Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5312989 | Method for the purification of 4,4'-diamino-diphenylmethane | Takahiro Yamamoto, Kiichi Hattori | 1994-05-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5312989 | Method for the purification of 4,4'-diamino-diphenylmethane | Takahiro Yamamoto, Kiichi Hattori | 1994-05-17 |