Granted Patent
Utility
US 5,391,382 · App. 08/189,431
Low dust powdered cellulose
Inventor:
Rulon A. Chappell
Patented Case
View Patent ↗
Granted: Feb 21, 1995
Filed: Jan 31, 1994
Inventor
Rulon A. Chappell
Assignee (at issue)
Qualcepts Nutrients, 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.