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:
Mar. 31, 2026
Filed:
Feb. 20, 2023
Eneos Corporation, Tokyo, JP;
Yuya Mizutani, Tokyo, JP;
Hidetoshi Ogata, Tokyo, JP;
Tomohiro Takaki, Tokyo, JP;
Takeshi Okido, Tokyo, JP;
ENEOS CORPORATION, Tokyo, JP;
Abstract
An additive for a lubricating oil containing a phosphorus compound P represented by the following formula (1): wherein Rand Reach independently represent an alkyl group having 1 to 3 carbon atoms, and n represents an integer of 0 to 3, wherein the phosphorus compound P contains a phosphorus compound P0 wherein n is 0, a phosphorus compound P1 wherein n is 1, a phosphorus compound P2 where n is 2, and a phosphorus compound P3 wherein n is 3, and a total proportion of the phosphorus compound P0 and the phosphorus 10 compound P1 in the phosphorus compound P is 60% by mole or more.