F28F 2013/008
Variable conductance materials
Official title: {Variable conductance materials; Thermal switches}
F28F2013/008 (Variable conductance materials) appears on 196 US grants and 230 published applications in this corpus.
Search patents in F28F- Granted patents
- 196
- Published applications
- 230
- Assignees
- 157
- Inventors
- 565
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 4 |
| 2003 | 2 | 3 |
| 2004 | 0 | 3 |
| 2005 | 4 | 7 |
| 2006 | 3 | 3 |
| 2007 | 4 | 4 |
| 2008 | 3 | 7 |
| 2009 | 1 | 10 |
| 2010 | 1 | 8 |
| 2011 | 0 | 6 |
| 2012 | 6 | 6 |
| 2013 | 4 | 14 |
| 2014 | 5 | 7 |
| 2015 | 7 | 7 |
| 2016 | 5 | 8 |
| 2017 | 6 | 18 |
| 2018 | 20 | 20 |
| 2019 | 16 | 19 |
| 2020 | 17 | 15 |
| 2021 | 13 | 12 |
| 2022 | 11 | 10 |
| 2023 | 10 | 18 |
| 2024 | 10 | 10 |
| 2025 | 10 | 7 |
| 2026 | 7 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Self-adaptive thermal management systems and methods thereof23 Jun 2026US 12,663,226 B2Toyota Jidosha Kabushiki Kaisha
- Variable thermal insulation2 Jun 2026US 12,644,558 B2Collins Engine Nozzles, Inc.
- Methods, devices, and systems for control of heat transfer using spin crossover12 May 2026US 12,624,907 B2President and Fellows of Harvard College
- Planar bridging-droplet thermal diodes5 May 2026US 12,618,618 B2Virginia Tech Intellectual Properties, Inc.
- Phase change material (PCM)-based conductive thermal actuator switch24 Mar 2026US 12,586,845 B2Raytheon Company
- Thermal Switch for a Cryogenic System6 Aug 2026US 2026/0227138 A1Siemens Healthcare GmbH
- Thermal Energy Storage System25 Jun 2026US 2026/0177328 A1Wellhead Power Solutions, LLC
- Cooling system for use in cold ambient conditions28 May 2026US 2026/0146809 A1Vertiv Corporation
- Techniques for temperature stabilizing at least one device5 Mar 2026US 2026/0068093 A1Honeywell International Inc.
- Articulating radiator system4 Dec 2025US 2025/0369707 A1Paragon Space Development Corporation
Most cited
By later US patents
- Cooking utensil with improved heat retention150US 5,643,485 AMidwest Research Institute · 1997
- Thermal switch112US 3,957,107 AThe United States of America as represented by the Secretary of the Air Force · 1976
- Thermal switch, methods of use and manufacturing methods for same97US 7,411,792 B2Washington State University Research Foundation · 2008
- Gas-controlled dynamic vacuum insulation with gas gate78US 5,318,108 AMidwest Research Institute · 1994
- Variably insulating portable heater/cooler70US 5,813,454 AVaritec Thermal, L.L.C. · 1998