Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5358538 | Process for production of black coloring material and cosmetics containing said black coloring material and use thereof | Susumu Shimoyama, Ujo Maeda, Keiko Maeda, Yasuko Noda, Kunio Kataoka +2 more | 1994-10-25 |
| 5244469 | Process for preparation of black coloring materials and application thereof: chitosan treated with black extract of lithospermum root | Susumu Shimoyama, Yasuko Noda, Ujo Maeda, Tasuku Shimoyama, Kunio Kataoka +5 more | 1993-09-14 |
| 4804750 | Production of water-soluble chitin-oligomers by partial hydrolysis of chitin | Tatsumi Nishimura, Toyofumi Yamada | 1989-02-14 |