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:
Jan. 20, 2026
Filed:
May. 06, 2021
Tanaka Kikinzoku Kogyo K.k., Tokyo, JP;
Kazutaka Takeda, Tsukuba, JP;
Syunsuke Kato, Tsukuba, JP;
Shunji Kikuhara, Tsukuba, JP;
Kanako Kurahashi, Tokyo, JP;
Tatsushi Minami, Tokyo, JP;
Masahiro Shiraki, Tokyo, JP;
TANAKA KIKINZOKU KOGYO K.K., Tokyo, JP;
Abstract
The present invention relates to a methane combustion catalyst including platinum and iridium supported on a tin oxide carrier for combusting methane in a combustion exhaust gas containing sulfur oxide. In the methane combustion catalyst, a ratio Rof platinum oxides to metal platinum is 8.00 or more, wherein the ratio Ris based on existence percentages of the metal platinum (Pt) and the platinum oxides (PtO and PtO) obtained from a platinum 4f spectrum analyzed and measured by X-ray photoelectron spectroscopy (XPS) and calculated in accordance with the following expression. In the following expression, Ris an existence percentage of the metal platinum (Pt), Ris an existence percentage of PtO, and Ris an existence percentage of PtO.=()/ [Expression 1]
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile