Granted Patent
Utility
US 6,277,946 · App. 09/567,826
Method for preparation of polycarbonates
Inventors:
Johannes Jacobus van Heijkant, Christopher Poirier, Tomoaki Shimoda, Akio Kanezawa, Carlos Godinez Seoane
Patented Case
View Patent ↗
Granted: Aug 21, 2001
Filed: May 9, 2000
Inventors
Johannes Jacobus van Heijkant
Christopher Poirier
Tomoaki Shimoda
Akio Kanezawa
Carlos Godinez Seoane
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.