Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861737 | Ceramic translucent material, method of manufacturing such a material and high-pressure discharge lamp provided with such a material | Leonardus Josephus van Ijzendoorn | 1989-08-29 |
| 4699774 | Gas-tight sintered translucent aluminum oxide and method | Gerardus H. M. Siebers | 1987-10-13 |
| 4620131 | Lamp with discharge vessel made of densely sintered translucent aluminium oxide | — | 1986-10-28 |