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. 15, 1997
Filed:
Sep. 30, 1991
Applicant:
Inventors:
Assignee:
Nissei ASB Machine Co., Ltd., Nagano-ken, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
428 3692 ; 428 357 ; 428 366 ; 215370 ;
Abstract
A resin container has a bottom structure which has a central recessed portion containing substantially no crystal, a marginal raised portion crystallized by molecular orientation, and an intermediate ring-shaped portion crystallized to have spherulite-like crystals. The bottom structure highly improves the heat-resistance at the intermediate portion, while maintaining the central recessed portion at a good impact-resistance.