F02C 3/30
Adding water, steam or other fluids for influencing combustion
Official title: Adding water, steam or other fluids {for influencing combustion, e.g. to obtain cleaner exhaust gases (F02C7/141, F02C7/30, F01D21/00, F01K21/04, F23D11/10 take precedence)}
F02C3/30 (Adding water, steam or other fluids for influencing combustion) appears on 767 US grants and 782 published applications in this corpus.
Search patents in F02C- Granted patents
- 767
- Published applications
- 782
- Assignees
- 230
- Inventors
- 1,393
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 8 | 0 |
| 1988 | 12 | 0 |
| 1989 | 2 | 0 |
| 1990 | 8 | 0 |
| 1991 | 8 | 0 |
| 1992 | 7 | 0 |
| 1993 | 11 | 0 |
| 1994 | 15 | 0 |
| 1995 | 9 | 0 |
| 1996 | 3 | 0 |
| 1997 | 7 | 0 |
| 1998 | 8 | 0 |
| 1999 | 11 | 0 |
| 2000 | 9 | 0 |
| 2001 | 15 | 4 |
| 2002 | 23 | 13 |
| 2003 | 19 | 14 |
| 2004 | 14 | 20 |
| 2005 | 15 | 21 |
| 2006 | 14 | 18 |
| 2007 | 11 | 19 |
| 2008 | 6 | 18 |
| 2009 | 11 | 25 |
| 2010 | 22 | 28 |
| 2011 | 8 | 25 |
| 2012 | 13 | 22 |
| 2013 | 13 | 38 |
| 2014 | 22 | 45 |
| 2015 | 26 | 31 |
| 2016 | 19 | 36 |
| 2017 | 28 | 47 |
| 2018 | 29 | 31 |
| 2019 | 27 | 26 |
| 2020 | 26 | 25 |
| 2021 | 24 | 25 |
| 2022 | 30 | 28 |
| 2023 | 35 | 47 |
| 2024 | 71 | 75 |
| 2025 | 72 | 68 |
| 2026 | 33 | 33 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Autonomous modular flare gas conversion systems and methods6 Oct 2026US 12,753,138 B2M2X Energy Inc.
- Airframe-integrated water injection storage system and methods of using29 Sep 2026US 12,747,692 B1Rtx Corporation
- Axial flow angled condenser arrangement for an aircraft propulsion system8 Sep 2026US 12,729,648 B2Rtx Corporation
- Integrated carbon sequestration and power generation system and methods of use1 Sep 2026US 12,723,540 B2Arbor Energy and Resources Corporation
- Systems and methods for operation of a flexible fuel combustor25 Aug 2026US 12,716,589 B28 Rivers Capital, LLC
- Autonomous Modular Flare Gas Conversion Systems and Methods8 Oct 2026US 2026/0308093 A1M2X Energy Inc.
- Combustion system and control method8 Oct 2026US 2026/0309100 A1IHI Corporation
- Water cooled exhaust duct1 Oct 2026US 2026/0298137 A1Rtx Corporation
- Partial exhaust condensation regenerator1 Oct 2026US 2026/0298138 A1Rtx Corporation
- Method for mapping contrail formation to engine performance characteristics24 Sep 2026US 2026/0286886 A1Pratt & Whitney Canada Corp.
Most cited
By later US patents
- Solid-fueled power generation system with carbon dioxide sequestration and method therefor203US 6,148,602 ANorther Research & Engineering Corporation · 2000
- Reduce pollution hydrocarbon combustion gas generator174US 5,709,077 AClean Energy Systems, Inc. · 1998
- Partial oxidation process with production of power170US 5,345,756 ATexaco Inc. · 1994
- Reduced pollution power generation system163US 5,715,673 AClean Energy Systems, Inc. · 1998
- Method and apparatus for achieving power augmentation in gas turbines via wet compression161US 5,930,990 AThe Dow Chemical Company · 1999