B64G 1/413
Ion or plasma engines
Official title: {Ion or plasma engines}
B64G1/413 (Ion or plasma engines) appears on 326 US grants and 340 published applications in this corpus.
Search patents in B64G- Granted patents
- 326
- Published applications
- 340
- Assignees
- 152
- Inventors
- 705
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 0 |
| 2002 | 6 | 1 |
| 2003 | 5 | 6 |
| 2004 | 4 | 5 |
| 2005 | 3 | 3 |
| 2006 | 3 | 8 |
| 2007 | 7 | 9 |
| 2008 | 5 | 8 |
| 2009 | 7 | 10 |
| 2010 | 2 | 4 |
| 2011 | 2 | 8 |
| 2012 | 4 | 9 |
| 2013 | 5 | 7 |
| 2014 | 7 | 12 |
| 2015 | 14 | 15 |
| 2016 | 21 | 18 |
| 2017 | 14 | 18 |
| 2018 | 19 | 23 |
| 2019 | 18 | 18 |
| 2020 | 19 | 26 |
| 2021 | 18 | 22 |
| 2022 | 14 | 21 |
| 2023 | 27 | 26 |
| 2024 | 30 | 27 |
| 2025 | 35 | 12 |
| 2026 | 11 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Near zero-mass change propulsion system for interplanetary and interstellar spacecraft1 Sep 2026US 12,722,807 B2
- Spacecraft-borne propulsion device with gas heating and gas storage18 Aug 2026US 12,709,412 B2Tohoku University
- Pulsed-plasma-discharge engine and its method of operation18 Aug 2026US 12,710,021 B2Sharp Pulse Corp.
- Drone systems and methods14 Jul 2026US 12,679,536 B2Duplicent, LLC
- Turbomolecular air-scoop for satellite air-breathing electric propulsion16 Jun 2026US 12,655,813 B2Viridian Space Corporation
- Use of a new type of propellant for electric propulsion8 Oct 2026US 2026/0307826 A1Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Drone systems and methods17 Sep 2026US 2026/0274409 A1Duplicent, LLC
- Electric thruster with protective coating on thermionic emitter10 Sep 2026US 2026/0264890 A1Aerojet Rocketdyne, Inc.
- Electric thruster with hexaboride emitter10 Sep 2026US 2026/0266270 A1Aerojet Rocketdyne, Inc.
- System and method for real-time machine learning control of plasma osciallations in hall thrusters3 Sep 2026US 2026/0258793 A1Georgia Tech Research Corporation
Most cited
By later US patents
- System, method and apparatus for lean combustion with plasma from an electrical arc107US 8,074,439 B2Foret Plasma Labs, LLC · 2011
- Optimal transfer orbit trajectory using electric propulsion54US 5,595,360 AHughes Aircraft Company · 1997
- Constant sun angle transfer orbit sequence and method using electric propulsion54US 5,716,029 AHughes Electronics Corporation · 1998
- Spacecraft with modulated thrust electrostatic ion thruster and associated method51US 4,825,646 AHughes Aircraft Company · 1989
- Redundant system for satellite inclination control with electric thrusters47US 6,565,043 B1The Boeing Company · 2003