F23B 5/00
Combustion apparatus with arrangements for burning uncombusted material from primary combustion
Official title: {Combustion apparatus with arrangements for burning uncombusted material from primary combustion (combustion apparatus characterised by the combination of two or more combustion chambers F23C6/00; the primary combustion being pulverulent fuel F23C9/003)}
F23B5/00 (Combustion apparatus with arrangements for burning uncombusted material from primary combustion) appears on 125 US grants and 40 published applications in this corpus.
Search patents in F23B- Granted patents
- 125
- Published applications
- 40
- Assignees
- 68
- Inventors
- 194
- Latest grant
- 25 Jul 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 5 | 0 |
| 1978 | 4 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 7 | 0 |
| 1982 | 9 | 0 |
| 1983 | 9 | 0 |
| 1984 | 11 | 0 |
| 1985 | 8 | 0 |
| 1986 | 5 | 0 |
| 1987 | 7 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 4 |
| 2008 | 0 | 0 |
| 2009 | 1 | 3 |
| 2010 | 0 | 3 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 3 | 4 |
| 2014 | 0 | 1 |
| 2015 | 4 | 1 |
| 2016 | 2 | 5 |
| 2017 | 0 | 1 |
| 2018 | 2 | 1 |
| 2019 | 0 | 2 |
| 2020 | 4 | 3 |
| 2021 | 1 | 1 |
| 2022 | 2 | 4 |
| 2023 | 2 | 3 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Biomass heating system with optimized flue gas treatment25 Jul 2023US 11,708,999 B2Sl-Technik GmbH
- Rotating grate with a cleaning device for a biomass heating system25 Apr 2023US 11,635,231 B2Sl-Technik GmbH
- Catalytic oxidizer22 Nov 2022US 11,506,379 B2
- Non-bypassable catalyst assisted appliances29 Mar 2022US 11,287,135 B2Jotul AS
- Combustor for various types of solid fuels12 Jan 2021US 10,890,321 B2
- Secondary combustion structure of smokeless stove16 Nov 2023US 2023/0366537 A1Hangzhou Yixiang Technology Research and Development Co., Ltd.
- Cooking appliance monitoring system for an apparatus for cooking and a method thereof12 Oct 2023US 2023/0324045 A1
- Oxygen injection for alternative fuels used in cement production8 Jun 2023US 2023/0175781 A1Messer Austria GmbH
- Biomass heating system, as well as its components27 Oct 2022US 2022/0341625 A1Sl-Technik GmbH
- Rotating grate with a cleaning device for a biomass heating system20 Oct 2022US 2022/0333770 A1Sl-Technik GmbH
Most cited
By later US patents
- Coal additives68US 4,807,542 ATransalta Resources Corporation · 1989
- Apparatus and method for reducing particulate emissions from combustion processes63US 5,702,244 AThermal Energy Systems, Incorporated · 1997
- Catalytic stove61US 4,319,556 AJamestown Group · 1982
- Partial combustion process for coal56US 4,407,206 AExxon Research & Engineering Co. · 1983
- Stove with catalytic converter39US 4,494,525 ACorning Glass Works · 1985