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:
Jun. 12, 2018
Filed:
Sep. 04, 2007
Albert Gary Difrancesco, Rochester, NY (US);
Richard K. Hailstone, North Chili, NY (US);
Andreas Langner, Pittsford, NY (US);
Kenneth J. Reed, Rochester, NY (US);
Albert Gary Difrancesco, Rochester, NY (US);
Richard K. Hailstone, North Chili, NY (US);
Andreas Langner, Pittsford, NY (US);
Kenneth J. Reed, Rochester, NY (US);
CERION, LLC, Rochester, NY (US);
Abstract
A method of making cerium dioxide nanoparticles includes: a) providing an aqueous reaction mixture having a source of cerous ion, a source of hydroxide ion, a nanoparticle stabilizer, and an oxidant at an initial temperature no higher than about 20° C.; b) mechanically shearing the mixture and causing it to pass through a perforated screen, thereby forming a suspension of cerium hydroxide nanoparticles; and c) raising the initial temperature to achieve oxidation of cerous ion to eerie ion and thereby form cerium dioxide nanoparticles having a mean diameter in the range of about 1 nm to about 15 nm. The cerium dioxide nanoparticles may be formed in a continuous process.