US Patent No: 5,972,098

Number of patents in Portfolio can not be more than 2000

Titanate-containing pearlescent pigments

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Abstract

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Single-layer or multilayer titanate-containing pearlescent pigments comprising iron titanate and, if appropriate, titanium oxide and/or iron oxide, which is obtainable by solidification of an aqueous solution of a thermally hydrolysable titanium compound on a continuous belt, detachment of the layer formed, coating of the resulting titanium dioxide platelets, after or without intermediate drying, with iron oxide in a wet process, and drying and calcining of the resulting material in an oxidizing or reducing gas atmosphere at not less than 500.degree. C., the layer thicknesses of the titanium dioxide layer and iron dioxide layer being adjusted such that either the stoichiometric ratio between iron oxide and titanium dioxide necessary for the formation of pseudo-brookite or ilmenite is obtained or an excess of iron oxide or titanium dioxide is present.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
MERCK PATENT GMBHDARMSTADT2079

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Andes, Stefanie Maintal, DE 3 117
Brenner, Gunter Griesheim, DE 11 189
Bruckner, Dieter Darmstadt, DE 20 320
Heyland, Andrea Ober-Kainsbach, DE 15 253
Hock, Sabine Schaafheim, DE 2 26
Kuntz, Matthias Seeheim, DE 60 662
Osterried, Karl Dieburg, DE 19 321
Pfaff, Gerhard Munster, DE 66 845
Schmelz, Michael Kriftel, DE 23 215

Cited Art Landscape

Patent Info (Count) # Cites Year
 
MERCK PATENT GMBH (2)
* 4,744,832 Iron oxide coated perlescent pigments 34 1986
* 5,009,711 Golden color luster pigments 19 1988
 
BASF AKTIENGESELLSCHAFT (1)
* 4,344,987 Preparation of flaky mica pigments coated with metal oxides, and use of these pigments 35 1981
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
ECKART GMBH (3)
9,265,701 Highly lustrous silver-colored pigments with high opacity and metallic appearance, process for the preparation thereof and use of same 0 2012
9,084,732 Cosmetic formulations comprising high gloss non-metallic silver-colored pigments 0 2012
9,051,471 Weather-resistant pearlescent pigments, process for the production and use thereof 0 2012
 
BASF CORPORATION (2)
6,663,951 Two layer coating system having an enhanced visual effect 2 2000
* 2007/0134,177 Effect Materials 4 2006
 
SABIC INNOVATIVE PLASTICS IP B.V. (1)
* 6,376,075 Article having reflecting coating and process for the manufacture 31 2000
 
Ciba Specialty Chemicals Corporation (1)
* 2007/0015,012 Process for the treatment of particles 12 2006
 
Nihon Koken Kogyo KK (4)
8,016,934 Pearlescent pigment 5 2005
* 2006/0144,294 Pearlescent pigment 7 2005
* 2006/0144,295 Pearlescent pigment 1 2005
8,153,163 Pearlescent pigment 1 2011
 
The United States of America as represented by the Secretary of the Army (1)
* 2007/0099,015 Composite sliding surfaces for sliding members 3 2006
 
CIBA CORPORATION (1)
* 2011/0105,676 PROCESS FOR PREPARING PLATELET-LIKE PIGMENTS COMPRISING A NITROGEN DOPED CARBON COATING 1 2008
 
MERCK PATENT GMBH (7)
* 6,280,520 Multilayer pearl luster pigment based on an opaque substrate 24 1999
* 6,284,032 Multilayer interference pigments 13 2001
* 6,767,633 Transparent medium having angle-selective transmission or reflection properties and/or absorption properties 9 2002
* 7,611,574 Interference pigment with a high covering power 3 2004
* 2007/0028,799 Interference pigment with a high covering power 17 2004
* 8,940,189 Intensely coloured and/or optically variable pigments having an electrically conductive core 0 2008
* 2010/0270,510 INTENSELY COLOURED AND/OR OPTICALLY VARIABLE PIGMENTS HAVING AN ELECTRICALLY CONDUCTIVE CORE 1 2008
 
JOHNSON & JOHNSON CONSUMER INC. (4)
9,320,687 Pigmented skin-care compositions 0 2013
9,168,209 Pigmented skin-care compositions 0 2013
9,168,393 Pigmented skin-care compositions 0 2013
9,168,394 Pigmented skin-care compositions 0 2013
 
TOKAN MATERIAL TECHNOLOGY CO., LTD. (1)
6,540,824 Titanium-iron based composite oxide pigment and method for production thereof 1 2002
* Cited By Examiner