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:
Jul. 09, 1985
Filed:
May. 10, 1983
Applicant:
Inventors:
Assignee:
Sekisui Kaseihin Kogyo Kabushiki Kaisha, Nara, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; B32B / ;
U.S. Cl.
CPC ...
428 35 ; 428215 ; 428220 ; 4283186 ; 4283199 ; 428339 ; 428910 ; 521139 ;
Abstract
A polystyrene foamed sheet suitable for thermoforming and containers such as cups or trays formed therefrom, the foamed sheet comprising a polystyrene resin as the base resin which contains a specific quantity of each a rubber component and a filler, having specific bulk density, thickness, stretch ratio and residual gas quantity, and said sheet being preferably laminated with a film.