Issued Patents All Time
Showing 51–54 of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5208307 | Optical material | Toru Doi | 1993-05-04 |
| 5104428 | Separation membrane | Toru Doi, Takayuki Otsu, Akikazu Matsumoto | 1992-04-14 |
| 5043400 | Production of composite resins | Akeharu Tsuruta, Hisato Kawaguchi, Yozo Kondo | 1991-08-27 |
| 4818809 | Aromatic sulfide amide polymer and a process for the production thereof | Yozo Kondo | 1989-04-04 |