Granted Patent
Utility
US 5,434,316 · App. 08/281,970
Purification of bisphenol-A
Inventor:
Gaylord M. Kissinger
Patented Case
View Patent ↗
Granted: Jul 18, 1995
Filed: Jul 28, 1994
Inventor
Gaylord M. Kissinger
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.