Granted Patent
Utility
US 4,785,062 · App. 06/636,419
Reaction product of O-epoxyalkylated tetrakis(hydroxyphenyl)ethane resin and phenol with product having no remaining epoxy groups
Inventor:
Alan R. Browne
Patented Case
View Patent ↗
Granted: Nov 15, 1988
Filed: Jul 31, 1984
Inventor
Alan R. Browne
Assignee (at issue)
W.R. Grace & Co. Conn.
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.