Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879294 | Opthalmic composition | — | 1989-11-07 |
| 4879304 | Ophthalmic compositions and process for preparing | — | 1989-11-07 |
| 4866083 | 2-t-butyl-3 alkyl-5-(m-hydroxyphenyl)-1,3-oxazolidines having mydriatic effect | Du-Shieng Chien | 1989-09-12 |
| 4820737 | Lacrimal secretion stimulant (lss) | Charles F. Barfknecht | 1989-04-11 |