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. 16, 2013
Filed:
May. 28, 2010
Ronald L. Crawford, Moscow, ID (US);
Malcolm B. Burbank, Pullman, WA (US);
Thomas J. Weaver, Moscow, ID (US);
Barbara C. Williams, Viola, ID (US);
Ronald L. Crawford, Moscow, ID (US);
Malcolm B. Burbank, Pullman, WA (US);
Thomas J. Weaver, Moscow, ID (US);
Barbara C. Williams, Viola, ID (US);
University of Idaho, Moscow, ID (US);
Abstract
A method for increasing the concentration of calcium carbonate in a geomaterial that contains indigenous microorganisms capable of hydrolyzing urea to ammonia, which method includes enriching the geomaterial with a source of nutrients, adding urea to the geomaterial which is hydrolyzed to ammonia and which raises the pH of the geomaterial, and adding a source of calcium ions to the geomaterial. Carbonate ions obtained by the hydrolysis of the urea combine with calcium ions to form calcium carbonate.