F25B 2313/02731
Using one three-way valve
Official title: using one three-way valve
F25B2313/02731 (Using one three-way valve) appears on 65 US grants and 61 published applications in this corpus.
Search patents in F25B- Granted patents
- 65
- Published applications
- 61
- Assignees
- 38
- Inventors
- 168
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 3 |
| 2007 | 3 | 1 |
| 2008 | 0 | 2 |
| 2009 | 1 | 3 |
| 2010 | 0 | 3 |
| 2011 | 0 | 0 |
| 2012 | 4 | 1 |
| 2013 | 1 | 4 |
| 2014 | 0 | 3 |
| 2015 | 2 | 2 |
| 2016 | 3 | 4 |
| 2017 | 4 | 5 |
| 2018 | 1 | 3 |
| 2019 | 7 | 6 |
| 2020 | 5 | 7 |
| 2021 | 4 | 1 |
| 2022 | 3 | 7 |
| 2023 | 1 | 1 |
| 2024 | 5 | 2 |
| 2025 | 2 | 2 |
| 2026 | 2 | 1 |
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
- Combination air conditioning system and water heater50US 5,906,104 A1999
- Solar energy system with heat pump assistance47US 4,169,554 A1979
- Multi-function self-contained heat pump system40US 4,856,578 ANepco, Inc. · 1989
- Heat pump with reheat and economizer functions39US 7,272,948 B2Carrier Corporation · 2007