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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.:

US 12215034 B1

PDFFull Text
Date of Patent:
Feb. 04, 2025

Filed:

Jun. 12, 2019

Spherical stannous compatible silica particles for reduced rda

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;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Smita S Patel

Int. Cl.
CPC ...
C01B 33/187 (2006.01);
U.S. Cl.
CPC ...
C01B 33/187 (2013.01); C01P 2004/32 (2013.01); C01P 2004/61 (2013.01); C01P 2006/10 (2013.01); C01P 2006/12 (2013.01); C01P 2006/14 (2013.01);
Abstract

Silica particles having a d50 median particle size from 8 to 20 μm, a sphericity factor (S) of at least 0.9, a BET surface area from 0.1 to 8 m/g, a total mercury intrusion pore volume from 0.35 to 0.8 cc/g, and a loss on ignition from 3 to 7 wt. %, are disclosed, as well as methods for making these silica particles, and dentifrice compositions containing the silica particles.

Find Patent Forward Citations

Gallis, Karl. (2025). Spherical stannous compatible silica particles for reduced rda (U.S. Patent No. 12215034). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12215034

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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