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:
Nov. 18, 2003
Filed:
Sep. 16, 2002
Yasuhiro Doi, Tokyo, JP;
Dai Nippon Printing Co., Ltd., Tokyo-To, JP;
Abstract
A resin composition for production of an optical element being adapted to form the optical element has a characteristics of which, when W (° C.) represents, regarding a crest portion in a loss factor/temperature curve obtained by measuring the loss factor of the resin composition relative to a change in the temperature, the width of the crest portion at the position of ½ of the maximum value of the loss factor in the crest portion temperature range; W (° C.) represents, regarding the crest portion, the width of the crest portion at the position of 0.1 of the maximum value of the loss factor; and &Dgr;W (° C.), the difference between the widths of the two crest portions, is set to be &Dgr;W=W −W , the &Dgr;W is in the range of from 16° C. to 31° C.