Granted Patent
Utility
US 5,856,589 · App. 08/909,010
Method to defoul bisphenol-phenol adduct fouled crystallizer coolers
Inventor:
Michael J. Cipullo
Patented Case
View Patent ↗
Granted: Jan 5, 1999
Filed: Aug 8, 1997
Inventor
Michael J. Cipullo
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.