Granted Patent
Utility
US 6,300,528 · App. 09/542,555
Method for cleaning reactors used for acid-catalyzed production of bisphenols
Inventors:
Gerrit Op Den Dries, Martin Jaco Soeters, Marcellinus Adrianus Klaverveld, Eduard Hendricus Schlarmann, Guido Theodorus Fridiswidus Maria Van Dooremal
Patented Case
View Patent ↗
Granted: Oct 9, 2001
Filed: Apr 3, 2000
Inventors
Gerrit Op Den Dries
Martin Jaco Soeters
Marcellinus Adrianus Klaverveld
Eduard Hendricus Schlarmann
Guido Theodorus Fridiswidus Maria Van Dooremal
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.