IP Library › Granted Patent US 4,597,831
Granted Patent Utility
US 4,597,831 · App. 06/745,369

Use of foam in surface treatment of paper

Inventor: Thomas E. Anderson
Patented Case View Patent ↗
Granted: Jul 1, 1986 Filed: Jun 17, 1985
Inventor
Thomas E. Anderson

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.

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Quick Facts
Patent No.
US 4,597,831
App. No.
06/745,369
Filed
1985-06-17
Granted
1986-07-01
Kind
A