Granted Patent
Utility
US 4,801,392 · App. 07/069,354
Magnetic recording compositions containing ionic dye compounds as initiators
Inventors:
Paul C. Adair, Todd M. Hess
Patented Case
View Patent ↗
Granted: Jan 31, 1989
Filed: Jul 2, 1987
Inventors
Paul C. Adair
Todd M. Hess
Assignee (at issue)
The Mead Corporation
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.