Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7772750 | Large PAR lamp exhibiting excellent color with improved efficacy and life | David Lovett | 2010-08-10 |
| 7759871 | High temperature seal for electric lamp | Ashfaqul Islam Chowdhury, Barry Preston, Rajasingh Israel, Tianji Zhao | 2010-07-20 |
| 6633112 | Filament array for incandescent lamp | Andrew Davies | 2003-10-14 |
| 5542857 | Lamps and lamp holders in display lighting | Richard A. Felstead, Douglas G. L. Lee, Lawrence C. Barling, Anthony J. Barrell | 1996-08-06 |
| 5467259 | Decorative lamp | Richard A. Felstead | 1995-11-14 |
| D341219 | Lamp | Richard A. Felstead, Luciano Zucchi | 1993-11-09 |
| D333188 | Lamp | Richard A. Felstead, Luciano Zucchi | 1993-02-09 |
| D326532 | Lamp | Richard A. Felstad, Luciano Zucchi | 1992-05-26 |
| D326161 | Lamp | Richard A. Felstead, Luciano Zucchi | 1992-05-12 |
| D325994 | Lamp | Richard A. Felstead, Luciano Zucchi | 1992-05-05 |
| 4743802 | Tungsten halogen incandescent lamp with arc preventing fill | Ian Connor | 1988-05-10 |
| 4739219 | Electric lamp with pinch sealed outer conductor of non-highly refractory material | — | 1988-04-19 |
| 4710677 | Incandescent lamps | Alex L. Halberstadt | 1987-12-01 |