F23N 3/02
Regulating draught by direct pressure operation of single valves or dampers
F23N3/02 (Regulating draught by direct pressure operation of single valves or dampers) appears on 33 US grants and 27 published applications in this corpus.
Search patents in F23N- Granted patents
- 33
- Published applications
- 27
- Assignees
- 25
- Inventors
- 65
- Latest grant
- 23 Mar 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 2 |
| 2005 | 1 | 1 |
| 2006 | 1 | 2 |
| 2007 | 1 | 1 |
| 2008 | 1 | 4 |
| 2009 | 0 | 1 |
| 2010 | 3 | 3 |
| 2011 | 2 | 1 |
| 2012 | 2 | 2 |
| 2013 | 1 | 3 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 2 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Combustion device capable of measuring gas use amount, and method for measuring gas use amount23 Mar 2021US 10,955,137 B2Kyungdong Navien Co., Ltd.
- Damper with adjustable resistance to blade motion24 Mar 2020US 10,598,404 B2Research Products Corporation
- Multi-gas valve for a gas burning appliance7 Nov 2017US RE46,600 E1Coprecitec, S. L.
- Multi-gas appliance19 Jul 2016US 9,395,086 B2Coprecitec, S. L.
- Multi-gas appliance17 May 2016US 9,341,378 B2Coprecitec, S. L.
- Electrical heater radiant box purge and pressure relief19 Sep 2024US 2024/0310044 A1Lummus Technology Inc.
- Reactor System for Producing and/or Treating Particles in an Oscillating Process Gas Flow21 Sep 2023US 2023/0294067 A1Glatt Ingenieurtechnik GmbH
- Hot Air Blower22 Apr 2021US 2021/0116148 A1Paseco Co., Ltd.
- Combustion device capable of measuring gas use amount, and method for measuring gas use amount24 Jan 2019US 2019/0024890 A1Kyhungdong Navien Co., Ltd.
- Damper with adjustable resistance to blade motion4 Jan 2018US 2018/0003408 A1Research Products Corporation
Most cited
By later US patents
- Rotary valve in a multi-gas cooker65US 7,156,370 B22007
- Multi-gas cooker, with a rotary valve provided with interchangeable regulating means57US 7,641,470 B2Coprecitec, S. L. · 2010
- Rotary valve arranged in a multi-gas cooker55US 7,651,330 B2Coprecitec, S. L. · 2010
- Device for controlling the air supply to a gas burner24US 4,396,371 AGaswarme-Institut e.V. · 1983
- Fluid actuated damper control apparatus17US 4,266,929 A1981