Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5002009 | Furnace for formation of black oxide film on the surface of thin metal sheet and method for formation of black oxide film on the surface of shadow mask material by use of said furnace | Toshitomo Hayami, Katsumi Iguchi, Hisao Inoue, Takashi Ono, Takashi Ishimoto | 1991-03-26 |
| 4859251 | Furnace for formation of black oxide film on the surface of thin metal sheet and method for formation of black oxide film on the surface of shadow mask material by use of said furnace | Toshitomo Hayami, Katsumi Iguchi, Hisao Inoue, Takashi Ono, Takashi Ishimoto | 1989-08-22 |
| 4740980 | Gas laser device | Toshiharu Shirakura, Hiroyuki Sugawara, Shigeo Shiono, Minoru Suzuki | 1988-04-26 |