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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.:

US 5002609 B1

PDFFull Text
Date of Patent:
Mar. 26, 1991

Filed:

Mar. 26, 1990

Iron oxide black pigment granules, processes for their preparation and

Applicant:
Inventors:

Jakob Rademachers, Krefeld, DE;

Wolfgang Bockelmann, Krefeld, DE;

Klaus Gauler, Krefeld, DE;

Assignee:

Bayer Aktiengesellschaft, Leverkusen-Bayerwerk, DE;

Attorney:

Connolly and Hutz

Primary Examiner:

Mark L Bell

Assistant Examiner:

Chris Gallo

Int. Cl.
CPC ...
C09C / ;
U.S. Cl.
CPC ...
106456 ; 423634 ; 252 6256 ;
Abstract

A process is disclosed for preparing dispersant-free iron oxide pigment granules by spraying or atomizing an iron oxide black pigment suspension and heating the resulting granules at a temperature of 400.degree.-800.degree. C. The granules are useful for coloring building materials such as concrete.

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Rademachers, Jakob. (1991). Iron oxide black pigment granules, processes for their preparation and (U.S. Patent No. 5002609). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5002609

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