Granted Patent
Utility
US 5,830,974 · App. 08/799,886
Method for preparing aromatic polyether polymers
Inventors:
John Schmidhauser, Daniel J. Brunelle
Patented Case
View Patent ↗
Granted: Nov 3, 1998
Filed: Feb 13, 1997
Inventors
John Schmidhauser
Daniel J. Brunelle
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.