F25B 15/02
Without inert gas
Official title: without inert gas ({F25B15/004, F25B15/006, F25B15/008}, F25B15/12, F25B15/14, F25B15/16 take precedence)
F25B15/02 (Without inert gas) appears on 566 US grants and 322 published applications in this corpus.
Search patents in F25B- Granted patents
- 566
- Published applications
- 322
- Assignees
- 280
- Inventors
- 1,083
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 4 | 0 |
| 1978 | 6 | 0 |
| 1979 | 9 | 0 |
| 1980 | 7 | 0 |
| 1981 | 16 | 0 |
| 1982 | 15 | 0 |
| 1983 | 8 | 0 |
| 1984 | 22 | 0 |
| 1985 | 15 | 0 |
| 1986 | 7 | 0 |
| 1987 | 11 | 0 |
| 1988 | 9 | 0 |
| 1989 | 4 | 0 |
| 1990 | 6 | 0 |
| 1991 | 8 | 0 |
| 1992 | 6 | 0 |
| 1993 | 15 | 0 |
| 1994 | 14 | 0 |
| 1995 | 10 | 0 |
| 1996 | 16 | 0 |
| 1997 | 13 | 0 |
| 1998 | 27 | 0 |
| 1999 | 20 | 0 |
| 2000 | 20 | 0 |
| 2001 | 22 | 5 |
| 2002 | 17 | 9 |
| 2003 | 19 | 10 |
| 2004 | 13 | 7 |
| 2005 | 4 | 13 |
| 2006 | 5 | 2 |
| 2007 | 4 | 1 |
| 2008 | 4 | 8 |
| 2009 | 2 | 6 |
| 2010 | 3 | 10 |
| 2011 | 1 | 16 |
| 2012 | 3 | 14 |
| 2013 | 6 | 10 |
| 2014 | 10 | 17 |
| 2015 | 9 | 12 |
| 2016 | 11 | 21 |
| 2017 | 18 | 20 |
| 2018 | 9 | 20 |
| 2019 | 15 | 19 |
| 2020 | 23 | 13 |
| 2021 | 11 | 19 |
| 2022 | 17 | 13 |
| 2023 | 15 | 16 |
| 2024 | 18 | 18 |
| 2025 | 9 | 16 |
| 2026 | 4 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Vacuum cooling system and method22 Sep 2026US 12,742,560 B2NOH5 Cooling Pty. Ltd.
- Double effect absorption cooling for industrial applications25 Aug 2026US 12,716,655 B2Saudi Arabian Oil Company
- Renewable power and/or water generator23 Jun 2026US 12,663,189 B2Cirrus Rehos Renewable Power and Water (Pty) Ltd
- Multi-energy coupled cooling/heating system for buildings in long-term cooling region and operation method21 Apr 2026US 12,607,389 B2North China Municipal Engineering Design & Research Institute Co., Ltd.
- Vapor-absorption refrigeration system7 Oct 2025US 12,434,194 B2King Fahd University of Petroleum and Minerals
- System and method of co2 thermal swing adsorption with process improvements10 Sep 2026US 2026/0263984 A1Enhanced Energy Group LLC
- Integrated electrolyzer and absorption chiller system and methods of operating the same30 Jul 2026US 2026/0218396 A1Bloom Energy Corporation
- Absorption chiller system with a transport membrane heat exchanger23 Apr 2026US 2026/0110462 A1Scuderi Group, LLC
- Water removal system including an absorption chiller system and a heat pump system19 Mar 2026US 2026/0077302 A1Scuderi Group, LLC
- Refrigeration cycle apparatus12 Mar 2026US 2026/0071792 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Heat and electric power supply system and operation method thereof75US 6,477,852 B2Hitachi, Ltd. · 2002
- Rotatable heat transfer apparatus71US 6,158,237 AThe University of Nottingham · 2000
- Control apparatus for a positive displacement reciprocating pump68US 4,648,810 ABarmag Barmer Maschinenfabrik AG · 1987
- System for electric generation, heating, cooling, and ventilation68US 6,054,229 AZtek Corporation · 2000
- LiCl Dehumidifier LiBr absorption chiller hybrid air conditioning system with energy recovery66US 4,205,529 AThe United States of America as represented by the United States Department of Energy · 1980