Granted Patent
Utility
US 4,740,650 · App. 06/874,994
Xylene isomerization
Inventors:
Regis J. Pellet, Gary N. Long, Jule A. Rabo, Peter K. Coughlin
Patented Case
View Patent ↗
Granted: Apr 26, 1988
Filed: Jun 16, 1986
Inventors
Regis J. Pellet
Gary N. Long
Jule A. Rabo
Peter K. Coughlin
Assignee (at issue)
Union Carbide Corporation
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.