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:
Apr. 03, 1990
Filed:
Apr. 04, 1988
Applicant:
Inventors:
Tiharu Kato, Yokohama, JP;
Kazuyuki Saito, Kawasaki, JP;
Norio Ishikawa, Souka, JP;
Kiyoto Mori, Kasukabe, JP;
Assignees:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Kanto Chemical Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
430331 ; 430326 ; 252156 ; 252528 ; 252529 ; 252547 ; 252548 ; 252559 ;
Abstract
A positive resist developer comprising a solution containing a quaternary ammonium hydroxide, a cationic surfactant and a nonionic surfactant.
Kato, Tiharu. (1990). Positive resist quaternary ammonium hydroxide containing developer with (U.S. Patent No. 4914006). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4914006
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile