US Patent No: 7,998,266

Number of patents in Portfolio can not be more than 2000

Colored metallic pigment, process for producing the same, and coating composition and cosmetic preparation containing said colored metallic pigment

ALSO PUBLISHED AS: 20090017082

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Abstract

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This invention provides a colored metallic pigment, which can develop a variety of colors and varied interference colors while maintaining good lightfastness, weatherfastness and hiding power, a process for producing the same, a coating composition containing the colored metallic pigment and capable of providing a coating film having excellent finished appearance, and a cosmetic preparation containing the colored metallic pigment, having excellent hiding power, and capable of providing sharp hue. The colored metallic pigment comprises at least a metallic pigment, an amorphous silicon oxide film layer provided on the surface of the metallic pigment, a metal layer provided on the surface of the amorphous silicon oxide film layer, and metallic particles provided on the surface of the metal layer. The metallic particles are provided so as to directly cover a part of the surface of the metal layer. In the colored metallic pigment, the metal layer preferably comprises at least one metal selected from Sn, Pd, Pt and Au. The metallic particle preferably comprises at least one metal selected from Cu, Ni and Ag.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
TOYO ALUMINIUM KABUSHIKI KAISHAOSAKA, JP77

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hashizume, Yoshiki Osaka, JP 33 157
Minamiyama, Hideaki - 3 3
Morimitsu, Taro Osaka, JP 12 19
Nakamura, Masakazu Hachioji, JP 93 917
Nakao, Takayuki Mobara, JP 52 72

Cited Art Landscape

Patent Info (Count) # Cites Year
 
BASF AKTIENGESELLSCHAFT (4)
4,328,042 Preparation of metallic pigments having a metallic luster 33 1980
4,978,394 Metal oxide coated aluminum pigments 66 1989
5,364,467 Luster pigments based on multiply coated plateletlike metalic substrates 92 1993
5,607,504 Multiply coated metallic luster pigments 70 1994
 
MERCK PATENT GMBH (1)
6,776,835 Multilayer pigments based on coated metal platelets 5 2003
 
Toro Ganryo Kogyo Co., Ltd. (1)
4,375,373 Method of coating inorganic pigments (ultramarine and bronze powder) with dense amorphous silica 37 1981
 
Other [Check patent profile for assignment information] (1)
2004/0219,344 Multilayered systems having optical properties 2 2004

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