F23N 2221/10
Analysing fuel properties
Official title: Analysing fuel properties, e.g. density, calorific
F23N2221/10 (Analysing fuel properties) appears on 150 US grants and 157 published applications in this corpus.
Search patents in F23N- Granted patents
- 150
- Published applications
- 157
- Assignees
- 111
- Inventors
- 452
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 5 | 0 |
| 2001 | 0 | 1 |
| 2002 | 3 | 2 |
| 2003 | 3 | 3 |
| 2004 | 6 | 6 |
| 2005 | 4 | 3 |
| 2006 | 2 | 4 |
| 2007 | 3 | 10 |
| 2008 | 5 | 2 |
| 2009 | 5 | 11 |
| 2010 | 6 | 12 |
| 2011 | 5 | 9 |
| 2012 | 3 | 14 |
| 2013 | 5 | 5 |
| 2014 | 10 | 10 |
| 2015 | 5 | 6 |
| 2016 | 4 | 6 |
| 2017 | 8 | 3 |
| 2018 | 1 | 8 |
| 2019 | 3 | 5 |
| 2020 | 6 | 4 |
| 2021 | 4 | 7 |
| 2022 | 4 | 6 |
| 2023 | 6 | 9 |
| 2024 | 10 | 9 |
| 2025 | 6 | 1 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and kiln for the firing of substantially flat base ceramic articles8 Sep 2026US 12,729,855 B2Sacmi Forni & Filter S.P.A.
- Measuring instrument for determining the gross or net calorific value of a hydrocarbon-containing fuel gas21 Jul 2026US 12,687,496 B2Siemens Aktiengesellschaft
- Method and controller for operating a gas burner appliance19 May 2026US 12,631,331 B2Pittway Sarl
- Propulsion system control23 Dec 2025US 12,503,983 B2ROLLS-ROYCE plc
- Systems for controlling a fuel blend for a gas turbine16 Dec 2025US 12,497,925 B2General Electric Company
- Processes for Managing Combustion of a Fuel Gas Supplied to a Combustion Zone5 Mar 2026US 2026/0063294 A1
- Sensor-Driven Variable Gas Flow Burner System18 Sep 2025US 2025/0290631 A1
- Method and kiln for the firing of substantially flat base ceramic articles7 Nov 2024US 2024/0369223 A1Sacmi Forni & Filter S.P.A.
- Propulsion system control24 Oct 2024US 2024/0352898 A1ROLLS-ROYCE plc
- Control of a Combustion Device26 Sep 2024US 2024/0318819 A1Siemens Aktiengesellschaft
Most cited
By later US patents
- Methods and systems for improving thermal efficiency, determining effluent flows and for determining fuel mass flow rates of a fossil fuel fired system61US 5,790,420 A1998
- Combustion control system58US 4,749,122 AThe Foxboro Company · 1988
- Combustibles analyzer54US 4,158,166 AWestinghouse Electric Corp. · 1979
- Combustion dynamics control for variable fuel gas composition and temperature based on gas control valve feedback51US 6,082,092 AGeneral Electric Company · 2000
- Method of measuring changes in the energy transfer efficiency of a thermal transfer system41US 5,513,519 A1996