Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869927 | Light diffusive coating, a method of forming the coating and a lamp having the coating | Akira Kawakatsu, Toshio Karino | 1989-09-26 |
| 4721877 | Light diffusive coating and a lamp having the coating | Akira Kawakatsu, Toshio Karino | 1988-01-26 |
| 4701663 | Lamp having interference film | Akira Kawakatsu, Noriyuki Hayama, Tokuyoshi Saito, Umio Maeda | 1987-10-20 |
| 4634919 | Bulb | Ariyoshi Ishizaki, Tokuyoshi Saito, Takeshi Ishii | 1987-01-06 |