Granted Patent
Utility
US 5,331,085 · App. 08/069,043
Method for increasing viscosity uniformity in polycarbonate manufacture
Inventors:
Randy Northrop, Kent Wenderoth
Patented Case
View Patent ↗
Granted: Jul 19, 1994
Filed: May 28, 1993
Inventors
Randy Northrop
Kent Wenderoth
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.