F28C 3/08
With change of state
Official title: with change of state, e.g. absorption, evaporation, condensation (generating steam under pressure F22)
F28C3/08 (With change of state) appears on 252 US grants and 253 published applications in this corpus.
Search patents in F28C- Granted patents
- 252
- Published applications
- 253
- Assignees
- 174
- Inventors
- 478
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 11 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 1 |
| 2002 | 4 | 3 |
| 2003 | 3 | 5 |
| 2004 | 4 | 6 |
| 2005 | 6 | 9 |
| 2006 | 10 | 8 |
| 2007 | 2 | 2 |
| 2008 | 2 | 7 |
| 2009 | 2 | 12 |
| 2010 | 1 | 8 |
| 2011 | 5 | 7 |
| 2012 | 8 | 13 |
| 2013 | 10 | 18 |
| 2014 | 4 | 21 |
| 2015 | 13 | 20 |
| 2016 | 15 | 11 |
| 2017 | 14 | 9 |
| 2018 | 11 | 16 |
| 2019 | 11 | 10 |
| 2020 | 16 | 20 |
| 2021 | 16 | 9 |
| 2022 | 13 | 4 |
| 2023 | 2 | 7 |
| 2024 | 10 | 13 |
| 2025 | 6 | 9 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fresh water evaporative cooling system29 Sep 2026US 12,747,874 B2Bessamaire Sales LLC
- Tunnel type hybrid cooling steam recycling apparatus21 Apr 2026US 12,607,410 B2Big Sun Energy Technology Inc.
- Moisture monitoring system10 Feb 2026US 12,546,734 B2Banyan Water, Inc.
- Air conditioning device with indirect cooling by evaporation13 Jan 2026US 12,523,381 B2Caeli Energie
- Multimode direct injection heater assembly30 Dec 2025US 12,510,242 B2Prosonix Limited
- Rapid Thermal Conversion of Biomass13 Aug 2026US 2026/0234476 A1Ensyn Renewables, Inc.
- Cooling arrangement and method for cooling at least one oil-to-air external heat exchanger6 Aug 2026US 2026/0227131 A1Hitachi Energy Ltd
- Gas cooling apparatus and heat furnace16 Apr 2026US 2026/0104207 A1Laplace Renewable Energy Technology Co., Ltd.
- Multi-Mode Adiabatic Cooling System with Deluge Feature5 Mar 2026US 2026/0063380 A1
- Compositions comprising 2,3,3,3-tetrafluoropropene, 1,1,2,3-tetra-chloropropene, 2-chloro-3,3,3-trifluoropropene, or 2-chloro-1,1,1,2-tetrafluoropropane29 Jan 2026US 2026/0027399 A1The Chemours Company Fc, LLC
Most cited
By later US patents
- Rapid thermal conversion of biomass165US 7,905,990 B2Ensyn Renewables, Inc. · 2011
- Thermal gradient humidification-dehumidification desalination system87US 4,363,703 AInstitute of Gas Technology · 1982
- Heating tower apparatus and method with isolation of outlet and inlet air79US 7,137,623 B2SPX Cooling Technologies, Inc. · 2006
- Power generation from hot brines73US 3,988,895 A1976
- Rotatable heat transfer apparatus71US 6,158,237 AThe University of Nottingham · 2000