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:
Feb. 06, 2024
Filed:
Apr. 14, 2022
Applicant:
Merck Patent Gmbh, Darmstadt, DE;
Inventors:
Ryuta Suzuki, Iwaki, JP;
Gerhard Pfaff, Muenster, DE;
Sabine Schoen, Herten, DE;
Noriyuki Matsuda, Chiba, JP;
Katsuhisa Nitta, Iwaki, JP;
Assignee:
MERCK PATENT GMBH, Darmstadt, DE;
Primary Examiner:
Int. Cl.
CPC ...
C09D 7/62 (2018.01); C09D 7/40 (2018.01); C01F 7/02 (2022.01); C01F 7/34 (2006.01); C01F 7/441 (2022.01); C09C 1/00 (2006.01); C08K 3/22 (2006.01);
U.S. Cl.
CPC ...
C09D 7/62 (2018.01); C01F 7/02 (2013.01); C01F 7/34 (2013.01); C01F 7/441 (2013.01); C09C 1/0015 (2013.01); C09C 1/0021 (2013.01); C09C 1/0024 (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 2004/61 (2013.01); C01P 2004/62 (2013.01); C08K 3/22 (2013.01); Y10T 428/2982 (2015.01);
Abstract
Alpha-Alumina flakes having a particle thickness of 130-400 nm, a D-value of 15-30 μm, a D-value of 30-45 μm and a D-value of <9.5 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.