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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 11441041 B1

PDFFull Text
Date of Patent:
Sep. 13, 2022

Filed:

Oct. 15, 2019

Magnetic multilayer pigment flake and coating composition

Applicant:

Viavi Solutions Inc., San Jose, CA (US);

Inventors:

Vladimir P. Raksha, Santa Rosa, CA (US);

Paul T. Kohlmann, Windsor, CA (US);

Cornelis Jan Delst, Fairfax, CA (US);

Paul G. Coombs, Santa Rosa, CA (US);

Assignee:

VIAVI SOLUTIONS INC., San Jose, CA (US);

Attorney:

Mannava & Kang, P.C

Primary Examiner:

Tabassom Tadayyon Eslami

Int. Cl.
CPC ...
C09D 7/62 (2018.01); H01F 1/01 (2006.01); C09C 1/00 (2006.01); H01F 1/28 (2006.01); C09D 5/32 (2006.01); C09D 11/037 (2014.01); C09D 7/40 (2018.01); C09D 17/00 (2006.01); H01F 1/03 (2006.01); H01F 1/26 (2006.01);
U.S. Cl.
CPC ...
C09D 7/62 (2018.01); C09C 1/0015 (2013.01); C09D 5/32 (2013.01); C09D 7/70 (2018.01); C09D 11/037 (2013.01); C09D 17/004 (2013.01); H01F 1/01 (2013.01); H01F 1/0306 (2013.01); H01F 1/28 (2013.01); C01P 2004/54 (2013.01); C01P 2004/61 (2013.01); C01P 2006/42 (2013.01); C01P 2006/60 (2013.01); C09C 2200/1054 (2013.01); C09C 2210/00 (2013.01); H01F 1/26 (2013.01);
Abstract

The present invention provides a magnetic multilayer pigment flake and a magnetic coating composition that are relatively safe for human health and the environment. The pigment flake includes one or more magnetic layers of a magnetic alloy and one or more dielectric layers of a dielectric material. The magnetic alloy is an iron-chromium alloy or an iron-chromium-aluminum alloy, having a substantially nickel-free composition. The coating composition includes a plurality of the pigment flakes disposed in a binder medium.

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