F03H 1/0025
Neutralisers, i.e. means for keeping electrical neutrality
Official title: {Neutralisers, i.e. means for keeping electrical neutrality}
F03H1/0025 (Neutralisers, i.e. means for keeping electrical neutrality) appears on 37 US grants and 38 published applications in this corpus.
Search patents in F03H- Granted patents
- 37
- Published applications
- 38
- Assignees
- 38
- Inventors
- 100
- Latest grant
- 9 Sep 2025
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 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 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 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 1 | 2 |
| 2007 | 0 | 1 |
| 2008 | 0 | 2 |
| 2009 | 2 | 2 |
| 2010 | 0 | 0 |
| 2011 | 2 | 3 |
| 2012 | 2 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 2 |
| 2015 | 1 | 0 |
| 2016 | 2 | 0 |
| 2017 | 3 | 2 |
| 2018 | 0 | 2 |
| 2019 | 1 | 0 |
| 2020 | 2 | 1 |
| 2021 | 0 | 10 |
| 2022 | 4 | 2 |
| 2023 | 4 | 3 |
| 2024 | 5 | 3 |
| 2025 | 3 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Spacecraft propulsion system and method of operation9 Sep 2025US 12,410,783 B2Iceye Oy
- Systems and methods for propulsion of an object in a vacuum1 Jul 2025US 12,345,244 B2Orbital Arc Corporation
- Plasma propulsion systems and associated systems and methods28 Jan 2025US 12,209,576 B2Electric Sky Holdings, Inc.
- Neutralizer for an ion thruster of a spacecraft17 Dec 2024US 12,168,976 B2ENPULSION GmbH
- Synchronous polyphase alternating current electrostatic ion thruster (SPACE-IT) for propulsion of spacecraft, such as for example satellites, mini-rockets, etc9 Jul 2024US 12,030,673 B2
- Systems and methods for propulsion of an object in a vacuum19 Sep 2024US 2024/0309858 A1Orbital Arc Corporation
- Plasma propulsion systems and associated systems and methods30 May 2024US 2024/0175428 A1Electric Sky Holdings, Inc.
- Spacecraft propulsion system and method of operation18 Apr 2024US 2024/0125308 A1Iceye Oy
- Synchronous Polyphase Alternating Current Electrostatic Ion Thruster (SPACE-IT) for propulsion of spacecraft, such as for example satellites, mini-rockets, etc.2 Nov 2023US 2023/0348114 A1
- Charging mitigation device and electric discharge avoidance method2 Nov 2023US 2023/0349369 A1Japan Aerospace Exploration Agency
Most cited
By later US patents
- Compact high current rare-earth emitter hollow cathode for hall effect thrusters32US 8,143,788 B2California Institute of Technology · 2012
- Hall effect electric propulsion system29US 6,449,941 B1Lockheed Martin Corporation · 2002
- Field-ionization based electrical space ion thruster using a permeable substrate21US 9,194,379 B1The United States of America as represented by the Secretary of the Navy · 2015
- Electron-bombardment ion sources18US 3,956,666 AIon Tech Limited · 1976
- Hybrid electrostatic space tug12US 8,210,480 B22012