Issued Patents All Time
Showing 25 most recent of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8423103 | Energy efficient data center | Michael J. Hennessy, Eduard K. Mueller | 2013-04-16 |
| 7619325 | Ring configuration for compact power supply of power electronics | Michael J. Hennessy, Eduard K. Mueller, John Norton Park | 2009-11-17 |
| 7408764 | Cryogenic capacitors | Eduard K. Mueller, Michael J. Hennessy | 2008-08-05 |
| 7369377 | Snubbers for low temperature power electronics | Michael J. Hennessy, John Norton Park, Eduard K. Mueller | 2008-05-06 |
| 7352233 | Efficient thyristor-type power switches | Eduard K. Mueller, Michael J. Hennessy | 2008-04-01 |
| 7193336 | Switchable low-loss cryogenic lead system | Michael J. Hennessy | 2007-03-20 |
| 7126810 | Cryogenic capacitors | Eduard K. Mueller, Michael J. Hennessy | 2006-10-24 |
| 6879852 | Low-cost magnetic resonance imaging (MRI) Cryo-system | — | 2005-04-12 |
| 6798083 | Cryogenic power conversion for fuel cell systems especially for vehicles | — | 2004-09-28 |
| 6611540 | Diode-laser system for hyperpolarized He-3 and Xe-129 gas generation and other applications | — | 2003-08-26 |
| 6545880 | Cryogenic power distribution system for large structure | — | 2003-04-08 |
| 6172550 | Cryogenically-cooled switching circuit | Calman Gold | 2001-01-09 |
| 5953224 | Control circuit for cryogenically-cooled power electronics employed in power conversion systems | Calman Gold, Ellery F. Schempp | 1999-09-14 |
| 5734565 | Reducing switching losses in series connected bridge inverters and amplifiers | Richard J. Gran | 1998-03-31 |
| 5726873 | Control circuit for cryogenically-cooled power electronics employed in power conversion systems | Calman Gold, Ellery F. Schempp | 1998-03-10 |
| 5637922 | Wireless radio frequency power semiconductor devices using high density interconnect | Raymond Albert Fillion, James F. Burgess | 1997-06-10 |
| 5625548 | Control circuit for cryogenically-cooled power electronics employed in power conversion systems | Calman Gold, Ellery F. Schempp | 1997-04-29 |
| 5545999 | Preamplifier circuit for magnetic resonance system | Christopher P. Yakymyshyn, Peter B. Roemer, Ronald Dean Watkins | 1996-08-13 |
| 5484985 | Radiofrequency ground heating system for soil remediation | William A. Edelstein, Icko T. Iben, Egidijus Uzgiris, Peter B. Roemer | 1996-01-16 |
| 5278502 | Refrigerated superconducting MR magnet with integrated cryogenic gradient coils | Evangelos Trifon Laskaris, Bizhan Dorri, Mark Ernest Vermilyea | 1994-01-11 |
| 5270657 | Split gradient amplifier for an MRI system | William F. Wirth, Thomas George McFarland, Robert M. Vavrek, Peter B. Roemer, John Norton Park | 1993-12-14 |
| 5236039 | Balanced-line RF electrode system for use in RF ground heating to recover oil from oil shale | William A. Edelstein, Harold J. Vinegar, Chia-Fu Hsu | 1993-08-17 |
| 5170337 | Low-inductance package for multiple paralleled devices operating at high frequency | Joseph C. Borowiec, Sayed-Amr El-Hamamsy | 1992-12-08 |
| 5126830 | Cryogenic semiconductor power devices | Lowell Scott Smith | 1992-06-30 |
| 5105153 | Gradient speed-up circuit for NMR system | Peter B. Roemer | 1992-04-14 |