Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889442 | Writing instrument with ink quantity of level detecting function | Toshiaki Serikawa, Noriaki Tsunoda | 1989-12-26 |
| 4866612 | Imaging system including means to provide a display image with shadows and three dimensional perspectives by a combination of voxel and surface method | Yoshihiro Goto, Kazuhiro Sato, Yoshikazu Okudo, Osamu Takiguchi | 1989-09-12 |
| 4852635 | Method of electromagnetic stirring in continuous metal casting process | Toshiyasu Onishi, Kenzo Ayata, Yasuo Suzuki, Yasuhiko Ohta, Takao Shiozawa +2 more | 1989-08-01 |
| 4835069 | Magnetic recording medium | Takeshi Sawada, Akira Shinmi, Kenji Suzuki, Fumio Kishi, Susumu Kozuki | 1989-05-30 |
| 4816351 | Magnetic recording medium | Morimi Hashimoto, Kenji Suzuki | 1989-03-28 |
| 4800493 | Electronic cash register | — | 1989-01-24 |