B2Mikuni Corporation
- Systems and controllers for controlling heating unit temperature with a simulated outdoor temperature, and methods using the same30 Jun 2026US 12,669,249 B2Watts Regulator Co.
- On-device low power, rapid response heaters for device calibration processes9 Jun 2026US 12,650,705 B2Texas Instruments Incorporated
- Devices for evaporation and inhalation of nicotine26 May 2026US 12,636,446 B2Emplicure AB
- On-device low power, rapid response heaters for device calibration processes24 Sep 2026US 2026/0288178 A1Texas Instruments Incorporated
- Electronic smoking device, heating method thereof and computer storage media3 Sep 2026US 2026/0256213 A1Shenzhen Merit Technology Co., Ltd.
- Temperature control device and temperature control method27 Aug 2026US 2026/0252130 A1Sony Thermo Technology Inc.
- Remote temperature sensor circuit and method20 Aug 2026US 2026/0244228 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Aerosol generating apparatus30 Jul 2026US 2026/0215517 A1Imperial Tobacco Limited
Most cited
By later US patents
- Smart temperature measuring device470US 9,297,705 B2ASM America, Inc. · 2016
- Method and apparatus for calibrating and controlling multiple heaters276US 5,280,422 AWatlow/Winona, Inc. · 1994
- Electronic programmable thermostat232US 4,751,961 AHoneywell Inc. · 1988
- Medical apparatus for warming patient fluids223US 5,875,282 AGaymar Industries, Inc. · 1999
- Electronic thermostat with repetitive operation cycle202US 4,335,847 A1982