Granted Patent
Utility
US 6,588,345 · App. 10/125,658
System for improving the flowability of hygroscopic materials from a hopper
Inventors:
Edgar L. Aguirre, Donald H. Griffin, Jr., William A. Raiola, Derek Duplooy
Patented Case
View Patent ↗
Granted: Jul 8, 2003
Filed: Apr 18, 2002
Inventors
Edgar L. Aguirre
Donald H. Griffin, Jr.
William A. Raiola
Derek Duplooy
Assignee (at issue)
United States Sugar Corporation
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.