Granted Patent
Utility
US 4,557,800 · App. 06/674,346
Process of forming a porous cellulosic paper from a thermal treated cellulosic non-bonding pulp
Inventor:
Homan B. Kinsley, Jr.
Patented Case
View Patent ↗
Granted: Dec 10, 1985
Filed: Nov 20, 1984
Inventor
Homan B. Kinsley, Jr.
Assignee (at issue)
James River 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.