Granted Patent
Utility
US 6,797,050 · App. 10/200,813
Use of fermentation residues as flow-enhancing agents in cementitious materials
Inventors:
Andrew J. Hoffman, Michael D. Harrison
Patented Case
View Patent ↗
Granted: Sep 28, 2004
Filed: Jul 22, 2002
Inventors
Andrew J. Hoffman
Michael D. Harrison
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.