Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870923 | Apparatus for treating the surfaces of wafers | — | 1989-10-03 |
| 4841624 | Method of producing a thin film magnetic head | Eisei Togawa, Saburo Suzuki, Shunichiro Kuwatsuka | 1989-06-27 |
| 4831906 | Numerical control machine | Youji Takeuchi, Shuichiro Yamashita | 1989-05-23 |
| 4824731 | Thin film magnetic head | Haruhiko Matsuyama, Fusaji Shoji, Shunichiro Kuwatsuka | 1989-04-25 |