F22B 3/04
Methods of steam generation: other methods of steam generation: by drop in
Official title: by drop in pressure of high-pressure hot water within pressure-reducing chambers, e.g. in accumulators
F22B3/04 (Methods of steam generation: other methods of steam generation: by drop in) appears on 82 US grants and 66 published applications in this corpus.
Search patents in F22B- Granted patents
- 82
- Published applications
- 66
- Assignees
- 61
- Inventors
- 188
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 5 | 0 |
| 1984 | 7 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 4 |
| 2008 | 0 | 1 |
| 2009 | 1 | 3 |
| 2010 | 1 | 5 |
| 2011 | 3 | 4 |
| 2012 | 0 | 2 |
| 2013 | 2 | 1 |
| 2014 | 3 | 4 |
| 2015 | 0 | 1 |
| 2016 | 1 | 2 |
| 2017 | 2 | 0 |
| 2018 | 2 | 4 |
| 2019 | 3 | 3 |
| 2020 | 3 | 7 |
| 2021 | 2 | 7 |
| 2022 | 6 | 5 |
| 2023 | 7 | 3 |
| 2024 | 2 | 4 |
| 2025 | 5 | 2 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Vacuum evaporative heat exchanger26 Aug 2025US 12,398,050 B2
- Compact fluid heating system with high bulk heat flux using elevated heat exchanger pressure drop1 Jul 2025US 12,345,445 B2Fulton Group N.A., Inc.
- Heat supply-energy-saving equipment for printing and dyeing factory6 May 2025US 12,291,808 B2Guangdong University of Technology
- Vapor source system based on vapor-liquid ejector supercharging combined with flash vaporization technology18 Feb 2025US 12,228,280 B2Dalian Ocean University
- System for treating bio-contaminated wastewater and process for decontaminating a wastewater source14 Jan 2025US 12,195,356 B2Verno Holdings, LLC
- Steam generation system10 Sep 2026US 2026/0266455 A1Hydram Research
- Steam Generation Device and Steam Generation Method2 Jul 2026US 2026/0185698 A1Hitachi, Ltd.
- Systems, Methods, and Apparatuses for Producing High-Pressure Steam12 Jun 2025US 2025/0189118 A1Skyven Technologies, LLC
- Heat supply-energy-saving equipment for printing and dyeing factory20 Feb 2025US 2025/0060093 A1Guangdong University of Technology
- Vacuum evaporative heat exchanger19 Dec 2024US 2024/0417282 A1Sreus Energy, LLC
Most cited
By later US patents
- Flow control at flash tank of open cycle vapor compression heat pumps69US 4,466,253 AGeneral Electric Company · 1984
- Two-phase expansion system and method for energy recovery52US 7,987,676 B2General Electric Company · 2011
- Downhole steam generator using low pressure fuel and air supply51US 4,390,062 AThe United States of America as represented by the United States Department of Energy · 1983
- Heat pump46US 4,454,720 AMechanical Technology Incorporated · 1984
- Accelerated water evaporation system33US 6,637,379 B2A. Western Pump & Dredge, Inc. · 2003