Granted Patent
Utility
US 6,288,251 · App. 09/555,941
Process for preparing alkyl esters of fatty acids from fats and oils
Inventors:
Keiichi Tsuto, Guo-Tang Liu
Patented Case
View Patent ↗
Granted: Sep 11, 2001
Filed: Aug 14, 2000
Inventors
Keiichi Tsuto
Guo-Tang Liu
Assignee (at issue)
Lonford Development 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.