Granted Patent
Utility
US 4,954,428 · App. 07/401,717
Coating for increasing sensitivity of a radiation imageable polyacetylenic film
Inventors:
David F. Lewis, Robert D. Schenfele
Patented Case
View Patent ↗
Granted: Sep 4, 1990
Filed: Sep 1, 1989
Inventors
David F. Lewis
Robert D. Schenfele
Assignee (at issue)
GAF Chemicals 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.