Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876400 | Process for producing vitamin A or its carboxylic acid esters, and itermediate compounds useful for the process | Tadakatsu Mandai, Mikio Kawada | 1989-10-24 |
| 4825006 | Process for producing vitamin A or its carboxylic acid esters, and intermediate compounds useful for the process | Tadakatsu Mandai, Mikio Kawada | 1989-04-25 |