Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847143 | Binder composition and nonwoven fabrics and impregnated papers using the same | Katsuyoshi Watanabe, Takeo Oyamada | 1989-07-11 |
| 4695407 | Method for purifying 1-aminoanthraquinone | Norio Kotera, Masatoshi Uegaki, Masakatsu Yoshimura, Shinzaburo Masaki, Tatsuo Kaneoya +2 more | 1987-09-22 |
| 4323431 | Purification of compounds having high melting point | Masatoshi Takahashi, Norio Kotera, Masatoshi Uegaki, Yuzo Maegawa | 1982-04-06 |