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. 24, 1990
Filed:
Jun. 07, 1989
Applicant:
Inventor:
Shigeru Nedzu, Shizuoka, JP;
Assignee:
Polyplastics Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428 365 ; 428213 ; 4283135 ; 4283144 ; 4283193 ;
Abstract
A heat-resistant composite sheet includes, as the main constituents, either a foamed polystyrene sheet and a polybutylene terephthalate resin film, or a foamed polystyrene sheet, a polystyrene resin film and a polybutylene terephthalate resin film, wherein the polybutylene terephthalate resin film layer is laminated to form one, and preferably both of the outer layers.
Nedzu, Shigeru. (1990). Heat-resistant composite sheet and container formed of the same (U.S. Patent No. 4943459). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4943459
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile