Corona Chemical Co. v. Latimer Chemical Co.

LEWIS, District Judge.

This is a demurrer to a bill charging infringement of rights claimed to be secured to plaintiff as assignee of Clare H. Hall to whom letters patent were issued covering Improvement in Acid Arsenate of Lead. The letters are attached to the bill, and I take it that, for present purposes, it is not necessary to closely determine what is claimed in and defined by them; i. e., whether, under the statute, it is an art, article of manufacture or composition of matter. The specifications set out a chemical process by which, in part only, the discovery was made. It is said in…