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:
Oct. 25, 2011
Filed:
Mar. 09, 2010
Applicants:
Sadanobu Iwase, Tsuchiura, JP;
Mitsuo Maeda, Tsukuba, JP;
Hiroshi Harada, Tsukuba, JP;
Yusaku Kohinata, Tokyo, JP;
Inventors:
Sadanobu Iwase, Tsuchiura, JP;
Mitsuo Maeda, Tsukuba, JP;
Hiroshi Harada, Tsukuba, JP;
Yusaku Kohinata, Tokyo, JP;
Assignee:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C09K 19/38 (2006.01); C09K 19/20 (2006.01); C09K 19/54 (2006.01); G11B 7/24 (2006.01); C08J 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a liquid crystalline polyester resin composition suitable for an optical pickup unit. The composition comprises a liquid crystalline polyester, a mica and a hollow filler. Using the liquid crystalline polyester resin composition, an optical pickup unit with a high soldering resistance and a high torsional elastic modulus can be produced while suppressing breakage of the hollow filler in the composition.