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:
Sep. 12, 2023
Filed:
Jan. 05, 2017
Applicant:
Omya International Ag, Oftringen, CH;
Inventors:
Samuel Rentsch, Spiegel bei Bern, CH;
Matthias Welker, HĂ©singue, FR;
Patrick A. C. Gane, Rothrist, CH;
Assignee:
Omya International AG, Oftringen, CH;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09C 1/02 (2006.01); C01F 11/18 (2006.01);
U.S. Cl.
CPC ...
C09C 1/021 (2013.01); C01F 11/185 (2013.01); C01P 2004/62 (2013.01); C01P 2006/10 (2013.01); C01P 2006/11 (2013.01); C01P 2006/12 (2013.01);
Abstract
The present invention relates to a method for the treatment of a surface-reacted calcium carbonate, wherein the treatment agent is selected from the group consisting of ascorbic acid and/or salts thereof, gallic acid and/or salts thereof, unsaturated fatty acids and/or salts thereof, elemental iron, iron (II)-salts, iron (II)-comprising oxides, iron (II, III)-comprising oxides and mixtures thereof, a treated surface-reacted calcium carbonate as well as a use of the treated surface-reacted calcium carbonate as oxygen scavenger.