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:
Aug. 02, 2016
Filed:
Sep. 26, 2012
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Emi Oishi, Kawasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K 9/04 (2006.01); C08K 3/36 (2006.01); C08K 9/02 (2006.01); G02B 1/04 (2006.01); C08L 25/14 (2006.01); C08L 25/10 (2006.01); C08L 25/12 (2006.01);
U.S. Cl.
CPC ...
C08K 9/04 (2013.01); C08K 3/36 (2013.01); C08K 9/02 (2013.01); G02B 1/04 (2013.01); C08L 25/10 (2013.01); C08L 25/12 (2013.01); C08L 25/14 (2013.01);
Abstract
A styrene based resin composition having a low linear thermal expansion coefficient and high formability, a formed article thereof, and an optical element made from the formed article are provided. The formed article is produced by forming a styrene based resin composition containing a styrene based resin and silica particles, wherein the number average particle diameter of primary particles of the silica particles is 0.5 nm or more and 40 nm or less, and the content of the silica particles is 40 percent by volume or more and 75 percent by volume or less relative to a total of the styrene based resin and the silica particles.