Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849055 | Process for making paper using a substituted succinic anhydride as a sizing agent | Shigehiko Yoshioka, Hideto Yamada, Hisatake Sato | 1989-07-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849055 | Process for making paper using a substituted succinic anhydride as a sizing agent | Shigehiko Yoshioka, Hideto Yamada, Hisatake Sato | 1989-07-18 |