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. 10, 2023
Filed:
Aug. 24, 2018
Applicant:
Evonik Operations Gmbh, Essen, DE;
Inventors:
John M. Cornelius, Forest Hills, MD (US);
William J. Hagar, Perryville, MD (US);
Karl W. Gallis, Perryville, MD (US);
Terry W. Nassivera, Gambrills, MD (US);
Assignee:
Evonik Operations GmbH, Essen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C01B 33/193 (2006.01); A61K 8/02 (2006.01); A61K 8/25 (2006.01); A61Q 11/00 (2006.01);
U.S. Cl.
CPC ...
C01B 33/193 (2013.01); A61K 8/025 (2013.01); A61K 8/25 (2013.01); A61Q 11/00 (2013.01); A61K 2800/28 (2013.01); A61K 2800/412 (2013.01); C01P 2004/32 (2013.01); C01P 2004/61 (2013.01); C01P 2006/12 (2013.01); C01P 2006/19 (2013.01);
Abstract
Spherical silica and/or silicate particles having a d50 median particle size from 1 to 5 μm, a d95 particle size less than 8 μm, an oil absorption from 40 to 100 cc/100 g, a pack density from 20 to 60 lb/ft, and a sphericity factor (S) of at least 0.9, are disclosed, as well as methods for making these spherical particles, and dentifrice compositions containing the spherical particles.