Granted Patent
Utility
US 4,306,930 · App. 06/087,279
Metal deactivators as adhesion promotors for vulcanizable elastomers to metals
Inventors:
George K. Cowell, David J. Cherry
Patented Case
View Patent ↗
Granted: Dec 22, 1981
Filed: Oct 22, 1979
Inventors
George K. Cowell
David J. Cherry
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.