Granted Patent
Utility
US 6,403,676 · App. 09/461,576
Dental composites comprising ground, densified, embrittled glass fiber filler
Inventors:
Weitao Jia, Martin L. Schulman, Arun Prasad, Bruce Alpert
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Dec 15, 1999
Inventors
Weitao Jia
Martin L. Schulman
Arun Prasad
Bruce Alpert
Assignee (at issue)
Jeneric/Pentron Incorporated
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.