Granted Patent
Utility
US 5,362,597 · App. 07/888,635
Radiation-sensitive resin composition comprising an epoxy-containing alkali-soluble resin and a naphthoquinone diazide sulfonic acid ester
Inventors:
Kimiyasu Sano, Osahiko Tomomitsu, Masayuki Endoh, Yasuaki Yokoyama
Patented Case
View Patent ↗
Granted: Nov 8, 1994
Filed: May 27, 1992
Inventors
Kimiyasu Sano
Osahiko Tomomitsu
Masayuki Endoh
Yasuaki Yokoyama
Assignee (at issue)
Japan Synthetic Rubber 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.