Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8614316 | Optically active quaternary ammonium salt having axial asymmetry and process for producing α-amino acid and derivative thereof with the same | Keiji Maruoka, Kenichiro Yamamoto | 2013-12-24 |
| 8263798 | Optically active quaternary ammonium salt having axial asymmetry, and method for producing alpha-amino acid and derivative thereof by using the same | Keiji Maruoka, Kenichiro Yamamoto | 2012-09-11 |
| 8252952 | Optically active quaternary ammonium salt having axial asymmetry, and method for producing alpha-amino acid and derivative thereof by using the same | Keiji Maruoka, Kenichiro Yamamoto | 2012-08-28 |
| 8110680 | Optically active quaternary ammonium salt having axial asymmetry, and method for producing alpha-amino acid and derivative thereof by using the same | Keiji Maruoka, Kenichiro Yamamoto | 2012-02-07 |