Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5013775 | Sizing composition and sizing method | Hideo Oikawa, Masatomi Ogawa, Kiyoshi Iwai | 1991-05-07 |
| 4717758 | Papermaking additive | Masatomi Ogawa | 1988-01-05 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5013775 | Sizing composition and sizing method | Hideo Oikawa, Masatomi Ogawa, Kiyoshi Iwai | 1991-05-07 |
| 4717758 | Papermaking additive | Masatomi Ogawa | 1988-01-05 |