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. 16, 1997
Filed:
Feb. 16, 1996
Applicant:
Inventors:
Dae-Youp Lee, Seoul, KR;
Ki-Dae Kim, Daejon-si, KR;
Ji Hong Kim, Daejon-si, KR;
Seong-ju Kim, Daejeon-si, KR;
Assignee:
Korea Kumho Petrochemical Co., Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03F / ;
U.S. Cl.
CPC ...
430191 ; 430192 ; 430193 ;
Abstract
A positive photoresist composition, including an alkali soluble novolak resin, an esterification compound represented by the following formula II as a photosensitive agent and a solvent: ##STR1## wherein R.sub.1 through R.sub.3 are independently selected from a hydrogen atom, an alkoxy group and an alkyl group containing 1 to 4 carbon atoms and are different from or the same as one another, and