F02K 7/18
Composite ram-jet/rocket engines
F02K7/18 (Composite ram-jet/rocket engines) appears on 114 US grants and 64 published applications in this corpus.
Search patents in F02K- Granted patents
- 114
- Published applications
- 64
- Assignees
- 61
- Inventors
- 189
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 6 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 6 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 2 |
| 2003 | 3 | 0 |
| 2004 | 2 | 3 |
| 2005 | 3 | 4 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 3 |
| 2009 | 0 | 5 |
| 2010 | 2 | 1 |
| 2011 | 3 | 3 |
| 2012 | 2 | 0 |
| 2013 | 2 | 0 |
| 2014 | 1 | 3 |
| 2015 | 1 | 5 |
| 2016 | 3 | 2 |
| 2017 | 2 | 3 |
| 2018 | 1 | 2 |
| 2019 | 2 | 2 |
| 2020 | 4 | 4 |
| 2021 | 5 | 4 |
| 2022 | 3 | 7 |
| 2023 | 6 | 3 |
| 2024 | 2 | 4 |
| 2025 | 3 | 2 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Combustion mode switching engine6 Oct 2026US 12,753,730 B2PD AeroSpace, LTD.
- Thermal management for ramjet-RDRE configuration of RBCC10 Mar 2026US 12,571,361 B2Venus Aerospace Corp.
- Inlet bleed diversion through rotating detonation rocket engine24 Feb 2026US 12,560,134 B1Venus Aerospace Corp.
- Multi-mode rocket-based combined cycle23 Sep 2025US 12,421,920 B1Venus Aerospace Corp.
- Ramjet propulsion method1 Jul 2025US 12,345,217 B2
- Thermal management for ramjet-rdre configuration of rbcc28 Aug 2025US 2025/0270970 A1Venus Aerospace Corp.
- Combustion mode switching engine12 Jun 2025US 2025/0188893 A1PD AeroSpace, LTD.
- Ramjet propulsion method12 Sep 2024US 2024/0301844 A1
- Duplex Turbine Guide Vane Assembly11 Jul 2024US 2024/0229745 A9ATRX, Inc.
- Launch system and method20 Jun 2024US 2024/0199237 A1
Most cited
By later US patents
- Combination propulsion system for a flying craft92US 5,014,508 AMesserschmitt-Boelkow-Blohm GmbH · 1991
- Combined multi-speed jet engine for the drive of airplanes and space vehicles46US 4,909,031 AMTU Motoren-und Turbinen-Union Munchen GmbH · 1990
- Combination turbojet-ramjet-rocket propulsion system41US 5,052,176 ASociete Nationale d'Etude et de Construction de Moteurs d'Aviation · 1991
- Axisymmetrical annular plug propulsion system for integrated rocket/ramjet or rocket/scramjet26US 6,293,091 B1TRW Inc. · 2001
- Projectile24US 4,539,911 AThe United States of America as represented by the Secretary of the Army · 1985