Granted Patent
Utility
US 5,672,664 · App. 08/680,733
Color improved polycarbonate compositions and molded articles
Inventors:
James L. DeRudder, Richard W. Howery
Patented Case
View Patent ↗
Granted: Sep 30, 1997
Filed: Jul 15, 1996
Inventors
James L. DeRudder
Richard W. Howery
Assignee (at issue)
General Electric Company
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.