Minnesota Mining and Manufacturing Co. v. Norton Co.

MEMORANDUM OPINION

GREEN, District Judge.

This is an action alleging infringement of United States Letters Patent No. 2,-958,593, hereinafter referred to as the Hoover patent. Claims one through eight, of a total of thirteen claims, are in issue herein. Plaintiff is the assignee of the inventors, Howard L. Hoover, Eugene J. Dupre and Walter J. Rankin, each of whom was in plaintiff’s employ at the time the patented product was developed.

The patent in suit covers an abrasive pad described in the specifications thereof as follows:

The present invention relates to non-woven fibrous abrasive articles…