F02K 9/18
Of the internal-burning type having a star or like shaped internal cavity
Official title: of the internal-burning type having a star or like shaped internal cavity
F02K9/18 (Of the internal-burning type having a star or like shaped internal cavity) appears on 52 US grants and 41 published applications in this corpus.
Search patents in F02K- Granted patents
- 52
- Published applications
- 41
- Assignees
- 26
- Inventors
- 86
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 4 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 3 |
| 2011 | 0 | 2 |
| 2012 | 4 | 1 |
| 2013 | 4 | 3 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 2 | 1 |
| 2017 | 0 | 1 |
| 2018 | 1 | 7 |
| 2019 | 5 | 0 |
| 2020 | 1 | 4 |
| 2021 | 3 | 0 |
| 2022 | 1 | 0 |
| 2023 | 3 | 4 |
| 2024 | 6 | 2 |
| 2025 | 3 | 2 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Modulating internal ballistics in a 3D-printed rocket motor and an additive manufacturing process18 Mar 2025US 12,253,051 B2X-Bow Launch Systems Inc.
- 3D-printed rocket fuel grains, rocket engines and an additive manufacturing process15 Oct 2024US 12,116,957 B1X-Bow Launch Systems Inc.
- Modulating internal ballistics in a 3d-printed rocket motor and an additive manufacturing process8 Oct 2026US 2026/0309106 A1X-Bow Launch Systems Inc.
- Joint for Rocket Motor16 Jul 2026US 2026/0201853 A1Ursa Major Technologies, Inc.
- Rocket motor21 May 2026US 2026/0138757 A1Cesaroni Aerospace Incorporated
- 3d-printed rocket fuel grains, rocket engines and an additive manufacturing process30 Apr 2026US 2026/0117725 A1X-Bow Launch Systems Inc.
- Hybrid Rocket Engine Fuel Grains with Radial Energy Compositional Variations14 Aug 2025US 2025/0257016 A1Firehawk Aerospace, Inc.
Most cited
By later US patents
- Systems and methods for casting hybrid rocket motor fuel grains38US 9,429,104 B2The Aerospace Corporation · 2016
- Rocket vehicle thrust augmentation within divergent section of nozzle25US 6,568,171 B2Aerojet-General Corporation · 2003
- Glow plug type acoustic resonance igniter25US 9,476,399 B1Orbital Technologies Corporation · 2016
- Modular divert and attitude control system20US 8,242,422 B2Raytheon Company · 2012
- Additive manufactured thermoplastic-nanocomposite aluminum hybrid rocket fuel grain and method of manufacturing same18US 10,286,599 B22019