Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837361 | A process for the preparation of cysteine from cystine | David Liu, Elizabeth A. Griffiths, David Littlejohn | 1989-06-06 |
| 4810474 | Method of removing nitrogen monoxide from a nitrogen monoxide-containing gas using a water-soluble iron ion-dithiocarbamate, xanthate or thioxanthate | David Liu | 1989-03-07 |