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:
Dec. 29, 1998
Filed:
Jan. 14, 1997
Applicant:
Inventors:
Kuninori Hirosawa, Utsunomiya, JP;
Yoshihisa Ishihara, Tochigi-ken, JP;
Takeshi Aoki, Imaichi, JP;
Yasushi Terui, Utsunomiya, JP;
Yoshinori Shimojo, Kashiwa, JP;
Hiroyuki Gokuraku, Utsunomiya, JP;
Naochika Kogure, Utsunomiya, JP;
Assignee:
JSP Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; C08J / ;
U.S. Cl.
CPC ...
521 79 ; 521 97 ; 521138 ; 521182 ; 521 81 ;
Abstract
A polycarbonate resin-containing composition is extruded through a die together with a blowing agent to produce a foamed body. The composition has a storage modulus G'.sub.A dyn/cm.sup.2 at a temperature of 250.degree. C. and an angular frequency of 0.1 rad/sec and a storage modulus G'.sub.B dyn/cm.sup.2 at a temperature of 250.degree. C. and an angular frequency of 10 rad/sec, wherein the storage modulus G'.sub.A and storage modulus G'.sub.B satisfy the following conditions: