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. 30, 2025
Filed:
Dec. 07, 2022
Applicant:
Tokyo Ohka Kogyo Co., Ltd., Kawasaki, JP;
Inventors:
Mai Sugawara, Kawasaki, JP;
Tomoya Kumagai, Kawasaki, JP;
Assignee:
TOKYO OHKA KOGYO CO., LTD., Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23G 1/02 (2006.01); B08B 3/04 (2006.01); B08B 3/08 (2006.01); C11D 7/08 (2006.01); C11D 7/50 (2006.01);
U.S. Cl.
CPC ...
C23G 1/02 (2013.01);
Abstract
A metal resist remover containing a solvent and a strong acid that is liquid at 20° C., in which a pH value, which is measured with a pH meter, of a liquid formed by subjecting the cleaning liquid to a 10-fold dilution with pure water is 2.5 or less.