Granted Patent
Utility
US 4,334,106 · App. 06/231,789
Process for the preparation of hydroxyphenyl-indanols
Inventor:
Shenghong A. Dai
Patented Case
View Patent ↗
Granted: Jun 8, 1982
Filed: Feb 5, 1981
Inventor
Shenghong A. Dai
Assignee (at issue)
The Upjohn Co.
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.