Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5344782 | Assay method for the determination of lithium with novel substituted crown dyes | Cheng-I Lin | 1994-09-06 |
| 5328828 | Compositions and methods for determining the presence of amphetamines in a sample suspected of containing amphetamine and/or methamphetamine | Mae W. Hu, Cheng-I Lin, Chen-Jung Hsu, James Vincent Freeman, Edwin F. Ullman | 1994-07-12 |