Granted Patent
Utility
US 4,612,270 · App. 06/711,720
Two-layer negative resist
Inventors:
Thomas R. Pampalone, Paula M. Holder
Patented Case
View Patent ↗
Granted: Sep 16, 1986
Filed: Mar 14, 1985
Inventors
Thomas R. Pampalone
Paula M. Holder
Assignee (at issue)
RCA 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.