Granted Patent
Utility
US 4,458,062 · App. 06/466,172
Continuously produced melt reacted melamine-formaldehyde resins
Inventors:
Elmer P. Blasing, Ronald J. Keeling
Patented Case
View Patent ↗
Granted: Jul 3, 1984
Filed: Feb 14, 1983
Inventors
Elmer P. Blasing
Ronald J. Keeling
Assignee (at issue)
American Cyanamid 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.