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:
Jan. 01, 2013
Filed:
Feb. 27, 2012
Ralph Bauer, Niagara Falls, CA;
Andrew G. Haerle, Sutton, MA (US);
Doruk O. Yener, Grafton, MA (US);
Claire M. Theron, Marlboro, MA (US);
Michael D. Kavanaugh, North Grafton, MA (US);
Ralph Bauer, Niagara Falls, CA;
Andrew G. Haerle, Sutton, MA (US);
Doruk O. Yener, Grafton, MA (US);
Claire M. Theron, Marlboro, MA (US);
Michael D. Kavanaugh, North Grafton, MA (US);
Saint-Gobain Ceramics & Plastics, Inc., Worcester, MA (US);
Abstract
Processes for forming ceramic particulate material. The ceramic particulate material includes alumina particles, the particles having a specific surface area (SSA) not less than 15 m/g and not greater than 75 m/g and a sphericity quantified by at least one of (i) a mean roundness not less than 0.710 as measured by Roundness Correlation Image Analysis, and (ii) a concavity less than 20%, wherein concavity is the percent of alumina particles based on a sample of at least 100 particles, which have a concave outer peripheral portion that extends along a distance not less than 10% of dby TEM inspection, the concave outer peripheral portion having a negative radius of curvature as viewed from an interior of the particle.