Granted Patent
Utility
US 4,457,818 · App. 06/100,039
Dental compositions from urethane acrylate, diacrylate monomer, camphorquinone and dimethylaminoethyl methacrylate
Inventors:
Robert Denyer, Michael S. Fortuin
Patented Case
View Patent ↗
Granted: Jul 3, 1984
Filed: Dec 4, 1979
Inventors
Robert Denyer
Michael S. Fortuin
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.