Granted Patent
Utility
US 6,576,802 · App. 10/158,452
One-step production of 1, 3-propanediol from ethylene oxide and syngas with a catalyst with a phospholanoalkane ligand
Inventors:
John F. Knifton, Talmadge Gail James, Kevin Allen, Paul Richard Weider, Joseph Broun Powell, Lynn H. Slaugh
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: May 30, 2002
Inventors
John F. Knifton
Talmadge Gail James
Kevin Allen
Paul Richard Weider
Joseph Broun Powell
Lynn H. Slaugh
Assignee (at issue)
SHELL OIL 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.