Granted Patent
Utility
US 4,667,037 · App. 06/742,069
Dealkylation of opioid ethers
Inventor:
Walter M. Bryant, III
Patented Case
View Patent ↗
Granted: May 19, 1987
Filed: Jun 6, 1985
Inventor
Walter M. Bryant, III
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.