Granted Patent
Utility
US 6,048,931 · App. 09/068,119
Polycarbonate resin composition
Inventors:
Katsutoyo Fujita, Yoshitaka Ono
Patented Case
View Patent ↗
Granted: Apr 11, 2000
Filed: May 6, 1998
Inventors
Katsutoyo Fujita
Yoshitaka Ono
Assignee (at issue)
KANEKA 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.