Inventor

COLLINS MARK ALLAN

US2 patents

Patents

2 patents

US5854249ADec 29, 1998

Opioid diarylmethylpiperazines and piperidines

DELTA PHARMACEUTICALS INC74 citations92

US5658908AAug 19, 1997

Opioid diarylmethylpiperazines and piperdines

DELTA PHARMACEUTICALS INC84 citations92