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. 09, 1980
Filed:
Feb. 23, 1979
Applicant:
Inventors:
Hideaki Shibata, Ichihara, JP;
Michihisa Osawa, Ichihara, JP;
Assignee:
Hitachi Chemical Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
521 57 ; 427222 ; 521 58 ; 521 97 ;
Abstract
Expandable particles of a styrene polymer which comprise on the surface thereof an ester of an aliphatic carboxylic acid with an aliphatic alcohol, the ester having no hydroxyl group in the molecule and being a solid at room temperature, or a mixture of said ester and a finely divided lubricant, and a process for preparing the same.