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:
Oct. 29, 1996
Filed:
Apr. 22, 1991
David A Barclay, Austin, TX (US);
Duane J Lewis, Austin, TX (US);
Lewis B Decker, Jr, Lago Vista, TX (US);
William R Carradine, Austin, TX (US);
Condea Vista Company, Houston, TX (US);
Abstract
A process for growing crystals at an enhanced rate comprising providing a dispersion of a fluid medium and seed crystals of a metal oxide, introducing feed material comprising a metal oxide into the dispersion and maintaining a uniform mixture of the seed crystals, the feed material and the fluid medium, the feed material having an average crystal size less than the average crystal size of the seed crystals, the feed material being added in an amount and at a rate whereby the seed crystals grow, the feed material providing a soluble nutrient species for deposition of the said crystal to effect crystal growth, the mixture of seed crystals and feed material being treated under conditions which stimulate crystal growth for a period of time sufficient to obtain a desired quantity of a product comprising at least one grown crystal having an average crystal size greater than the average crystal size of the seed crystal.