Granted Patent
Utility
US 4,459,193 · App. 06/354,795
Dental compositions containing camphorquinone and organic peroxide as catalyst
Inventors:
Maurice J. Ratcliffe, Derek Shaw
Patented Case
View Patent ↗
Granted: Jul 10, 1984
Filed: Mar 4, 1982
Inventors
Maurice J. Ratcliffe
Derek Shaw
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.