Granted Patent
Utility
US 6,433,126 · App. 09/681,755
Preparation of copolycarbonates via solid state polymerization
Inventor:
Sukhendu Bikash Hait
Patented Case
View Patent ↗
Granted: Aug 13, 2002
Filed: May 31, 2001
Inventor
Sukhendu Bikash Hait
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.