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:
Jun. 23, 2026
Filed:
Oct. 18, 2021
Applicant:
Evonik Operations Gmbh, Essen, DE;
Inventors:
André Wehmeier, Bornheim, DE;
Dominik Maschke, Erftstadt, DE;
Agnieszka Ochenduszko, Attinghausen, CH;
Assignee:
Evonik Operations GmbH, Essen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C01B 33/193 (2006.01); C08L 9/00 (2006.01);
U.S. Cl.
CPC ...
C01B 33/193 (2013.01); C08L 9/00 (2013.01); C01P 2006/14 (2013.01);
Abstract
Precipitated silicas having, a N-cetyl-N,N,N-trimethylammonium bromide (CTAB) surface area ≤115 m/g, a dioctyl adipate (DOA) absorption ≥130 ml/(100 g), a RoTap for >300 μm of ≥86%, and a pore volume distribution of V (d5−d50)/V (d5−d100)<0.66. A method of producing the precipitated silicas.