F02K 9/08
Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor: using solid
Official title: using solid propellants (F02K9/72 takes precedence; using semi-solid or pulverulent propellants F02K9/70)
F02K9/08 (Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor: using solid) appears on 756 US grants and 454 published applications in this corpus.
Search patents in F02K- Granted patents
- 756
- Published applications
- 454
- Assignees
- 256
- Inventors
- 1,345
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 23 | 0 |
| 1977 | 8 | 0 |
| 1978 | 18 | 0 |
| 1979 | 7 | 0 |
| 1980 | 6 | 0 |
| 1981 | 5 | 0 |
| 1982 | 11 | 0 |
| 1983 | 7 | 0 |
| 1984 | 11 | 0 |
| 1985 | 12 | 0 |
| 1986 | 15 | 0 |
| 1987 | 18 | 0 |
| 1988 | 24 | 0 |
| 1989 | 19 | 0 |
| 1990 | 15 | 0 |
| 1991 | 16 | 0 |
| 1992 | 16 | 0 |
| 1993 | 8 | 0 |
| 1994 | 14 | 0 |
| 1995 | 15 | 0 |
| 1996 | 7 | 0 |
| 1997 | 8 | 0 |
| 1998 | 21 | 0 |
| 1999 | 8 | 0 |
| 2000 | 12 | 0 |
| 2001 | 7 | 1 |
| 2002 | 18 | 8 |
| 2003 | 9 | 10 |
| 2004 | 11 | 13 |
| 2005 | 7 | 15 |
| 2006 | 14 | 14 |
| 2007 | 10 | 7 |
| 2008 | 7 | 7 |
| 2009 | 12 | 21 |
| 2010 | 16 | 25 |
| 2011 | 11 | 15 |
| 2012 | 12 | 14 |
| 2013 | 23 | 23 |
| 2014 | 16 | 18 |
| 2015 | 12 | 19 |
| 2016 | 19 | 20 |
| 2017 | 20 | 25 |
| 2018 | 16 | 40 |
| 2019 | 25 | 14 |
| 2020 | 40 | 33 |
| 2021 | 24 | 28 |
| 2022 | 26 | 19 |
| 2023 | 26 | 21 |
| 2024 | 28 | 14 |
| 2025 | 14 | 17 |
| 2026 | 9 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F02K 9/32Constructional parts470
- F02K 9/10Shape or structure of solid propellant charges202
- F02K 9/26Burning control91
- F02K 9/24Charging rocket engines with solid propellants87
- F02K 9/28Having two or more propellant charges with the propulsion gases exhausting through75
- F02K 9/30With the propulsion gases exhausting through a plurality of nozzles26
Recent patents
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- Thruster propellants15 Sep 2026US 12,735,368 B2The United States of America as represented by the Secretary of the Air Force
- Lightweight structural battery use in laser rocket18 Aug 2026US 12,710,022 B1
- Modular rocket motors and methods of making modular rocket motors4 Aug 2026US 12,698,749 B1X-Bow Launch Systems Inc.
- Ignition device, method for producing the same, ignition method and rocket combustion system19 May 2026US 12,631,156 B2National University Corporation Hokkaido University
- 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
- Additive Manufacturing Composite Rocket Motor Case10 Sep 2026US 2026/0264878 A1
- Displacement controlled joint30 Jul 2026US 2026/0218669 A1Northrop Grumman Systems Corporation
- Joint for Rocket Motor16 Jul 2026US 2026/0201853 A1Ursa Major Technologies, Inc.
Most cited
By later US patents
- Assembly including tubular bodies and mated with a compression loaded adhesive bond117US 5,984,369 ACordant Technologies Inc. · 1999
- Payload housing and assembly joint for a launch vehicle77US 5,743,492 ALockheed Martin Corporation · 1998
- Method and apparatus for providing an insensitive munition54US 5,311,820 AThiokol Corporation · 1994
- Nanocomposite enhanced fuel grains51US 10,501,385 B1Saint Louis University · 2019
- Combusting device for generation of a combustion gas49US 4,249,673 ANissan Motor Co., Ltd. · 1981