F28D 21/0012
The heat being recuperated from waste water or from condensates
Official title: {the heat being recuperated from waste water or from condensates}
F28D21/0012 (The heat being recuperated from waste water or from condensates) appears on 139 US grants and 185 published applications in this corpus.
Search patents in F28D- Granted patents
- 139
- Published applications
- 185
- Assignees
- 103
- Inventors
- 340
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 6 | 0 |
| 1983 | 7 | 0 |
| 1984 | 4 | 0 |
| 1985 | 6 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 2 |
| 2002 | 3 | 2 |
| 2003 | 1 | 2 |
| 2004 | 2 | 1 |
| 2005 | 1 | 2 |
| 2006 | 1 | 0 |
| 2007 | 0 | 6 |
| 2008 | 1 | 6 |
| 2009 | 1 | 9 |
| 2010 | 1 | 9 |
| 2011 | 3 | 13 |
| 2012 | 4 | 14 |
| 2013 | 3 | 16 |
| 2014 | 7 | 10 |
| 2015 | 4 | 5 |
| 2016 | 5 | 11 |
| 2017 | 7 | 12 |
| 2018 | 5 | 4 |
| 2019 | 6 | 7 |
| 2020 | 7 | 14 |
| 2021 | 6 | 5 |
| 2022 | 7 | 5 |
| 2023 | 5 | 7 |
| 2024 | 7 | 9 |
| 2025 | 2 | 7 |
| 2026 | 3 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Heat exchanger water trap9 Jun 2026US 12,650,266 B2Knl Holding HjøRring Aps
- System and method for providing domestic hot water and/or space heating within a building, and a removable cover of a storage vessel19 May 2026US 12,631,345 B2Mitsubishi Electric Corporation
- Grey water heat recovery apparatus24 Feb 2026US 12,560,390 B2Consat AB
- Dish washing machine with heat exchangers18 Feb 2025US 12,226,065 B2K.D.W. Company Limited
- Device for recovering waste heat from hot water4 Feb 2025US 12,215,929 B2IDO Corporation
- Wastewater heat exchanger27 Aug 2026US 2026/0251411 A1
- Heat exchanger and method for operating a heat exchanger30 Jul 2026US 2026/0218992 A1Huber SE
- A drain system and a shower or shower cabin23 Jul 2026US 2026/0210562 A1Enduce AB
- Vertical heat recovery system11 Jun 2026US 2026/0160503 A1Zypho, SA
- Heat recovery system26 Feb 2026US 2026/0055973 A1Zypho, SA
Most cited
By later US patents
- Heat exchanger for a shower or bathtub48US 10,072,897 B2Joulia AG · 2018
- Waste water heat recovering unit and dishwashing machine43US 5,660,193 APremark FEG L.L.C. · 1997
- Synthesis gas cooler and waste heat boiler38US 4,377,132 ATexaco Development Corporation · 1983
- Geometry of heat exchanger with high efficiency36US 9,134,072 B2Trustees of Dartmouth College · 2015
- Method of producing multiple coil, multiple tube heat exchanger34US 4,451,960 AMolitor Industries, Inc. · 1984