Granted Patent
Utility
US 6,489,496 · App. 09/891,573
Transesterification process
Inventors:
Jeffrey A. Barnhorst, Michael D. Staley, Dean A. Oester
Patented Case
View Patent ↗
Granted: Dec 3, 2002
Filed: Jun 26, 2001
Inventors
Jeffrey A. Barnhorst
Michael D. Staley
Dean A. Oester
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.