F03H 1/005
Using field emission
Official title: {using field emission, e.g. Field Emission Electric Propulsion [FEEP]}
F03H1/005 (Using field emission) appears on 32 US grants and 36 published applications in this corpus.
Search patents in F03H- Granted patents
- 32
- Published applications
- 36
- Assignees
- 24
- Inventors
- 76
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 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 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 1 |
| 2010 | 1 | 3 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 2 | 1 |
| 2014 | 0 | 1 |
| 2015 | 2 | 0 |
| 2016 | 0 | 2 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 3 | 1 |
| 2020 | 1 | 4 |
| 2021 | 0 | 4 |
| 2022 | 4 | 7 |
| 2023 | 4 | 4 |
| 2024 | 5 | 2 |
| 2025 | 5 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Ionic thruster methods and apparatus for aircraft7 Apr 2026US 12,595,785 B2The Boeing Company
- Electrospray emission apparatus7 Oct 2025US 12,435,709 B2Accion Systems, Inc.
- Systems and methods for propulsion of an object in a vacuum1 Jul 2025US 12,345,244 B2Orbital Arc Corporation
- System and method for magnetically induced electrospray thrusters20 May 2025US 12,303,925 B2University of Southern California
- Liquid metal ion source20 May 2025US 12,308,197 B2ENPULSION GmbH
- Ion source and method for operating the same14 May 2026US 2026/0132774 A1ENPULSION GmbH
- Integrated ion thruster unit for a spacecraft30 Oct 2025US 2025/0334106 A1Accion Systems Inc., dba Revolution Space
- Ionic thruster methods and apparatus for aircraft28 Aug 2025US 2025/0270984 A1The Boeing Company
- Systems and methods for propulsion of an object in a vacuum19 Sep 2024US 2024/0309858 A1Orbital Arc Corporation
- Electrospray emission apparatus8 Aug 2024US 2024/0263623 A1Accion Systems, Inc.
Most cited
By later US patents
- Field-emission ion source and ion thruster apparatus comprising such sources29US 4,328,667 AThe European Space Research Organisation · 1982
- Unified chemical electric propulsion system11US 9,145,216 B2Space Systems/Loral, Inc. · 2015
- Scalable flat-panel nano-particle MEMS/NEMS thruster8US 7,516,610 B2The Regents of the University of Michigan · 2009
- System and method for power conversion7US 10,312,820 B2Accion Systems, Inc. · 2019
- System and method for power conversion3US 11,356,027 B2Accion Systems, Inc. · 2022