Granted Patent
Utility
US 5,861,445 · App. 08/852,900
Reinforcement of dental and other composite materials
Inventors:
Huakun Xu, Frederick C. Eichmiller
Patented Case
View Patent ↗
Granted: Jan 19, 1999
Filed: May 8, 1997
Inventors
Huakun Xu
Frederick C. Eichmiller
Assignee (at issue)
American Dental Association Health Foundation
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.