F23D 2203/1023
With specific free passage areas
Official title: with specific free passage areas
F23D2203/1023 (With specific free passage areas) appears on 39 US grants and 39 published applications in this corpus.
Search patents in F23D- Granted patents
- 39
- Published applications
- 39
- Assignees
- 36
- Inventors
- 84
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 3 |
| 2005 | 1 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 2 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 3 |
| 2013 | 0 | 2 |
| 2014 | 0 | 0 |
| 2015 | 2 | 7 |
| 2016 | 3 | 1 |
| 2017 | 4 | 0 |
| 2018 | 1 | 4 |
| 2019 | 2 | 7 |
| 2020 | 1 | 0 |
| 2021 | 2 | 3 |
| 2022 | 1 | 0 |
| 2023 | 1 | 2 |
| 2024 | 1 | 2 |
| 2025 | 2 | 0 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Infrared radiation emitter28 Apr 2026US 12,613,031 B2
- Gas burner membrane24 Mar 2026US 12,584,625 B2Beckett Thermal Limited
- Gas burner and heating appliance2 Dec 2025US 12,486,977 B2Bekaert Combustion Technology B.V.
- Method for forming a gas burner membrane5 Aug 2025US 12,379,106 B2Beckett Thermal Solutions
- Burner for a cooking appliance21 May 2024US 11,988,379 B2BSH Hausgeräte GmbH
- Premixed gas heating system for h212 Sep 2024US 2024/0302038 A1FERROLI S.p.A.
- Infrared radiation emitter4 Jan 2024US 2024/0003537 A1Solaronics, Inc.
- Gas burner membrane17 Aug 2023US 2023/0258331 A1Beckett Thermal Limited
- Gas burner and heating appliance9 Feb 2023US 2023/0043181 A1Bekaert Combustion Technology B.V.
- Burner for a cooking appliance16 Dec 2021US 2021/0388980 A1BSH Hausgeräte GmbH
Most cited
By later US patents
- Water heater with low NO.sub.x ceramic burner67US 5,511,516 ASABH (U.S.) Water Heater Group, Inc. · 1996
- Emission reduction53US 5,441,402 AGas Research Institute · 1995
- Burner with a perforated flame holder and pre-heat apparatus52US 9,377,190 B2Clearsign Combustion Corporation · 2016
- Method for flame location transition from a start-up location to a perforated flame holder49US 9,388,981 B2Clearsign Combustion Corporation · 2016
- Gas burner apparatus having a flame holder structure with a contoured surface32US 5,899,686 AGas Research Institute · 1999