F22D 11/06
For returning condensate to boiler
Official title: for returning condensate to boiler
F22D11/06 (For returning condensate to boiler) appears on 46 US grants and 24 published applications in this corpus.
Search patents in F22D- Granted patents
- 46
- Published applications
- 24
- Assignees
- 26
- Inventors
- 66
- Latest grant
- 2 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 1 |
| 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 | 4 |
| 2015 | 0 | 1 |
| 2016 | 2 | 1 |
| 2017 | 3 | 2 |
| 2018 | 2 | 1 |
| 2019 | 1 | 2 |
| 2020 | 1 | 3 |
| 2021 | 2 | 5 |
| 2022 | 4 | 0 |
| 2023 | 2 | 2 |
| 2024 | 0 | 0 |
| 2025 | 2 | 0 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Steam utilization system of factory producing concrete pipe pile2 Dec 2025US 12,485,577 B2Guangdong University of Technology
- Chemical dispensing system for treating fluid in boiler/cooling systems8 Jul 2025US 12,352,431 B2Condor Technologies, Inc.
- Energy-saving system using electric heat pump to deeply recover flue gas waste heat from heat power plant for district heating21 Nov 2023US 11,821,637 B2Dalian University of Technology
- Chemical dispensing system for treating fluid in boiler/cooling systems19 Sep 2023US 11,761,624 B2CONDOR TECHNOLOGIES, a division of AZURE WATER SER
- Combined cooling, heating and power system11 Oct 2022US 11,466,594 B2Gas Technology Institute
- Method for Generating Steam and Steam Generation Device20 Aug 2026US 2026/0243418 A1Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Chemical dispensing system for treating fluid in boiler/cooling systems8 Jan 2026US 2026/0009531 A1Condor Technologies, Inc.
- Chemical dispensing system for treating fluid in boiler/cooling systems28 Dec 2023US 2023/0417408 A1Condor Technologies, Inc.
- Steam utilization system of factory producting concrete pipe pile24 Aug 2023US 2023/0264387 A1Guangdong University of Technology
- Solar aided coal-fired power generation system participating in primary frequency regulation and control method thereof7 Oct 2021US 2021/0310365 A1Xi' An Jiaotong University
Most cited
By later US patents
- Leak proof, preloaded, high-biasing force float-operated over-center valve actuating mechanism26US 5,141,405 A1992
- Multi-compression coil springs for a liquid pump21US 5,865,603 A1999
- Pump and combination pump and trap with snap-over mechanism and double-seal outlet valve19US 5,655,888 ATLV Co., Ltd. · 1997
- Closed loop solar collector system powering a self-starting uniflow engine17US 4,698,973 A1987
- Vacuum jet pump for recovering a mixed fluid of gas and liquid condensates from steam-using apparatus11US 5,611,673 AShin-Ei Kabushiki Kaisha · 1997