Granted Patent
Utility
US 5,220,093 · App. 07/863,176
Process for production of olefins from mixtures of light paraffins
Inventors:
Robert J. Gartside, Axel Johnson
Patented Case
View Patent ↗
Granted: Jun 15, 1993
Filed: Apr 3, 1992
Inventors
Robert J. Gartside
Axel Johnson
Assignee (at issue)
Stone & Webster Engineering Corp.
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.