Granted Patent
Utility
US 5,959,168 · App. 08/945,595
Zeolite-based ethylabenzene process adaptable to an aluminum chloride-based ethylbenzene plant
Inventors:
Matheus J. M. van der Aalst, Mohammed S. U. Samson, Garmt R. Meima, Michael Q. de Steenwinkel
Patented Case
View Patent ↗
Granted: Sep 28, 1999
Filed: Feb 17, 1998
Inventors
Matheus J. M. van der Aalst
Mohammed S. U. Samson
Garmt R. Meima
Michael Q. de Steenwinkel
Assignee (at issue)
THE DOW CHEMICAL 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.