Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6081080 | Method and apparatus for reducing voltage stresses in electric machines | — | 2000-06-27 |
| 5949170 | Method and apparatus for reducing voltage stresses in electric machine | — | 1999-09-07 |
| 5705918 | Switched reluctance generators | — | 1998-01-06 |
| 5703457 | Power supply to a stator of a polyphase reluctance machine | — | 1997-12-30 |
| 5563487 | Control circuit for an inductive load | — | 1996-10-08 |
| 5504410 | Switching circuit | — | 1996-04-02 |
| 5449993 | Regenerative ac to dc converter | — | 1995-09-12 |
| 5008523 | Current measuring circuit with means for nullifying the effects of current source and lead resistance | Mark Greiner | 1991-04-16 |
| 4835408 | Power conversion circuit | William F. Ray | 1989-05-30 |
| 4563619 | Electric power converter circuit | William F. Ray | 1986-01-07 |
| 4387326 | Variable reluctance motor systems | William F. Ray | 1983-06-07 |
| 4360770 | Variable reluctance motor systems | William F. Ray | 1982-11-23 |
| 4348619 | Variable reluctance electric motor systems | William F. Ray | 1982-09-07 |
| 4253053 | Reluctance electric motor drive systems | William F. Ray | 1981-02-24 |