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.

Date of Patent:
Nov. 28, 2006

Filed:

Jan. 16, 2004
Applicants:

Ryoichi Ishikawa, Saitama, JP;

Katsuhiro Shibata, Saitama, JP;

Kimihito Hayakawa, Saitama, JP;

Inventors:

Ryoichi Ishikawa, Saitama, JP;

Katsuhiro Shibata, Saitama, JP;

Kimihito Hayakawa, Saitama, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F 3/00 (2006.01); B22F 7/14 (2006.01);
U.S. Cl.
CPC ...
Abstract

An aluminum plate () is first plastic-deformed (FIG.D) in such a way as to envelop a foaming-agent compact (), which is not foamed yet. Then, terminals of the aluminum plate () are integrally seam-welded (FIG.E) to thereby obtain a closed section structure (). Subsequently, the foaming-agent compact () contained in the closed section structure () is foamed by being heated to foaming temperature thereof. Consequently, a pipe-like frame filled with a foam () is obtained.


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