Granted Patent
Utility
US 4,262,033 · App. 06/081,948
Process for advancing highly methylated methylolguanamines with triazines ureas or biscarbamates
Inventors:
Derek J. R. Massy, Kenneth Winterbottom
Patented Case
View Patent ↗
Granted: Apr 14, 1981
Filed: Oct 4, 1979
Inventors
Derek J. R. Massy
Kenneth Winterbottom
Assignee (at issue)
Ciba-Geigy
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.