Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4829716 | Apparatus for automatically performing plural sequential spherical grinding operations on workpieces | Shuji Ueda, Kunio Nakata, Kazuhiko Fujino | 1989-05-16 |
| 4822540 | Process for the preparation of a porous regenerated cellulose hollow fiber | Seiichi Manabe, Michitaka Iwata | 1989-04-18 |