Granted Patent
Utility
US 6,232,367 · App. 09/413,762
Opalescent fillers for dental restorative composites
Inventors:
Alvin Kobashigawa, Christos Angeletakis
Patented Case
View Patent ↗
Granted: May 15, 2001
Filed: Oct 7, 1999
Inventors
Alvin Kobashigawa
Christos Angeletakis
Assignee (at issue)
Kerr Corporation
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.