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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.:

US 5858584 B1

PDFFull Text
Date of Patent:
Jan. 12, 1999

Filed:

May. 16, 1997

Positive photosensitive resin composition and electronic apparatus using

Applicant:
Inventors:

Yoshiaki Okabe, Hitachi, JP;

Takao Miwa, Hitachinaka, JP;

Yasunari Maekawa, Hitachi, JP;

Takumi Ueno, Mito, JP;

Geraldine Rames-Langlade, Hitachi, JP;

Mina Ishida, Hitachi, JP;

Assignees:

Hitachi, Ltd., Tokyo, JP;

Hitachi Chemical Co., Ltd., Tokyo, JP;

Attorney:

Antonelli, Terry, Stout & Kraus, LLP

Primary Examiner:

John S Chu

Int. Cl.
CPC ...
G03F / ;
U.S. Cl.
CPC ...
430 18 ; 430192 ; 430193 ; 430326 ; 430330 ;
Abstract

A highly reliable positive type photosensitive resin composition composed of diamine having a carboxyl group as a structural unit, which can be developed with an alkaline aqueous solution, comprising polyamic acid ester having hydrophobic group, o-quinonediazidesulfonyl amide compound, and/or o-quinonediazidesulfonyl amide sulfonic ester compound, and electronic devices using the same. A polyamide film having preferable positive type relief patterns, of which the unexposed portion is not corroded, can be obtained.

Find Patent Forward Citations

Okabe, Yoshiaki. (1999). Positive photosensitive resin composition and electronic apparatus using (U.S. Patent No. 5858584). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5858584

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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