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. 23, 1997
Filed:
Mar. 10, 1995
Yasuhito Naruse, Shizuoka, JP;
Kiyoshi Kamitani, Shizuoka, JP;
Akio Uesugi, Shizuoka, JP;
Tsutomu Kakei, Shizuoka, JP;
Gouichi Morohoshi, Tokyo, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
Disclosed are a positive type lead-frame forming material which contains a light-sensitive material comprising an o-quinonediazide compound and a novolak resin, and a positive type lead-frame forming material which contains a positive resist composition comprising (1) a water-insoluble but alkaline water-soluble resin, (2) a compound capable of generating an acid by irradiation with active rays or radiant rays, and (3) a compound containing a group decomposable by acid which can increase its solubility in an alkaline developer through the action of the acid.