Granted Patent
Utility
US 4,713,312 · App. 06/939,270
Imaging system employing photosensitive microcapsules containing 3-substituted coumarins and other photobleachable sensitizers
Inventors:
Paul C. Adair, Gary F. Hillenbrand, Paul D. Davis
Patented Case
View Patent ↗
Granted: Dec 15, 1987
Filed: Dec 10, 1986
Inventors
Paul C. Adair
Gary F. Hillenbrand
Paul D. Davis
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.