Granted Patent
Utility
US 6,168,435 · App. 09/304,389
Ceramic dental abutments with a metallic core
Inventors:
Keith D. Beaty, Gale R. Brown, Richard J. Lazzara, Stephan S. Porter
Patented Case
View Patent ↗
Granted: Jan 2, 2001
Filed: May 4, 1999
Inventors
Keith D. Beaty
Gale R. Brown
Richard J. Lazzara
Stephan S. Porter
Assignee (at issue)
Implant Innovations, Inc.
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.