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:
Mar. 05, 2019
Filed:
Nov. 08, 2013
Applicants:
Lanxess Deutschland Gmbh, Cologne, DE;
Lanxess Specialty Chemicals Co., Ltd., Shanghai, CN;
Inventors:
Waldemar Czaplik, Burscheid, DE;
Juergen Kischkewitz, Ratingen, DE;
Wolfgang Oehlert, Shanghai, CN;
Huajun Li, Shanghai, CN;
Assignee:
LANXESS Deutschland GmbH, Cologne, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/00 (2006.01); C09D 17/00 (2006.01); C01G 49/06 (2006.01); C09C 1/24 (2006.01); B01D 53/56 (2006.01); B01D 53/78 (2006.01); B01J 8/00 (2006.01); B01J 10/00 (2006.01); C02F 1/58 (2006.01); C02F 101/16 (2006.01); C02F 103/34 (2006.01);
U.S. Cl.
CPC ...
C09D 17/007 (2013.01); B01D 53/005 (2013.01); B01D 53/007 (2013.01); B01D 53/56 (2013.01); B01D 53/78 (2013.01); B01J 8/00 (2013.01); B01J 10/00 (2013.01); C01G 49/06 (2013.01); C02F 1/58 (2013.01); C02F 1/586 (2013.01); C09C 1/24 (2013.01); B01D 2259/804 (2013.01); B01J 2208/00893 (2013.01); C01P 2004/64 (2013.01); C01P 2006/12 (2013.01); C02F 2101/16 (2013.01); C02F 2103/34 (2013.01);
Abstract
The present invention relates to an improved process for producing red iron oxide pigments by the Penniman process with nitrate (also called nitrate process or direct red process) and to apparatus for implementing this process, and also to the use of the plant for producing red iron oxide pigments by the Penniman process with nitrate.