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:
Jan. 11, 1994
Filed:
Apr. 05, 1993
Alfred T Jeffries, III, Providence, RI (US);
Medhat A Toukhy, Barrington, RI (US);
OCG Microelectronic Materials, Inc., West Paterson, NJ (US);
Abstract
A radiation sensitive mixture comprising an alkali-soluble binder resin and at least one photoactive compound comprising a compound of formula (I): ##STR1## wherein each R is individually selected from hydrogen and a lower alkyl group having 1 to 4 carbon atoms; n is either 0, 1, or 2; and D is selected from the group consisting of hydrogen or o-naphthoquinone diazide sulfonyl group; with the proviso that at least two D's are o-naphthoquinone diazide sulfonyl groups, and wherein the amount of said binder resin is about 70 to 95% by weight and the amount of photoactive compound being from about 5 to about 30% be weight, based on the total solids content of said content of said raditional-sensitive mixture.