Granted Patent
Utility
US 6,255,442 · App. 09/500,340
Esterification process
Inventors:
Joseph V. Kurian, Yuanfeng Liang, Donald Edward Putzig
Patented Case
View Patent ↗
Granted: Jul 3, 2001
Filed: Feb 8, 2000
Inventors
Joseph V. Kurian
Yuanfeng Liang
Donald Edward Putzig
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND 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.