Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5277960 | Substrate for magnetic recording medium and process of producing the same | Toshiro Takahashi | 1994-01-11 |
| 5209837 | Process for preparing magnetic disk | Tadao Tokushima, Toshiro Takahashi | 1993-05-11 |
| 5108812 | Substrate for a magnetic disk and process for its production | Toshiro Takahashi, Tadao Tokushima | 1992-04-28 |
| 5074971 | Process for preparing magnetic disk | Tadao Tokushima, Toshiro Takahashi | 1991-12-24 |
| 5047274 | Annodized aluminum substrate for a magnetic recording disk in which pores are filled with a non magnetic material and the surface polished and etched | Tadao Tokushima, Toshiro Takahashi | 1991-09-10 |
| 4925738 | Substrate for a magnetic disk and process for its production | Tadao Tokushima, Toshiro Takahashi | 1990-05-15 |
| 4682206 | Thin ribbon of semiconductor material | Kenichi Arai | 1987-07-21 |
| 4525223 | Method of manufacturing a thin ribbon wafer of semiconductor material | Kenichi Arai | 1985-06-25 |
| 4523966 | Process of producing silicon ribbon with p-n junction | Kenichi Arai, Toshio Takeuchi | 1985-06-18 |
| 4363769 | Method for manufacturing thin and flexible ribbon wafer of _semiconductor material and ribbon wafer | Kenichi Arai | 1982-12-14 |
| 4339508 | Method for manufacturing a thin and flexible ribbon of superconductor material | Kenichi Arai | 1982-07-13 |
| 4265682 | High silicon steel thin strips and a method for producing the same | Kenichi Arai | 1981-05-05 |
| 4264882 | Electric signal transmission device employing a ferromagnetic amorphous ribbon | Kenichi Arai, Hiroshi Shimizu, Tsuyoshi Masumoto | 1981-04-28 |
| 4257830 | Method of manufacturing a thin ribbon of magnetic material | Kenichi Arai | 1981-03-24 |
| 4244722 | Method for manufacturing thin and flexible ribbon of dielectric material having high dielectric constant | Kenichi Arai | 1981-01-13 |