Granted Patent
Utility
US 4,424,261 · App. 06/421,950
Hydroxyisopropylmelamine modified melamine-formaldehyde resin
Inventors:
Ronald J. Keeling, Jin-Young K. Roe, Henry C. Mollmann
Patented Case
View Patent ↗
Granted: Jan 3, 1984
Filed: Sep 23, 1982
Inventors
Ronald J. Keeling
Jin-Young K. Roe
Henry C. Mollmann
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.