Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5665574 | Method for preparing N-acetylneuraminic acid | Yasuhiro Ohta | 1997-09-09 |
| 5637690 | Sulfate of n-acetylneuraminic acid homopolymer and processes for making and using the same | Jang Ho Lee, Yasuhiro Ota | 1997-06-10 |