F25B 21/04
Reversible
Official title: reversible
F25B21/04 (Reversible) appears on 761 US grants and 928 published applications in this corpus.
Search patents in F25B- Granted patents
- 761
- Published applications
- 928
- Assignees
- 459
- Inventors
- 1,592
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 10 | 0 |
| 1997 | 9 | 0 |
| 1998 | 11 | 0 |
| 1999 | 13 | 0 |
| 2000 | 11 | 0 |
| 2001 | 14 | 6 |
| 2002 | 22 | 18 |
| 2003 | 22 | 19 |
| 2004 | 15 | 20 |
| 2005 | 7 | 21 |
| 2006 | 13 | 26 |
| 2007 | 11 | 19 |
| 2008 | 8 | 27 |
| 2009 | 7 | 16 |
| 2010 | 11 | 31 |
| 2011 | 12 | 15 |
| 2012 | 12 | 23 |
| 2013 | 17 | 54 |
| 2014 | 16 | 50 |
| 2015 | 21 | 43 |
| 2016 | 44 | 49 |
| 2017 | 44 | 71 |
| 2018 | 54 | 69 |
| 2019 | 50 | 55 |
| 2020 | 53 | 47 |
| 2021 | 44 | 52 |
| 2022 | 31 | 53 |
| 2023 | 37 | 46 |
| 2024 | 46 | 32 |
| 2025 | 28 | 43 |
| 2026 | 22 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparel thermo-regulatory system15 Sep 2026US 12,733,697 B2NIKE, Inc.
- Thermoelectric coupler for selective heat transfer between coolant loops in a device cooling system1 Sep 2026US 12,723,785 B2Microsoft Technology Licensing, LLC
- Beverage preparation machine and cooling module25 Aug 2026US 12,715,751 B2Koninklijke Douwe Egberts B. V.
- Refrigeration chip, refrigeration system, and sample testing system and method11 Aug 2026US 12,704,444 B2Guangzhou Optocryo Biological Technology Co., Ltd.
- Face masks with noise attenuation28 Jul 2026US 12,691,005 B2SharkNinja Operating LLC
- Tempering device for controlling the temperature of a living being8 Oct 2026US 2026/0306315 A1Kohlbrat & Bunz Gesellschaft mbH
- Thermal chamber type cooling plate structure with improved cooling performance24 Sep 2026US 2026/0287221 A1SHENB Co., Ltd.
- Article and system for heating or cooling a surface6 Aug 2026US 2026/0224040 A1Sleep Solutions Inc.
- Handheld Heating and Cooling Device16 Jul 2026US 2026/0199125 A1
- Cylindrical eco-friendly temperature system16 Jul 2026US 2026/0202104 A1Sheetak, Inc.
Most cited
By later US patents
- Storage device for the delivery and pickup of goods349US 5,774,053 A1998
- Blanket assembly and selectively adjustable apparatus for providing heated or cooled air thereto255US 4,777,802 A1988
- Electric probing-test machine having a cooling system233US 5,084,671 ATokyo Electron Limited · 1992
- Thermoelectric heat exchanger227US 6,119,463 AAmerigon Incorporated · 2000
- Variable temperature seat climate control system217US 5,626,021 AAmerigon Incorporated · 1997