Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4479074 | High intensity vapor discharge lamp with sintering aids for electrode emission materials | — | 1984-10-23 |
| 4475065 | Method of operating HID sodium lamp to minimize lamp voltage variation throughout lamp life | Jose E. Tallet, Robert T. Elms | 1984-10-02 |
| 4435669 | Arc tube construction | Vernon L. Plagge | 1984-03-06 |
| 4321503 | HID Lamp electrode comprising barium-calcium niobate or tantalate | — | 1982-03-23 |
| 4291250 | Arc discharge tube end seal | — | 1981-09-22 |
| 4230964 | Color high-pressure sodium vapor lamp | — | 1980-10-28 |
| 4210840 | HID Lamp emission material | — | 1980-07-01 |