F23N 2231/30
Representation of working time
F23N2231/30 (Representation of working time) appears on 11 US grants and 9 published applications in this corpus.
Search patents in F23N- Granted patents
- 11
- Published applications
- 9
- Assignees
- 7
- Inventors
- 19
- Latest grant
- 27 Jun 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 2 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Gas valve with emergency shutoff and mechanical timer27 Jun 2023US 11,686,405 B2
- Gas valve with emergency shutoff and mechanical timer31 Dec 2019US 10,520,108 B2Skytech Products Group
- Fluid instrument information providing device27 Sep 2016US 9,453,750 B2Panasonic Intellectual Property Management Co., Ltd.
- Automated Candle Blower22 Apr 2014US 8,702,419 B2
- Fuel usage monitoring14 Jan 2014US 8,629,778 B2Southern Company Services, Inc.
- Gas valve with emergency shutoff and mechanical timer23 Apr 2020US 2020/0124203 A1Skytech Products Group
- Gas valve with emergency shutoff and mechanical timer21 Sep 2017US 2017/0268693 A1Skytech Products Group
- Fluid instrument information providing device14 May 2015US 2015/0128721 A1Panasonic Intellectual Property Management Co., Ltd.
- Fuel Usage Monitoring17 May 2012US 2012/0119916 A1Southern Company Services, Inc.
- Automated Candle Blower6 Oct 2011US 2011/0244406 A1
Most cited
By later US patents
- Multi-stage boiler staging and modulation control methods and controllers49US 7,819,334 B2Honeywell International Inc. · 2010
- Fault-tolerant multi-node stage sequencer and method for energy systems22US 6,745,085 B2Honeywell International Inc. · 2004
- Process and device for operating a gas burner21US 5,899,683 AStiebel Eltron GmbH & Co. KG · 1999
- Process and circuit for controlling a gas burner19US 5,924,859 AStiebel Eltron GmbH & Co. KG · 1999
- System for monitoring a combustion apparatus16US 5,571,007 APaloma Kogyo Kabushiki Kaisha · 1996