F25B 2313/02732
Using two three-way valves
Official title: using two three-way valves
F25B2313/02732 (Using two three-way valves) appears on 134 US grants and 164 published applications in this corpus.
Search patents in F25B- Granted patents
- 134
- Published applications
- 164
- Assignees
- 35
- Inventors
- 292
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 3 |
| 2011 | 2 | 2 |
| 2012 | 1 | 15 |
| 2013 | 0 | 21 |
| 2014 | 4 | 12 |
| 2015 | 9 | 9 |
| 2016 | 16 | 5 |
| 2017 | 20 | 4 |
| 2018 | 7 | 4 |
| 2019 | 4 | 8 |
| 2020 | 11 | 9 |
| 2021 | 2 | 13 |
| 2022 | 12 | 18 |
| 2023 | 9 | 8 |
| 2024 | 9 | 17 |
| 2025 | 17 | 9 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Ethanol production by Escherichia coli strains co-expressing Zymomonas PDC and ADH genes126US 5,000,000 AUniversity of Florida · 1991
- Geothermal storage heating and cooling system91US 4,375,831 A1983
- Methods and systems for mini-split liquid desiccant air conditioning30US 10,024,558 B27AC Technologies, Inc. · 2018
- Heating system26US 4,055,963 ADaikin Kogyo Co., Ltd. · 1977
- Refrigeration apparatus18US 5,490,399 ADaikin Industries, Ltd. · 1996