Granted Patent
Utility
US 5,684,103 · App. 08/829,146
Color stable dental restorative materials
Inventors:
Weitao Jia, Arun Prasad
Patented Case
View Patent ↗
Granted: Nov 4, 1997
Filed: Mar 31, 1997
Inventors
Weitao Jia
Arun Prasad
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.