Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5695694 | Method of producing an acylated cellulose film | Masanori Abe, Utami Yonemura, Takeshi Sasaki | 1997-12-09 |
| 5645766 | Film of aromatic polyethersulfone process for the production thereof and solution composition for the production thereof | Takashi Shiro, Hideaki Nitta, Takeshi Sasaki, Utami Yonemura | 1997-07-08 |