Granted Patent
Utility
US 6,509,180 · App. 09/720,930
Process for producing ethanol
Inventors:
Dan W. Verser, Tim Eggeman
Patented Case
View Patent ↗
Granted: Jan 21, 2003
Filed: Dec 29, 2000
Inventors
Dan W. Verser
Tim Eggeman
Assignee (at issue)
Zeachem, Inc.
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.