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:
Nov. 18, 2025
Filed:
Feb. 26, 2021
Ostuka Chemical Co., Ltd., Osaka, JP;
Shinya Shinozaki, Tokushima, JP;
Mifuyu Ueno, Tokushima, JP;
OTSUKA CHEMICAL CO., LTD., Osaka, JP;
Abstract
A rubber composition comprising at least one member selected from the group consisting of compounds represented by the following formulas (1) to (7) and 3-methyl-5-pyrazolone, and a rubber component: wherein the R group is a hydrazide group, an N'-alkylidene hydrazide group, an N-allyl carbamoyl group, a 3-carboxyl acryloyl group, a hydrazine carboxyamino group, a thiocarboxyl group, a thiol group, or a hydrogen atom; Ris a sulfur atom or an oxygen atom; Ris a thiol group or a hydroxy group; Ris a Calkylene group; Ris an alkyl group, an aralkyl group, an aryl group, or a heterocyclic group; Ris a hydrogen atom or an amino group; Ris a heteroatom; and Ris a heterocyclic group.