F02K 9/24
Charging rocket engines with solid propellants
Official title: Charging rocket engines with solid propellants; Methods or apparatus specially adapted for working solid propellant charges
F02K9/24 (Charging rocket engines with solid propellants) appears on 87 US grants and 38 published applications in this corpus.
Search patents in F02K- Granted patents
- 87
- Published applications
- 38
- Assignees
- 38
- Inventors
- 193
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 6 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 5 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 1 | 2 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 3 |
| 2017 | 1 | 3 |
| 2018 | 1 | 8 |
| 2019 | 4 | 0 |
| 2020 | 3 | 3 |
| 2021 | 7 | 2 |
| 2022 | 1 | 2 |
| 2023 | 3 | 1 |
| 2024 | 5 | 4 |
| 2025 | 8 | 1 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rocket motor10 Feb 2026US 12,545,438 B2Cesaroni Aerospace Incorporated
- Rocket motor including an embedded charge assembly (ECA) configured to support a burn rate enhancement (BRE) wire28 Oct 2025US 12,454,929 B1Raytheon Company
- Rocket motors and methods of manufacturing rocket motors14 Oct 2025US 12,442,349 B1X-Bow Launch Systems Inc.
- Methods for rocket fuel grain coating and unitary manufacture23 Sep 2025US 12,420,339 B1X-Bow Launch Systems Inc.
- Continuous modification in a 3D-printed rocket engine and an additive manufacturing process26 Aug 2025US 12,398,685 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.
- 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.
- Rocket motors and methods of manufacturing rocket motors29 Jan 2026US 2026/0028948 A1X-Bow Launch Systems Inc.
- Propellant applied to a thruster and method of manufacturing the same10 Jul 2025US 2025/0223950 A1
Most cited
By later US patents
- Method and apparatus for cryogenic removal of solid materials30US 5,025,632 AGeneral Atomics · 1991
- Constant pressure end burning gas generator26US 4,590,860 AUnited Technologies Corporation · 1986
- Process for forming a liner and cast propellant charge in a rocket motor casing22US 4,803,019 AMorton Thiokol, Inc. · 1989
- Rocket motor construction from porous binder core17US 5,386,777 AAero-Jet General Corporation · 1995
- Winding apparatus15US 3,977,614 AImperial Metal Industries (Kynoch) Limited · 1976