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:
Jun. 28, 1994
Filed:
Dec. 03, 1992
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
Disclosed is a positive type photoresist composition comprising an alkali-soluble resin, a quinone diazide compound and a compound represented by the following general formula (I): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 which may be the same or different and in which four groups for each group may be different from each other at the same time, each represents a hydrogen atom, a hydroxyl group, a halogen atom, an alkyl group, an alkoxy group, a nitro group, an alkenyl group, an aryl group, an aralkyl group, an alkoxycarbonyl group, an arylcarbonyl group, an acyloxy group, an acyl group, an aryloxy group or an aralkoxy group; a, b, d and e each represents 0 or an integer 1 to 3; and c represents 0 or 1, with the proviso that a, b, c, d and e satisfy the relationship (a+b+c+d+e.gtoreq.2), at least one of a and d is 1 or more and at least one of b and e is 1 or more.