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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 10457812 B1

PDFFull Text
Date of Patent:
Oct. 29, 2019

Filed:

Apr. 25, 2014

α-alumina flakes

Applicant:

Merck Patent Gmbh, Darmstadt, DE;

Inventors:

Ryuta Suzuki, Fukushima Ken, JP;

Gerhard Pfaff, Muenster, DE;

Sabine Schoen, Herten, DE;

Fumiko Sasaki, Iwaki, JP;

Satoru Kobayashi, Fukushima, JP;

Koshiro Kunii, Fukushima Ken, JP;

Yuji Takenaka, Iwaki, JP;

Katsuhisa Nitta, Fukushima Ken, JP;

Assignee:

Merck Patent GmbH, Darmstadt, DE;

Attorneys:

Millen White Zelano and Branigan, PC

Csaba Henter

Primary Examiner:

Ronak C Patel

Int. Cl.
CPC ...
C09C 1/40 (2006.01); C01F 7/02 (2006.01); C01F 7/34 (2006.01); C01F 7/44 (2006.01); C09C 1/00 (2006.01); C09D 7/40 (2018.01); C08K 3/22 (2006.01);
U.S. Cl.
CPC ...
C09C 1/407 (2013.01); C01F 7/02 (2013.01); C01F 7/34 (2013.01); C01F 7/441 (2013.01); C09C 1/0018 (2013.01); C09C 1/0021 (2013.01); C09C 1/0024 (2013.01); C09C 1/0039 (2013.01); C09C 1/0051 (2013.01); C09C 1/0066 (2013.01); C09D 7/70 (2018.01); C01P 2002/52 (2013.01); C01P 2002/84 (2013.01); C01P 2004/20 (2013.01); C01P 2004/24 (2013.01); C01P 2004/51 (2013.01); C01P 2004/54 (2013.01); C01P 2004/61 (2013.01); C08K 3/22 (2013.01); C09C 2200/1004 (2013.01); C09C 2200/301 (2013.01); Y10T 428/2982 (2015.01);
Abstract

Alpha-Alumina flakes having a particle thickness of 550-1000 nm, a D-value of 15-30 μm, a D-value of 30-45 μm and a D-value of ≤9.0 μm. Use of the alumina flakes in varnishes, paints, automotive coatings printing inks, masterbatches, plastics and cosmetic formulations. Also, use of the alumina flakes as a substrate for effect pigments and in organic dyes.

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Suzuki, Ryuta. (2019). α-alumina flakes (U.S. Patent No. 10457812). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10457812

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