Granted Patent
Utility
US 5,646,311 · App. 08/654,483
Recovery of tocopherols
Inventors:
Tracy K. Hunt, Lutz Jeromin, Wilhelm Johannisbauer, Bernhard Gutsche, Volkmar Jordon, Herbert Wogatzki
Patented Case
View Patent ↗
Granted: Jul 8, 1997
Filed: May 28, 1996
Inventors
Tracy K. Hunt
Lutz Jeromin
Wilhelm Johannisbauer
Bernhard Gutsche
Volkmar Jordon
Herbert Wogatzki
Assignee (at issue)
Henkel Limited
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.