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:
Nov. 26, 2019
Filed:
Nov. 03, 2017
Applicant:
Ppg Industries Ohio, Inc., Cleveland, OH (US);
Inventors:
Xiaofeng Zhang, Gibsonia, PA (US);
Raphael O. Kollah, Wexford, PA (US);
Assignee:
PPG Industries Ohio, Inc., Cleveland, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B 33/12 (2006.01); C01B 33/193 (2006.01); C09C 1/30 (2006.01); C01B 33/18 (2006.01);
U.S. Cl.
CPC ...
C01B 33/128 (2013.01); C01B 33/18 (2013.01); C01B 33/193 (2013.01); C09C 1/3018 (2013.01); C09C 1/3027 (2013.01); C01P 2004/32 (2013.01); C01P 2004/51 (2013.01); C01P 2004/60 (2013.01); C01P 2006/11 (2013.01); C01P 2006/12 (2013.01); C01P 2006/19 (2013.01); C01P 2006/20 (2013.01);
Abstract
Spherically-shaped silica can include a precipitated silica powder having a dparticle size selected within a range of greater than 20 μm and up to 80 μm, a di-octyl adipate oil absorption selected within a range of from 150 ml/100 g to 500 ml/100 g, an average circularity selected within a range of from 0.70 to 1.0, and an angle of repose, of less than 30°. A process of preparing spherically-shaped silica powder is also included.