Granted Patent
Utility
US 5,556,734 · App. 08/363,269
Radiation sensitive resin composition comprising copolymer of isopropenylphenol and T-butyl(meth)acrylate
Inventors:
Mikio Yamachika, Eiichi Kobayashi, Toshiyuki Ota, Akira Tsuji
Patented Case
View Patent ↗
Granted: Sep 17, 1996
Filed: Dec 23, 1994
Inventors
Mikio Yamachika
Eiichi Kobayashi
Toshiyuki Ota
Akira Tsuji
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.