Granted Patent
Utility
US 4,755,595 · App. 06/793,934
Enhanced production of 4,5-unsaturated steroids utilizing methanol solvation
Inventors:
Karl O. Gelotte, Chester J. Opalka, Jr.
Patented Case
View Patent ↗
Granted: Jul 5, 1988
Filed: Nov 1, 1985
Inventors
Karl O. Gelotte
Chester J. Opalka, Jr.
Assignee (at issue)
Sterling Drug, Inc.
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.