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:
Aug. 16, 2011
Filed:
Oct. 17, 2007
Applicants:
Katsuyoshi Kondoh, Minoh, JP;
Yoshisada Michiura, Izumisano, JP;
Junko Umeda, Toyonaka, JP;
Inventors:
Assignees:
Kurimoto, Ltd., Osaka, JP;
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B 33/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A production method of amorphous silica comprises a step of preparing organic waste containing silicon oxide as a starting material, a step of immersing the organic waste in a carboxylic acid aqueous solution having a hydroxyl group, a step of washing the organic waste in water, and a step of heating the organic waste in the air atmosphere.