Granted Patent
Utility
US 4,508,591 · App. 06/587,348
Polymethyl methacrylate compatible silicon dioxide complexing agent
Inventors:
Keith G. Bartlett, Mary A. Caolo
Patented Case
View Patent ↗
Granted: Apr 2, 1985
Filed: Mar 8, 1984
Inventors
Keith G. Bartlett
Mary A. Caolo
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.