Granted Patent
Utility
US 5,238,775 · App. 07/656,857
Radiation-sensitive resin composition
Inventors:
Toru Kajita, Takao Miura, Yoshiji Yumoto, Chozo Okuda
Patented Case
View Patent ↗
Granted: Aug 24, 1993
Filed: Feb 19, 1991
Inventors
Toru Kajita
Takao Miura
Yoshiji Yumoto
Chozo Okuda
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.