Granted Patent
Utility
US 5,430,199 · App. 08/218,397
Method for recovering phenol and xanthene values from bisphenol A tars
Inventors:
Andrew J. Caruso, Julia Lam Lee
Patented Case
View Patent ↗
Granted: Jul 4, 1995
Filed: Mar 28, 1994
Inventors
Andrew J. Caruso
Julia Lam Lee
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.