F05D 2220/75
Equipment using fuel having a low calorific value
Official title: equipment using fuel having a low calorific value, e.g. low BTU fuel, waste end, syngas, biomass fuel or flare gas
F05D2220/75 (Equipment using fuel having a low calorific value) appears on 108 US grants and 154 published applications in this corpus.
Search patents in F05D- Granted patents
- 108
- Published applications
- 154
- Assignees
- 74
- Inventors
- 305
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 2 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 5 |
| 2008 | 1 | 3 |
| 2009 | 2 | 5 |
| 2010 | 3 | 20 |
| 2011 | 4 | 10 |
| 2012 | 3 | 9 |
| 2013 | 11 | 12 |
| 2014 | 9 | 9 |
| 2015 | 8 | 5 |
| 2016 | 4 | 6 |
| 2017 | 3 | 6 |
| 2018 | 6 | 5 |
| 2019 | 5 | 0 |
| 2020 | 2 | 0 |
| 2021 | 3 | 6 |
| 2022 | 3 | 10 |
| 2023 | 9 | 10 |
| 2024 | 7 | 8 |
| 2025 | 12 | 12 |
| 2026 | 9 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Autonomous modular flare gas conversion systems and methods6 Oct 2026US 12,753,138 B2M2X Energy Inc.
- Aircraft engine and method of operating aircraft engine for reducing nonvolatile particulate matter emissions11 Aug 2026US 12,704,090 B2ROLLS-ROYCE plc
- Gas turbine engine and method for reducing nonvolatile particulate matter emissions in the exhaust19 May 2026US 12,631,335 B2ROLLS-ROYCE plc
- Emissions of non-volatile particulate matter from gas turbine engines combusting sustainable aviation fuel and fossil-based hydrocarbon fuel5 May 2026US 12,618,370 B2ROLLS-ROYCE plc
- Operating a gas turbine engine21 Apr 2026US 12,607,145 B2ROLLS-ROYCE plc
- Autonomous Modular Flare Gas Conversion Systems and Methods8 Oct 2026US 2026/0308093 A1M2X Energy Inc.
- Available thrust6 Aug 2026US 2026/0226862 A1ROLLS-ROYCE plc
- Operating a gas turbine engine30 Jul 2026US 2026/0218658 A1ROLLS-ROYCE plc
- Gas turbine control device30 Jul 2026US 2026/0218664 A1Mitsubishi Heavy Industries, Ltd.
- Gas turbine engine16 Jul 2026US 2026/0202059 A1ROLLS-ROYCE plc
Most cited
By later US patents
- Process for the generation of electrical power70US 5,705,916 AHaldor Topsoe A/S · 1998
- Method for collection and use of low-level methane emissions70US 6,393,821 B12002
- Method and system for heat recovery from dirty gaseous fuel in gasification power plants60US 7,665,291 B2General Electric Company · 2010
- Apparatus and method for combusting low quality fuel43US 6,640,548 B2Siemens Westinghouse Power Corporation · 2003
- System and method for automatic fuel blending and control for combustion gas turbine32US 7,895,821 B2General Electric Company · 2011