Issued Patents All Time
Showing 1–25 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12334310 | High current heaterless hollow cathode | Adele R. Payman | 2025-06-17 |
| 12078153 | Thermally managed electric propulsion systems | Scott N. Roberts, Sean W. Reilly, Robert P. Dillon, Benjamin I. Furst | 2024-09-03 |
| 11482395 | Heaterless hollow cathode | Ryan W. Conversano, Giulia Becatti | 2022-10-25 |
| 10954005 | Power train for deep space solar electric propulsion | Peter W. Lord, Gregory Alan Carr, Jorge Delgado, Bao Hoang, David Oh +3 more | 2021-03-23 |
| 10919649 | Low-power hall thruster with an internally mounted low-current hollow cathode | Ryan W. Conversano, Ira R. Katz, Richard R. Hofer | 2021-02-16 |
| 10723489 | Low-power hall thruster with an internally mounted low-current hollow cathode | Ryan W. Conversano, Ira R. Katz, Richard R. Hofer | 2020-07-28 |
| 10082133 | Hall thruster with magnetic discharge chamber and conductive coating | — | 2018-09-25 |
| 9874202 | Metallic wall hall thrusters | Richard R. Hofer, Ioannis G. Mikellides | 2018-01-23 |
| 9453502 | Metallic wall hall thrusters | Richard R. Hofer, Ioannis G. Mikellides | 2016-09-27 |
| 8143788 | Compact high current rare-earth emitter hollow cathode for hall effect thrusters | Richard R. Hofer, Ronnie M. Watkins | 2012-03-27 |
| 6324041 | Protection circuit for traveling wave tubes having multiple input tones | David E. Lewis, Ronglin Liou | 2001-11-27 |
| 6094009 | High efficiency collector for traveling wave tubes with high perveance beams using focusing lens effects | — | 2000-07-25 |
| 5942852 | Efficient, highly linear traveling wave tube using collector with high backstreaming current under saturated drive | Edward Allen Adler, William L. Menninger | 1999-08-24 |
| 5932971 | Optimally designed traveling wave tube for operation backed off from saturation | Edward Allen Adler | 1999-08-03 |
| 5828176 | Planar crossed-field plasma switch and method | — | 1998-10-27 |
| 5694005 | Plasma-and-magnetic field-assisted, high-power microwave source and method | — | 1997-12-02 |
| 5668442 | Plasma-assisted tube with helical slow-wave structure | Jennifer M. Butler, Robert L. Eisenhart | 1997-09-16 |
| 5663694 | Triggered-plasma microwave switch and method | Joseph Santoru, Robert L. Poeschel, John W. Gerstenberg | 1997-09-02 |
| 5656141 | Apparatus for coating substrates | Hans-Georg Betz, Gregor A. Campbell, Robert W. Conn, Karl Matl, Peter Sommerkamp +1 more | 1997-08-12 |
| 5607509 | High impedance plasma ion implantation apparatus | Robert W. Schumacher, Jesse N. Matossian | 1997-03-04 |
| 5608297 | Plasma switch and switching method with fault current interruption | — | 1997-03-04 |
| 5537005 | High-current, low-pressure plasma-cathode electron gun | Robert W. Schumacher | 1996-07-16 |
| 5336975 | Crossed-field plasma switch with high current density axially corrogated cathode | Robert L. Poeschel, Ronnie M. Watkins | 1994-08-09 |
| 5330800 | High impedance plasma ion implantation method and apparatus | Robert W. Schumacher, Jesse N. Matossian | 1994-07-19 |
| 5329205 | High voltage crossed-field plasma switch | Robert L. Poeschel, Ronnie M. Watkins | 1994-07-12 |