Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4947277 | System for checking the opening and closing function of cassette cover | — | 1990-08-07 |
| 4933566 | Method of detecting tape defects | Sakaguchi Masaaki | 1990-06-12 |
| 4909455 | Method and device for winding magnetic tape using magnetic alignment | Masaaki Sakaguchi, Keisuke Wakatsuki, Mitsunobu Usui | 1990-03-20 |
| 4899245 | Method of checking magnetic tape cassette lid opening operation | — | 1990-02-06 |
| 4897540 | Apparatus for detecting the presence or absence of overlap at tape joints | Masaaki Sakaguchi | 1990-01-30 |
| 4870291 | Splice inspection method and apparatus using light inclined at a prescribed angle | Youichi Hayashi, Masaaki Sakaguchi | 1989-09-26 |
| 4864122 | Joint inspection apparatus for determining the size of a gap | Sakaguchi Masaaki | 1989-09-05 |
| 4842210 | Method and device for winding magnetic tape using magnetic alignment | Masaaki Sakaguchi | 1989-06-27 |
| 4838496 | Magnetic tape loading method and apparatus | Masaaki Sakaguchi | 1989-06-13 |
| 4789110 | Method and device for winding magnetic tape using magnetic alignment | Masaaki Sakaguchi | 1988-12-06 |
| 4783020 | Magnetic tape winding device using magnetic edge alignment | Masaaki Sakaguchi | 1988-11-08 |
| 4566647 | Decorative winding method for magnetic tape or the like | Shoji Iwamoto | 1986-01-28 |
| 4334931 | Method for producing asbestos free machinable calcium silicate high heat-resistant material | Hiroshi Asaumi, Hisanori Yokoo, Mitsuo Yamamoto | 1982-06-15 |