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:
Feb. 02, 1993
Filed:
Nov. 30, 1990
Applicant:
Inventors:
Yoshitaka Tsutsumi, Kudamatsu, JP;
Teruhisa Uemura, Shinnanyo, JP;
Masazumi Hasegawa, Shinnanyo, JP;
Assignee:
Tosoh Corporation, Shinnanyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03F / ; G03C / ;
U.S. Cl.
CPC ...
430169 ; 430165 ; 430191 ; 430192 ; 430193 ;
Abstract
A positive photosensitive composition for forming lenses, which comprises a polymer, a photosensitive agent, a thermosetting agent and a solvent, wherein said polymer is an alkali-soluble resin, said photosensitive agent is a 1,2-naphthoquinone diazide sulfonate, and said thermosetting agent is a thermosetting agent capable of imparting heat resistance and solvent resistance at the time of forming lenses by heat treatment.
Tsutsumi, Yoshitaka. (1993). Positive photosensitive composition for forming lenses containing (U.S. Patent No. 5183722). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5183722
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