F02K 9/10
Shape or structure of solid propellant charges
F02K9/10 (Shape or structure of solid propellant charges) appears on 202 US grants and 146 published applications in this corpus.
Search patents in F02K- Granted patents
- 202
- Published applications
- 146
- Assignees
- 91
- Inventors
- 390
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 8 | 3 |
| 2003 | 2 | 2 |
| 2004 | 1 | 1 |
| 2005 | 1 | 5 |
| 2006 | 2 | 1 |
| 2007 | 4 | 1 |
| 2008 | 0 | 3 |
| 2009 | 1 | 8 |
| 2010 | 4 | 12 |
| 2011 | 4 | 3 |
| 2012 | 7 | 5 |
| 2013 | 9 | 9 |
| 2014 | 3 | 1 |
| 2015 | 5 | 4 |
| 2016 | 5 | 6 |
| 2017 | 6 | 11 |
| 2018 | 8 | 12 |
| 2019 | 10 | 5 |
| 2020 | 12 | 12 |
| 2021 | 7 | 10 |
| 2022 | 8 | 3 |
| 2023 | 9 | 9 |
| 2024 | 14 | 5 |
| 2025 | 9 | 8 |
| 2026 | 2 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F02K 9/12Made of two or more portions burning at different rates or having53
- F02K 9/18Of the internal-burning type having a star or like shaped internal cavity52
- F02K 9/14Made from sheet-like materials27
- F02K 9/22Of the front-burning type18
- F02K 9/20Of the external-burning type8
- F02K 9/16Of honeycomb structure6
Recent patents
- Thrust vector control for hybrid propellants rocket engine with embedded fluid injection ports22 Sep 2026US 12,742,433 B2Laboratoire Reaction Dynamics Inc.
- Rocket motor10 Feb 2026US 12,545,438 B2Cesaroni Aerospace Incorporated
- Rocket engine18 Nov 2025US 12,473,875 B2The University of Tokyo
- Multistage variable burning rate solid rocket motor and forming method28 Oct 2025US 12,454,928 B2Dalian University of Technology
- Rocket motor including an embedded charge assembly (ECA) configured to support a burn rate enhancement (BRE) wire28 Oct 2025US 12,454,929 B1Raytheon Company
- 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 solid propellant grain25 Jun 2026US 2026/0176212 A1Siec Badawcza Lukasiewicz - Instytut Lotnictwa
- 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.
Most cited
By later US patents
- Nanocomposite enhanced fuel grains51US 10,501,385 B1Saint Louis University · 2019
- Propellant grain with alternating layers of encapsulated fuel and oxidizer40US 3,995,559 AE. I. Du Pont de Nemours and Company · 1976
- Gas generating charge and a process for producing the same38US 4,408,534 ANippon Oil and Fats Co., Ltd. · 1983
- Systems and methods for casting hybrid rocket motor fuel grains38US 9,429,104 B2The Aerospace Corporation · 2016
- Stereolithographic rocket motor manufacturing method34US 8,844,133 B2The Aerospace Corporation · 2014