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. 09, 2011
Filed:
Aug. 02, 2006
Applicants:
Richard D. Weir, Cedar Park, TX (US);
Carl W. Nelson, Austin, TX (US);
Inventors:
Richard D. Weir, Cedar Park, TX (US);
Carl W. Nelson, Austin, TX (US);
Assignee:
EEStor, Inc., Cedar Park, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B 31/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Wet-chemical methods involving the use of water-soluble hydrolytically stable metal-ion chelate precursors and an ammonium oxalate precipitant can be used in a coprecipitation procedure for the preparation of ceramic powders. Both the precursor solution and the ammonium oxalate precipitant solution are at neutral or near-neutral pH. A composition-modified barium titanate is one of the ceramic powders that can be produced. Certain metal-ion chelates can be prepared from 2-hydroxypropanoic acid and ammonium hydroxide.