F22B 1/1861
Waste heat boilers with supplementary firing
Official title: {Waste heat boilers with supplementary firing}
F22B1/1861 (Waste heat boilers with supplementary firing) appears on 41 US grants and 27 published applications in this corpus.
Search patents in F22B- Granted patents
- 41
- Published applications
- 27
- Assignees
- 37
- Inventors
- 107
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 2 |
| 2004 | 2 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 2 |
| 2008 | 0 | 1 |
| 2009 | 1 | 2 |
| 2010 | 0 | 0 |
| 2011 | 2 | 1 |
| 2012 | 1 | 1 |
| 2013 | 1 | 1 |
| 2014 | 1 | 1 |
| 2015 | 0 | 6 |
| 2016 | 2 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 2 |
| 2019 | 3 | 0 |
| 2020 | 1 | 1 |
| 2021 | 1 | 0 |
| 2022 | 1 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Induced drafting in process heaters15 Sep 2026US 12,736,215 B2Saudi Arabian Oil Company
- Air supplying apparatus and method of hybrid power generation equipment3 May 2022US 11,319,874 B1
- Power plant methods and apparatus23 Mar 2021US 10,954,854 B2Mitsubishi Power Americas, Inc.
- Rural bulk organic waste pollutant source comprehensive treatment system and method26 May 2020US 10,662,123 B2
- Power generation apparatus31 Dec 2019US 10,519,813 B2Yanmar Co., Ltd.
- Heating energy-saving system and method for deeply utilizing waste heat of boiler plant23 Jul 2026US 2026/0210542 A1Shandong Yunqing Environmental Sci-Tech Co., Ltd
- Combined cycle unit and non-oxygen-consuming energy storage system thereof18 Sep 2025US 2025/0290626 A1Jia Kai Energy Technology Co. Ltd.
- Induced drafting in process heaters19 Jun 2025US 2025/0198614 A1Saudi Arabian Oil Company
- Air supplying apparatus and method of hybrid power generation equipment5 May 2022US 2022/0136437 A1Doosan Heavy Industries Construction Co., Ltd
- Power plant methods and apparatus9 Jan 2020US 2020/0011242 A1Mitsubishi Hitachi Power Systems Americas, Inc.
Most cited
By later US patents
- Oxidant control in co-generation installations151US 6,247,315 B1American Air Liquids, Inc. · 2001
- Heat recovery steam generator53US 5,881,551 ACombustion Engineering, Inc. · 1999
- Low NOX cogeneration process26US 4,811,555 ARadian Corporation · 1989
- HRSG boiler design with air staging and gas reburn24US 5,461,853 AThe Babcock & Wilcox Company · 1995
- Low NOX cogeneration process21US 4,936,088 ARadian Corporation · 1990