Granted Patent
Utility
US 5,885,343 · App. 08/865,722
Dyed silica pigments and products made from same
Inventors:
George J. Cernigliaro, Egon Matijevic, Daniel Y. Pai, Todd A. Richardson
Patented Case
View Patent ↗
Granted: Mar 23, 1999
Filed: May 30, 1997
Inventors
George J. Cernigliaro
Egon Matijevic
Daniel Y. Pai
Todd A. Richardson
Assignee (at issue)
Shipley Company, L.L.C.
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.