Granted Patent
Utility
US 4,804,721 · App. 07/126,378
Ethers of the condensation products of phenoldicyclopentadiene adducts with aldehydes and ketones as thermosetting resins
Inventors:
Joseph J. Zupancic, Jeffrey P. Conrad
Patented Case
View Patent ↗
Granted: Feb 14, 1989
Filed: Nov 30, 1987
Inventors
Joseph J. Zupancic
Jeffrey P. Conrad
Assignee (at issue)
AlliedSignal, 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.