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. 02, 2013
Filed:
Aug. 06, 2009
Applicants:
Richard M. Laine, Ann Arbor, MI (US);
David James Krug, Ann Arbor, MI (US);
Julien Claudius Marchal, Ann Arbor, MI (US);
Andrew Stewart Mccolm, Ann Arbor, MI (US);
Inventors:
Richard M. Laine, Ann Arbor, MI (US);
David James Krug, Ann Arbor, MI (US);
Julien Claudius Marchal, Ann Arbor, MI (US);
Andrew Stewart Mccolm, Ann Arbor, MI (US);
Assignee:
Mayaterials, Inc., Ann Arbor, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 33/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention is directed to a method for providing an agricultural waste product having amorphous silica, carbon, and impurities; extracting from the agricultural waste product an amount of the impurities; changing the ratio of carbon to silica; and reducing the silica to a high purity silicon (e.g., to photovoltaic silicon).