Prutton v. Marzall, Commissioner of Patents

WASHINGTON, Circuit Judge.

This is a suit under R.S. 4915, 35 U.S.'C. A. § 63, in which a patent is sought for a lubricating composition. 1 From a judgment of the United States District Court for the District of Columbia dismissing the complaint, plaintiffs (appellants) take this appeal.

Appellants’ basic claim is stated as follows:

“Claim 8: A lubricating composition comprising a major amount of a hydrocarbon lubricating oil and the combination of (a) a detergent and (b) a sulphur-containing inhibitor in such an amount and with the sulphur in such form that more than 0.01% of sulphur, based on…