Granted Patent
Utility
US 4,411,776 · App. 06/418,953
Method for treating mercaptans contained in a sour petroleum distillate
Inventor:
David H. J. Carlson
Patented Case
View Patent ↗
Granted: Oct 25, 1983
Filed: Sep 16, 1982
Inventor
David H. J. Carlson
Assignee (at issue)
UOP LLC
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.