Granted Patent
Utility
US 4,394,496 · App. 06/316,586
Epoxidation products of 1,1,1-tri-(hydroxyphenyl) alkanes
Inventor:
Paul G. Schrader
Patented Case
View Patent ↗
Granted: Jul 19, 1983
Filed: Oct 30, 1981
Inventor
Paul G. Schrader
Assignee (at issue)
THE DOW CHEMICAL 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.