The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 07, 1993
Filed:
May. 30, 1991
Tadamori Sakakibara, Iruma, JP;
Yutaka Hasegawa, Kawagoe, JP;
Fumio Oohashi, Higashi-Matsuyama, JP;
Kiyomi Adachi, Kami-Fukuoka, JP;
Tonen Corporation, Tokyo, JP;
Abstract
A gasoline additive composition comprising an ester; and at least one dispersant component chosen from the group consisting of a specified monosuccinimide, a specified bissuccinimide, an alkylamine of average molecular weight 500-5000 having a polyolefine polymer as an alkyl group and a specified benzylamine derivative of average molecular weight 500-5000. It can contain a polyoxyalkylene glycol or its derivative. It can further contain a lubricant oil fraction of viscosity in the range 3-35 mm.sup.2 /s (100.degree. C.) It prevents undesired deposits on the surfaces of intake valves of an automobile engine.