F02K 99/00
Subject matter not provided for in other groups of this subclass
F02K99/00 (Subject matter not provided for in other groups of this subclass) appears on 40 US grants and 41 published applications in this corpus.
Search patents in F02K- Granted patents
- 40
- Published applications
- 41
- Assignees
- 30
- Inventors
- 109
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 1 | 4 |
| 2016 | 1 | 1 |
| 2017 | 2 | 2 |
| 2018 | 3 | 4 |
| 2019 | 4 | 5 |
| 2020 | 6 | 4 |
| 2021 | 3 | 2 |
| 2022 | 4 | 6 |
| 2023 | 3 | 4 |
| 2024 | 3 | 0 |
| 2025 | 2 | 0 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Carbide-based fuel assembly for thermal propulsion applications20 Jan 2026US 12,531,166 B2BWXT Nuclear Energy, Inc.
- Space propulsion system13 Jan 2026US 12,523,189 B2
- Hybrid solar thermal and chemical vehicle configurations for space mining applications13 May 2025US 12,297,792 B2Trans Astronautica Corporation
- Carbide-based fuel assembly for thermal propulsion applications11 Mar 2025US 12,249,435 B2BWXT Nuclear Energy, Inc.
- Method of flying on the moon and a device for flying on the moon5 Nov 2024US 12,134,485 B2Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences
- An arc reaction engine and method of use20 Aug 2026US 2026/0243170 A1Ace Vtol Pty Ltd
- Hybrid solar thermal and chemical vehicle configurations for space mining applications19 Mar 2026US 2026/0078718 A1Trans Astronautica Corporation
- System and methods of group combustion of core-shell thermite particles12 Mar 2026US 2026/0070857 A1
- Rocket motor with dual embedded burnable cutting explosive energetic material26 Feb 2026US 2026/0055746 A1Raytheon Company
- Carbide-based fuel assembly for thermal propulsion applications12 Oct 2023US 2023/0326618 A1BWXT Advanced Technologies LLC
Most cited
By later US patents
- Fuel-free spacecraft propelling system based on spatial atomic oxygen and propelling method10US 9,796,487 B2Beijing Institute of Spacecraft Environment Engineering · 2017
- Controlled process for the production of thermal energy from gases and apparatus useful therefore6US 4,826,581 A1989
- Rocket mining system, subsystems, components and methods5US 11,852,016 B2Astrobotic Technology, Inc. · 2023
- Engine driven by SC02 cycle with independent shafts for combustion cycle elements and propulsion elements4US 9,982,629 B2Rolls-Royce North American Technologies Inc. · 2018
- Satellite with integral thrusters3US 10,220,966 B2Raytheon Company · 2019