Granted Patent
Utility
US 4,504,372 · App. 06/471,557
Acid-curable composition containing a masked curing catalyst, and a process for its preparation
Inventors:
Rudolf Kirchmayr, Werner Rutsch
Patented Case
View Patent ↗
Granted: Mar 12, 1985
Filed: Mar 2, 1983
Inventors
Rudolf Kirchmayr
Werner Rutsch
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.