Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6759805 | Circular filament lamp | Francis Gerard de Cort | 2004-07-06 |
| 6469426 | Incandescent lamp having a helical coil that comprises multiple sections of different pitches | Paul Anthony Grazier, Anthony John Perrin, Kantilal Mistry, Francis Decort | 2002-10-22 |
| 4827188 | Hydrogen getter and method of manufacture | — | 1989-05-02 |
| 4806828 | High pressure sodium discharge lamps with hydrogen getter | — | 1989-02-21 |