Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876144 | Single crystal thin film | Kazumasa Takagi, Toshio Kobayashi, Takanobu Takayama, Norio Ohta | 1989-10-24 |
| 4842917 | Magnetic recording medium and process for producing the same | Tomoyuki Ohno, Yoshihiro Shiroishi, Sadao Hishiyama, Hiroyuki Suzuki, Takaaki Shirakura +5 more | 1989-06-27 |
| 4803392 | Piezoelectric transducer | Keiko Kushida, Hiroshi Takeuchi, Toshio Kobayashi, Kazumasa Takagi | 1989-02-07 |