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:
Jul. 20, 2010

Filed:

Apr. 17, 2007
Applicant:

Wei Wu, Ann Arbor, MI (US);

Inventor:

Wei Wu, Ann Arbor, MI (US);

Assignee:

Chemnano, Inc., Ann Arbor, MI (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F 9/22 (2006.01);
U.S. Cl.
CPC ...
Abstract

A process for synthesizing metal submicron and nano-scale powders for use in articles of manufacture. In a suitable reactor, single metal or multiple metal complexes are heated to a temperature whereby, upon contact with hydrogen gas, an exothermic reaction begins. The further temperature rise in response to the exothermic reaction is minimized by reducing the external heat input, thereby minimizing the agglomeration or sintering of the metal nano-scale particles resulting from the process. Preferably, after drawing a vacuum on the metal complexes in the reactor, the hydrogen is introduced at above, equal to or below ambient pressure and the reaction is purposely made slow to prevent agglomeration or sintering.


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