Granted Patent
Utility
US 4,595,598 · App. 06/602,874
Crystalline alumina composites
Inventors:
Robert De Luca, Robin M. Forbes-Jones
Patented Case
View Patent ↗
Granted: Jun 17, 1986
Filed: Apr 23, 1984
Inventors
Robert De Luca
Robin M. Forbes-Jones
Assignee (at issue)
Johnson & Johnson Dental Products Company
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.