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:
Apr. 09, 2019
Filed:
Nov. 14, 2011
Applicants:
Kaiman Shimizu, Roth, DE;
Fumiko Sasaki, Iwaki, JP;
Yukitaka Watanabe, Iwaki, JP;
Masahiko Yazawa, Iwaki, JP;
Inventors:
Kaiman Shimizu, Roth, DE;
Fumiko Sasaki, Iwaki, JP;
Yukitaka Watanabe, Iwaki, JP;
Masahiko Yazawa, Iwaki, JP;
Assignee:
MERCK PATENT GMBH, Darmstadt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 5/23 (2006.01); B42D 15/00 (2006.01); C09D 11/322 (2014.01); C09C 1/00 (2006.01); H01F 1/37 (2006.01); C09D 11/037 (2014.01);
U.S. Cl.
CPC ...
C09D 5/23 (2013.01); B42D 15/00 (2013.01); C09C 1/0015 (2013.01); C09D 11/037 (2013.01); C09D 11/322 (2013.01); C01P 2006/42 (2013.01); C09C 2200/102 (2013.01); C09C 2200/1004 (2013.01); C09C 2200/301 (2013.01); C09C 2200/302 (2013.01); C09C 2200/401 (2013.01); C09C 2220/106 (2013.01); H01F 1/37 (2013.01);
Abstract
The present invention is related to magnetic pigments comprising a transparent flaky homogeneously composed substrate having two parallel major surfaces and a coating comprising a layered structure composed of a hematite and a magnetite layer, to a process for the production of said pigments as well as to their use.