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. 11, 1989
Filed:
Dec. 31, 1987
Applicant:
Inventors:
Steven E Spence, McPherson, KS (US);
Robert F Shamet, McPherson, KS (US);
Flavio Da Silva, McPherson, KS (US);
Horst Eigruber, McPherson, KS (US);
Assignee:
American Maplan Corporation, McPherson, KS (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
4251331 ; 264 459 ; 264171 ; 425380 ; 425462 ;
Abstract
A triple-wall foam coextrusion apparatus in which inner and outer layers of one synthetic resin material are coextruded with an intermediate layer of another synthetic resin material, and wherein the passages for the first material are inclined to the axis along which the second material is extruded around a spider to ensure uniform flow.
Spence, Steven. (1989). Triple-wall foam coextrusion apparatus (U.S. Patent No. 4846648). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4846648
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile