Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4941870 | Method for manufacturing a synthetic vascular prosthesis | Masao Okada, Haruo Kimura, Yoshito Ikada | 1990-07-17 |
| 4933494 | Process for purification of dihydroxydiphenylsulfone | Hiroyuki Tubota, Hiroshi Kushima, Naoki Yamamoto | 1990-06-12 |
| 4878907 | Synthetic vascular prosthesis | Masao Okada, Haruo Kimura, Yoshito Ikada | 1989-11-07 |
| 4473523 | Process for continuously producing an aromatic polyimide film | Yoshikazu Sasaki, Hiroshi Inoue, Youji Negi | 1984-09-25 |
| 4248991 | Elastic strapping band and method for producing same | Youji Negi, Kouji Iwata | 1981-02-03 |