Granted Patent
Utility
US 5,352,747 · App. 08/163,220
Light-diffusing polycarbonate resin compositions containing polymethyl silsesquioxane
Inventors:
Yoshio Ohtsuka, Tomohide Fujiguchi, Katsumi Oishi
Patented Case
View Patent ↗
Granted: Oct 4, 1994
Filed: Dec 7, 1993
Inventors
Yoshio Ohtsuka
Tomohide Fujiguchi
Katsumi Oishi
Assignee (at issue)
GE Plastics Japan Ltd.
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.