Issued Patents All Time
Showing 1–2 of 2 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, Keiko Maeda, Yasuko Noda, Kunio Kataoka, Eiichi Eto +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, Tasuku Shimoyama, Kunio Kataoka, Eiichi Eto +5 more | 1993-09-14 |