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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 11499054 B1

PDFFull Text
Date of Patent:
Nov. 15, 2022

Filed:

Dec. 17, 2019

Coated powders having high photostability

Applicant:

Nanophase Technologies Corporation, Romeoville, IL (US);

Inventors:

Harry W. Sarkas, Shorewood, IL (US);

Abigail R. Hooper, Braidwood, IL (US);

Nathan H. Hoffmann, New Lenox, IL (US);

Assignee:

Nanophase Technologies Corporation, Romeoville, IL (US);

Attorney:

Evan Law Group LLC

Primary Examiner:

Nicole P Babson

Int. Cl.
CPC ...
C09C 3/10 (2006.01); C09C 1/36 (2006.01); C09C 1/04 (2006.01); C09C 3/06 (2006.01); C09C 3/08 (2006.01); A61K 8/02 (2006.01); A61K 8/27 (2006.01); A61K 8/29 (2006.01); A61K 8/25 (2006.01); A61K 8/58 (2006.01); A61K 8/891 (2006.01); A61Q 17/04 (2006.01); A61Q 19/08 (2006.01); C09K 15/08 (2006.01); C09B 67/02 (2006.01); B01J 13/14 (2006.01); C09C 3/00 (2006.01);
U.S. Cl.
CPC ...
C09C 3/10 (2013.01); A61K 8/0241 (2013.01); A61K 8/25 (2013.01); A61K 8/27 (2013.01); A61K 8/29 (2013.01); A61K 8/585 (2013.01); A61K 8/891 (2013.01); A61Q 17/04 (2013.01); A61Q 19/08 (2013.01); B01J 13/14 (2013.01); C09B 67/0097 (2013.01); C09C 1/043 (2013.01); C09C 1/3684 (2013.01); C09C 3/00 (2013.01); C09C 3/063 (2013.01); C09C 3/08 (2013.01); C09K 15/08 (2013.01); A61K 2800/412 (2013.01); A61K 2800/621 (2013.01); A61K 2800/622 (2013.01); A61K 2800/623 (2013.01); A61K 2800/624 (2013.01); C01P 2004/64 (2013.01); C01P 2006/12 (2013.01);
Abstract

A coated powder comprises (a) particles, and (b) a coating on the surface of the particles including (1) silica moieties, (2) organo oxysilane moieties selected from the group consisting of mono-organo oxysilane moieties, bi-organo oxysilane moieties and tri-organo oxysilane moieties, and (3) poly(dialkyl)siloxane moieties. The amount by weight in SiOequivalents of the organo oxysilane moieties and the silica moieties is at least 0.0625% of the total coated powder weight per m/g of the specific surface area of the particle to be coated.

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