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.:

US 8920680 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 30, 2014

Filed:

Apr. 08, 2011
Applicant:

Zhenhua Mao, Ponca City, OK (US);

Inventor:

Zhenhua Mao, Ponca City, OK (US);

Assignee:

Pyrotek, Inc., Spokane, WA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01B 1/04 (2006.01); H01M 4/587 (2010.01); C01B 31/02 (2006.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
H01M 4/587 (2013.01); C01B 31/02 (2013.01); H01M 10/0525 (2013.01);
Abstract

Methods and apparatus relate to methods of making carbonaceous material or coating from a precursor. Oxidation of hydrocarbons forming the precursor occurs upon adding an oxidation agent to a mixture of the precursor and a solvent for the precursor. The oxidation of the hydrocarbons yields constituents that are insoluble in the solvent and may not melt. The constituents that are insoluble in the solvent may further coat solid particles, if the solid particles are provided in the mixture. Carbonization of solids recovered by separation from liquids in the mixture increases carbon weight percent of the constituents that are insoluble in the solvent. The methods result in products that provide the carbonaceous material or coating and are suitable for use in electrodes.


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