Granted Patent
Utility
US 4,481,077 · App. 06/479,556
Process for preparing microfibrillated cellulose
Inventor:
Franklin Willard Herrick
Patented Case
View Patent ↗
Granted: Nov 6, 1984
Filed: Mar 28, 1983
Inventor
Franklin Willard Herrick
Assignee (at issue)
International Telephone and Telegraph 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.