Granted Patent
Utility
US 5,637,500 · App. 08/311,885
Process for preparing optically active alpha-hydroxyalkene derivatives
Inventor:
Charles J. Sih
Patented Case
View Patent ↗
Granted: Jun 10, 1997
Filed: Sep 26, 1994
Inventor
Charles J. Sih
Assignee (at issue)
SUNTORY HOLDINGS LIMITED
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.