Granted Patent
Utility
US 5,414,151 · App. 08/236,816
Method for making bisphenol
Inventors:
Eric James Pressman, Sheldon J. Shafer
Patented Case
View Patent ↗
Granted: May 9, 1995
Filed: May 2, 1994
Inventors
Eric James Pressman
Sheldon J. Shafer
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.