Granted Patent
Utility
US 4,535,150 · App. 06/677,711
Process for preparing epoxy resins having low hydrolyzable chlorine contents
Inventor:
Joe Hunter
Patented Case
View Patent ↗
Granted: Aug 13, 1985
Filed: Dec 4, 1984
Inventor
Joe Hunter
Assignee (at issue)
Celanese GmbH
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.