Granted Patent
Utility
US 5,606,007 · App. 08/067,245
Processes for preparing aromatic polycarbonates
Inventors:
Takeshi Sakashita, Tomoaki Shimoda, Hideyuki Itoi, Takashi Nagai, Kotarou Kishimura
Patented Case
View Patent ↗
Granted: Feb 25, 1997
Filed: May 21, 1993
Inventors
Takeshi Sakashita
Tomoaki Shimoda
Hideyuki Itoi
Takashi Nagai
Kotarou Kishimura
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.