Granted Patent
Utility
US 5,907,027 · App. 09/082,106
Reducing ionic impurities content in aromatic polycarbonate resins
Inventors:
Gary E. Spilman, Eric T. Gohr, David A. Bradley
Patented Case
View Patent ↗
Granted: May 25, 1999
Filed: May 20, 1998
Inventors
Gary E. Spilman
Eric T. Gohr
David A. Bradley
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.