Lauman v. Urschel White Lime Co.

This is a bill by A. H. Rauman against the Urschel White Eime Company, charging the infringement of patent No. 678,500, granted July 10, 1901, for a method or process of treating lime. The bill was filed November 28, 1902. The court, without an opinion, sustained the defenses and dismissed the bill on the ground that the patent was void and was not infringed.

As described in the patent, Eauman’s invention was a process of “dry-slaking the burnt lime by adding thereto just that quantity of water sufficient to convert the lime into a hydrate of lime, and then by agitating or mixing the materials…