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:
Jul. 16, 2024
Filed:
Dec. 01, 2017
Applicant:
Evonik Operations Gmbh, Essen, DE;
Inventors:
Karl W. Gallis, Perryville, MD (US);
William J. Hagar, Perryville, MD (US);
Terry W. Nassivera, Gambrills, MD (US);
Lawrence Edward Dolan, Cincinnati, OH (US);
Sanjeev Midha, Mason, OH (US);
Eva Schneiderman, Mason, OH (US);
Assignee:
Evonik Operations GmbH, Essen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C01B 33/18 (2006.01); C01B 33/193 (2006.01);
U.S. Cl.
CPC ...
C01B 33/193 (2013.01); C01P 2006/11 (2013.01); C01P 2006/12 (2013.01); C01P 2006/14 (2013.01);
Abstract
Silica particles having a BET surface area from 0.1 to 7 m/g, a pack density from 35 to 55 lb/ft, an Einlehner abrasion value from 8 to 25 mg lost/100,000 revolutions, a total mercury intrusion pore volume from 0.7 to 1.2 cc/g, and a stannous compatibility from 70 to 99%, are disclosed, as well as methods for making these silica particles.