Granted Patent
Utility
US 5,019,478 · App. 07/429,298
Selected trihydroxybenzophenone compounds and their use in photoactive compounds and radiation sensitive mixtures
Inventors:
Medhat A. Toukhy, Alfred T. Jeffries, III.
Patented Case
View Patent ↗
Granted: May 28, 1991
Filed: Oct 30, 1989
Inventors
Medhat A. Toukhy
Alfred T. Jeffries, III.
Assignee (at issue)
Olin Hunt Specialty Products, Inc.
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.