Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877735 | Process for producing 2-keto-L-gulonic acid | Ikuo Nogami, Masahide Oka, Hideo Shirafuji | 1989-10-31 |
| 4876195 | Process for producing 2-keto-D-glucaric acid | Hideo Shirafuji, Ikuo Nogami | 1989-10-24 |