B64G 1/401
Liquid propellant rocket engines
Official title: {Liquid propellant rocket engines (Ion or plasma engines B64G1/413; Arcjets and other resistojets B64G1/415)}
B64G1/401 (Liquid propellant rocket engines) appears on 400 US grants and 309 published applications in this corpus.
Search patents in B64G- Granted patents
- 400
- Published applications
- 309
- Assignees
- 180
- Inventors
- 839
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 8 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 0 | 0 |
| 1992 | 9 | 0 |
| 1993 | 13 | 0 |
| 1994 | 6 | 0 |
| 1995 | 6 | 0 |
| 1996 | 7 | 0 |
| 1997 | 4 | 0 |
| 1998 | 10 | 0 |
| 1999 | 6 | 0 |
| 2000 | 16 | 0 |
| 2001 | 8 | 1 |
| 2002 | 13 | 5 |
| 2003 | 12 | 8 |
| 2004 | 10 | 4 |
| 2005 | 6 | 6 |
| 2006 | 6 | 3 |
| 2007 | 2 | 4 |
| 2008 | 2 | 3 |
| 2009 | 3 | 8 |
| 2010 | 4 | 13 |
| 2011 | 4 | 5 |
| 2012 | 5 | 6 |
| 2013 | 4 | 6 |
| 2014 | 12 | 12 |
| 2015 | 12 | 18 |
| 2016 | 18 | 25 |
| 2017 | 9 | 17 |
| 2018 | 8 | 17 |
| 2019 | 15 | 12 |
| 2020 | 17 | 12 |
| 2021 | 23 | 17 |
| 2022 | 17 | 26 |
| 2023 | 21 | 23 |
| 2024 | 32 | 24 |
| 2025 | 16 | 12 |
| 2026 | 18 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Thruster propellants15 Sep 2026US 12,735,368 B2The United States of America as represented by the Secretary of the Air Force
- Spacecraft-borne propulsion device with gas heating and gas storage18 Aug 2026US 12,709,412 B2Tohoku University
- Systems and methods for design, manufacture, and test of space thruster propulsion systems11 Aug 2026US 12,704,101 B2Agile Space Industries, Inc.
- Reusable space transportation system28 Jul 2026US 12,692,027 B2Arianegroup SAS
- Geometry optimized low aspect ratio VTOL vehicle system with structurally integrated propulsion28 Jul 2026US 12,692,825 B2Monostage Space Inc.
- Omnivorous solar thermal thruster, cooling systems, and thermal energy transfer in rockets24 Sep 2026US 2026/0286917 A1Trans Astronautica Corporation
- Systems and Methods for Deploying Launch Vehicle Landing Equipment10 Sep 2026US 2026/0264888 A1Relativity Space, Inc.
- Separation device for cryogenic propellant tanks of rocket stages6 Aug 2026US 2026/0225736 A1Arianegroup SAS
- Directing light for thermal and power applications in space30 Jul 2026US 2026/0217388 A1Trans Astronautica Corporation
- Refueling system for a spacecraft, and method for filling a fuel tank of a spacecraft16 Jul 2026US 2026/0200602 A1Gate Space Innovation GmbH
Most cited
By later US patents
- Synthetic jet actuator and applications thereof162US 5,758,823 AGeorgia Tech Research Corporation · 1998
- Method for extending the useful life of a space satellite113US 5,511,748 A1996
- Multiple usage thruster mounting configuration91US 6,032,904 ASpace Systems/Loral, Inc. · 2000
- Micromachined synthetic jet actuators and applications thereof91US 6,457,654 B1Georgia Tech Research Corporation · 2002
- Synthetic jet actuators for modifiying the direction of fluid flows89US 5,988,522 AGeorgia Tech Research Corporation · 1999