F24H 15/325
Of by-pass valves
Official title: of by-pass valves
F24H15/325 (Of by-pass valves) appears on 53 US grants and 72 published applications in this corpus.
Search patents in F24H- Granted patents
- 53
- Published applications
- 72
- Assignees
- 39
- Inventors
- 147
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 2 |
| 2011 | 1 | 2 |
| 2012 | 0 | 4 |
| 2013 | 1 | 4 |
| 2014 | 2 | 2 |
| 2015 | 8 | 1 |
| 2016 | 2 | 2 |
| 2017 | 0 | 1 |
| 2018 | 3 | 4 |
| 2019 | 2 | 5 |
| 2020 | 3 | 3 |
| 2021 | 3 | 13 |
| 2022 | 8 | 3 |
| 2023 | 7 | 3 |
| 2024 | 3 | 10 |
| 2025 | 2 | 9 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Hot water supply system capable of hot water preheating and malfunction determination method using same12 Jun 2025US 2025/0189143 A1Kyungdong Navien Co., Ltd.
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Most cited
By later US patents
- Remote water heater controller69US 4,568,821 APba S.P.A. · 1986
- Pumpless combination instantaneous/storage water heater system45US 7,298,968 B1Rheem Manufacturing Company · 2007
- Human interface panel for boiler control system26US 6,647,302 B2Honeywell International Inc. · 2003
- Adaptive heating control system for a water heater20US 9,063,551 B2Intellihot Green Technologies, Inc. · 2015
- Control method for a hybrid tankless water heater18US 8,971,694 B2Intellihot Green Technologies, Inc. · 2015