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:
Apr. 30, 2002
Filed:
Oct. 24, 2000
Dennis D. Eberl, Boulder, CO (US);
Daniel E. Kile, Aurora, CO (US);
Anthony R. Hoch, Appleton, WI (US);
The United States of America as represented by the Secretary of the Interior, Washington, DC (US);
Abstract
A method is provided for the manufacture of mineral power crystals having a uniform mean size. The method includes forming a solution which is highly supersaturated with respect to the crystals. The crystals of the solution are Ostwald ripened at a level of supersaturation that produces an Ostwald steady state crystal size distribution shape wherein the crystals are of a uniform size. After Ostwald ripening ceases, the crystals further grow by supply controlled growth which uniformly increases the size thereof. This enables the supply controlled growth to be terminated at a selected, controlled point so as to produce a desired mean crystal size.