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:
Jul. 14, 2026
Filed:
Dec. 04, 2023
Applicant:
Tokyo Ohka Kogyo Co., Ltd., Kanagawa, JP;
Inventor:
Kazuhiro Takahashi, Kanagawa, JP;
Assignee:
TOKYO OHKA KOGYO CO., LTD., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23F 1/30 (2006.01); H10P 50/66 (2026.01);
U.S. Cl.
CPC ...
C23F 1/30 (2013.01); H10P 50/667 (2026.01);
Abstract
A chemical solution for removing a precious metal includes a cerium-containing oxidizing agent (A), an acid component (B) selected from the group consisting of carbonic acid, formic acid, propionic acid, butyric acid, and sulfonic acid, and salts thereof, and water.
Takahashi, Kazuhiro. (2026). Chemical solution for removing precious metal, method for manufacturing chemical solution, method for treating substrate, method for manufacturing semiconductor device (U.S. Patent No. 12680172). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12680172
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile