C09K 5/047
For absorption-type refrigeration systems
Official title: {for absorption-type refrigeration systems}
C09K5/047 (For absorption-type refrigeration systems) appears on 203 US grants and 111 published applications in this corpus.
Search patents in C09K- Granted patents
- 203
- Published applications
- 111
- Assignees
- 116
- Inventors
- 402
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 12 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 6 | 0 |
| 1988 | 9 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 6 | 0 |
| 1995 | 6 | 0 |
| 1996 | 6 | 0 |
| 1997 | 6 | 0 |
| 1998 | 15 | 0 |
| 1999 | 6 | 0 |
| 2000 | 8 | 0 |
| 2001 | 12 | 3 |
| 2002 | 9 | 3 |
| 2003 | 4 | 4 |
| 2004 | 5 | 4 |
| 2005 | 1 | 1 |
| 2006 | 1 | 2 |
| 2007 | 1 | 4 |
| 2008 | 4 | 6 |
| 2009 | 1 | 3 |
| 2010 | 1 | 9 |
| 2011 | 4 | 10 |
| 2012 | 1 | 5 |
| 2013 | 3 | 6 |
| 2014 | 3 | 6 |
| 2015 | 3 | 5 |
| 2016 | 0 | 4 |
| 2017 | 3 | 5 |
| 2018 | 2 | 4 |
| 2019 | 6 | 10 |
| 2020 | 3 | 3 |
| 2021 | 6 | 5 |
| 2022 | 2 | 2 |
| 2023 | 5 | 3 |
| 2024 | 1 | 3 |
| 2025 | 2 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Adsorption heat pump20 Jan 2026US 12,529,500 B2Atomis Inc.
- Building/facility power cool heat and electric vehicle fast charging system30 Dec 2025US 12,508,932 B1
- Heat pump and heat pump unit using same15 Apr 2025US 12,276,465 B2Toyo Engineering Corporation
- Adsorption cooling system using carbon aerogel23 Jan 2024US 11,878,282 B2Lawrence Livermore National Security, LLC
- Diffusion absorption refrigeration apparatus and refrigeration method13 Jun 2023US 11,674,720 B2Korea University Research and Business Foundation
- Absorption Induced Caloric Effects and Uses Thereof14 May 2026US 2026/0132967 A1Cambridge Enterprise Limited
- Coolant and heat pump refrigerant5 Dec 2024US 2024/0400876 A1Sharp Kabushiki Kaisha
- Absorption Refrigeration Cycle and Compression-Absorption Refrigeration Cycle8 Aug 2024US 2024/0263061 A1Osaka Gas Co., Ltd.
- Waste heat utilizing absorption refrigeration system for climate control and/or electric systems cooling8 Feb 2024US 2024/0042823 A1Hamilton Sundstrand Corporation
- Sustainable evaporative cooling coating for a broad range of relative humidity7 Dec 2023US 2023/0392062 A1The Hong Kong University of Science and Technology
Most cited
By later US patents
- High efficiency absorption heat pump and methods of use143US 7,313,926 B2Rexorce Thermionics, Inc. · 2008
- Absorption refrigerant compositions for use in absorption refrigeration systems85US 4,428,854 ADaikin Kogyo Co., Ltd. · 1984
- Temperature-controlled shipping container and method for using same79US 6,584,797 B1Nanopore, Inc. · 2003
- Heat pumps65US 4,559,154 AImperial Chemical Industries PLC · 1985
- Auxiliary active motor vehicle heating and air conditioning system64US 6,282,919 B1Rocky Research · 2001