Granted Patent
Utility
US 6,641,734 · App. 10/037,664
Process for purifying an organic acid
Inventors:
Michael Charles Milner Cockrem, Istvan Kovacs, Idris Mohamednur, David Heidel
Patented Case
View Patent ↗
Granted: Nov 4, 2003
Filed: Jan 3, 2002
Inventors
Michael Charles Milner Cockrem
Istvan Kovacs
Idris Mohamednur
David Heidel
Assignee (at issue)
A.E. Staley Manufacturing 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.