F02K 9/00
Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor
Official title: Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
F02K9/00 (Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor) appears on 2,590 US grants and 1,708 published applications in this corpus.
Search patents in F02K- Granted patents
- 2,590
- Published applications
- 1,708
- Assignees
- 691
- Inventors
- 4,477
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 61 | 0 |
| 1977 | 35 | 0 |
| 1978 | 40 | 0 |
| 1979 | 24 | 0 |
| 1980 | 19 | 0 |
| 1981 | 16 | 0 |
| 1982 | 30 | 0 |
| 1983 | 27 | 0 |
| 1984 | 37 | 0 |
| 1985 | 32 | 0 |
| 1986 | 41 | 0 |
| 1987 | 47 | 0 |
| 1988 | 61 | 0 |
| 1989 | 47 | 0 |
| 1990 | 52 | 0 |
| 1991 | 45 | 0 |
| 1992 | 58 | 0 |
| 1993 | 36 | 0 |
| 1994 | 34 | 0 |
| 1995 | 52 | 0 |
| 1996 | 37 | 0 |
| 1997 | 32 | 0 |
| 1998 | 59 | 0 |
| 1999 | 38 | 0 |
| 2000 | 51 | 0 |
| 2001 | 72 | 10 |
| 2002 | 66 | 38 |
| 2003 | 57 | 57 |
| 2004 | 61 | 66 |
| 2005 | 42 | 54 |
| 2006 | 44 | 41 |
| 2007 | 35 | 33 |
| 2008 | 24 | 46 |
| 2009 | 43 | 76 |
| 2010 | 45 | 82 |
| 2011 | 46 | 46 |
| 2012 | 45 | 54 |
| 2013 | 63 | 70 |
| 2014 | 51 | 61 |
| 2015 | 60 | 74 |
| 2016 | 62 | 88 |
| 2017 | 51 | 90 |
| 2018 | 56 | 105 |
| 2019 | 76 | 65 |
| 2020 | 96 | 86 |
| 2021 | 72 | 64 |
| 2022 | 81 | 92 |
| 2023 | 91 | 86 |
| 2024 | 109 | 83 |
| 2025 | 77 | 79 |
| 2026 | 54 | 62 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F02K 9/42Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor: using liquid1,159
- F02K 9/08Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor: using solid756
- F02K 9/97Rocket nozzles527
- F02K 9/80Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor: characterised by403
- F02K 9/95Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor: characterised by228
- F02K 9/72Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor: using liquid152
- F02K 9/74Combined with another jet-propulsion plant150
- F02K 9/94Re-ignitable or restartable rocket- engine plants99
Recent patents
- Hybrid rocket engine fuel grains with radial energy compositional variations6 Oct 2026US 12,753,131 B2Firehawk Aerospace, Inc.
- Combustion mode switching engine6 Oct 2026US 12,753,730 B2PD AeroSpace, LTD.
- Thrust vector control for hybrid propellants rocket engine with embedded fluid injection ports22 Sep 2026US 12,742,433 B2Laboratoire Reaction Dynamics Inc.
- Thruster propellants15 Sep 2026US 12,735,368 B2The United States of America as represented by the Secretary of the Air Force
- Hybrid ignitor8 Sep 2026US 12,729,662 B1Rtx Corporation
- Transpiration-cooled systems having permeable and non-permeable portions8 Oct 2026US 2026/0307827 A1Blue Origin Manufacturing, LLC
- Modulating internal ballistics in a 3d-printed rocket motor and an additive manufacturing process8 Oct 2026US 2026/0309106 A1X-Bow Launch Systems Inc.
- Transient plasma enhanced combustion device for restartable solid rocket propulsion8 Oct 2026US 2026/0309133 A1The Aerospace Corporation
- Systems and Methods for Object Honing and Testing1 Oct 2026US 2026/0295762 A1Relativity Space, Inc.
- Omnivorous solar thermal thruster, cooling systems, and thermal energy transfer in rockets24 Sep 2026US 2026/0286917 A1Trans Astronautica Corporation
Most cited
By later US patents
- Propulsion system208US 6,357,357 B1Alliant Techsystems Inc. · 2002
- Reduce pollution hydrocarbon combustion gas generator174US 5,709,077 AClean Energy Systems, Inc. · 1998
- Reduced pollution power generation system163US 5,715,673 AClean Energy Systems, Inc. · 1998
- Microturbomachinery145US 5,932,940 AMassachusetts Institute of Technology · 1999
- Reduced pollution power generation system having multiple turbines and reheater121US 5,956,937 AClean Energy Systems, Inc. · 1999