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:
Jan. 07, 2025
Filed:
Jan. 15, 2020
Applicant:
Lanxess Deutschland Gmbh, Cologne, DE;
Inventors:
Larissa Schaufler, Essen, DE;
Anna Weber-Czaplik, Duesseldorf, DE;
Carsten Rosenhahn, Kempen, DE;
Christine Kathrein, Duesseldorf, DE;
Assignee:
LANXESS Deutschland GmbH, Cologne, DE;
Primary Examiner:
Int. Cl.
CPC ...
C01G 49/06 (2006.01);
U.S. Cl.
CPC ...
C01G 49/06 (2013.01); C01P 2004/64 (2013.01); C01P 2006/12 (2013.01); C01P 2006/63 (2013.01); C01P 2006/80 (2013.01);
Abstract
Process for producing a haematite pigment having an a* value greater than 20, especially greater than 25, CIELAB units measured as a full shade in alkyd resin to DIN EN ISO 787-25:2007, by reacting iron sulfate with oxygen in the presence of a pigment seed, characterized in that