Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5196234 | Method for preparing zinc orthosilicate phosphor particle | A. Gary Sigai, Charles F. Chenot, Henry B. Minnier | 1993-03-23 |
| 4924141 | Aluminum oxide reflector layer for fluorescent lamps | Richard L. Doucette, Gerald Fredrickson | 1990-05-08 |
| 4797594 | Reprographic aperture lamps having improved maintenance | A. Gary Sigai | 1989-01-10 |
| 4639637 | Arc discharge lamp having improved lumen maintenance | Joseph A. Roy, Jr. | 1987-01-27 |
| 4431941 | Fluorescent lamp having double phosphor layer | Joseph A. Roy, Jr. | 1984-02-14 |
| 4384237 | Fluorescent lamp containing adhesive frit in phosphor coating | Vincent Chiola, Albert K. Fan | 1983-05-17 |
| 4251750 | Fluorescent lamp for use in liquid analysis | John P. Gallien, Francis P. Mackey, Tadius T. Sadoski | 1981-02-17 |