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:
Aug. 09, 1988
Filed:
Nov. 05, 1986
Applicant:
Inventors:
Assignee:
Bridgestone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ; B29C / ;
U.S. Cl.
CPC ...
264 451 ; 5DIG / ; 249129 ; 249130 ; 264 453 ; 264 464 ; 264 54 ; 264254 ; 264255 ; 26433119 ; 4258 / ; 4283099 ; 4283166 ;
Abstract
A method for making a foamed article having a laminated structure comprises providing a mold having a cavity therein and a rib vertically mounted from a bottom of the cavity and having a predetermined height to establish at least two blocks on the bottom, and pouring a foamable liquid compositions into the respective blocks in amounts which permit one of the foamable liquid composition to cover the other foamable liquid composition upon foaming whereby the resulting foam has a laminated structure whose boundary between the foamed layers made of the respective foamable liquid compositions is smooth and agreeable to the touch.