Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818809 | Aromatic sulfide amide polymer and a process for the production thereof | Yozo Kondo | 1989-04-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818809 | Aromatic sulfide amide polymer and a process for the production thereof | Yozo Kondo | 1989-04-04 |