Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847250 | Pyroglutamic acid esters used as dermal penetration enhancers for drugs | Takeru Higuchi | 1989-07-11 |
| 4847298 | Acylcarnitines as absorption-enhancing agents for drug delivery through mucous membranes of the nasal, buccal, sublingual and vaginal compartments | Joseph A. Fix, A. J. Repta | 1989-07-11 |
| 4835138 | Choline esters as absorption-enhancing agents for drug delivery through mucous membranes of the nasal, buccal, sublingual and vaginal cavities | A. J. Repta, Joseph A. Fix | 1989-05-30 |
| 4822773 | Enhancement of absorption of drugs from gastrointestinal tract using choline ester salts | Joseph A. Fix | 1989-04-18 |