Granted Patent
Utility
US 5,312,992 · App. 07/780,608
Process for removing sulfur from organic sulfides
Inventors:
Roger T. Clark, Michael J. Lindstrom, Glenn T. Carroll, Jeffrey H. Yen
Patented Case
View Patent ↗
Granted: May 17, 1994
Filed: Oct 23, 1991
Inventors
Roger T. Clark
Michael J. Lindstrom
Glenn T. Carroll
Jeffrey H. Yen
Assignee (at issue)
Elf Atochem North America, Inc.
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.