Granted Patent
Utility
US 6,429,320 · App. 09/922,208
Processes for the purification of tocopherol and/or sterol compounds and compositions containing orthoborate ester mixtures
Inventors:
Patrick M. McCurry, Jr., Stephen Turner, Carl E. Pickens
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Aug 3, 2001
Inventors
Patrick M. McCurry, Jr.
Stephen Turner
Carl E. Pickens
Assignee (at issue)
Cognis 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.