F22B 35/101
Operating with superimposed recirculation during starting or low load periods
Official title: {operating with superimposed recirculation during starting or low load periods, e.g. composite boilers (F22B35/125 takes precedence)}
F22B35/101 (Operating with superimposed recirculation during starting or low load periods) appears on 7 US grants and 3 published applications in this corpus.
Search patents in F22B- Granted patents
- 7
- Published applications
- 3
- Assignees
- 7
- Inventors
- 13
- Latest grant
- 30 Jan 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
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| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Hot evaporator refilling30 Jan 2024US 11,885,487 B2NEM Energy B.V.
- Method for low load operation of a power plant with a once-through boiler5 Feb 2019US 10,196,939 B2General Electric Technology GmbH
- Method for operating a once-through steam generator and steam generator designed for carrying out the method24 Nov 2015US 9,194,577 B2Siemens Aktiengesellschaft
- Method of generating steam in a forced-through-flow boiler31 Dec 1996US 5,588,400 AL. & C. Steinmuller GmbH
- Steam plant and method of controlling same2 May 1989US 4,825,654 ASulzer Brothers Limited
- Hot evaporator refilling29 Dec 2022US 2022/0412548 A1Siemens Energy, Inc.
- Method for low load operation of a power plant with a once-through boiler4 Feb 2016US 2016/0032784 A1General Electric Technology GmbH
- Method for operating a once-through steam generator and steam generator designed for carrying out the method16 Jan 2014US 2014/0014189 A1Siemens Aktiengesellschaft
Most cited
By later US patents
- Method of generating steam in a forced-through-flow boiler12US 5,588,400 AL. & C. Steinmuller GmbH · 1996
- Device for separating water and steam in a once-through steam generator8US 4,205,633 AKraftwerk Union Aktiengesellschaft · 1980
- Vapor generator having a pair of combustion chambers3US 4,325,328 ASulzer Brothers Limited · 1982
- Steam plant and method of controlling same2US 4,825,654 ASulzer Brothers Limited · 1989
- Method for low load operation of a power plant with a once-through boiler1US 10,196,939 B2General Electric Technology GmbH · 2019