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:
Mar. 25, 2008

Filed:

Oct. 01, 2003
Applicants:

Kay Leong Lim, Singapore, SG;

Lye-king Tan, Singapore, SG;

Eng-seng Tan, Singapore, SG;

Robin Baumgartner, Singapore, SG;

Inventors:

Kay Leong Lim, Singapore, SG;

Lye-King Tan, Singapore, SG;

Eng-Seng Tan, Singapore, SG;

Robin Baumgartner, Singapore, SG;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B22F 7/06 (2006.01);
U.S. Cl.
CPC ...
Abstract

The invention shows how powder injection molding may be used to form a continuous body having multiple parts, each of which has different functional properties such as corrosion resistance or hardness, there being no connective materials such as solder or glue between the parts. This is accomplished through careful control of the relative shrinkage rates of these various parts. Although there is no limit to how many parts with different functional properties can make up an object, special attention is paid to certain pairs of functional properties that are difficult and/or expensive to combine in a single object when other manufacturing means are used.


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