Inventor

CULWELL JOHN

US2 patents

Patents

2 patents

US6835194B2Dec 28, 2004

Implantable devices and methods for treatment of pain by delivery of fentanyl and fentanyl congeners

DURECT CORP148 citations95

US7648496B2Jan 19, 2010

Device and method for accurate delivery of an active agent

DURECT CORP1 citations43