US Patent No: 6,013,370

Number of patents in Portfolio can not be more than 2000

Bright metal flake

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Abstract

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A rigid and brittle bright metal flake is formed of a central layer of a reflective material supported on both sides by dielectric layers. In a preferred embodiment, the metal layer is aluminum having a thickness of about 100 nm and the dielectrics are either silicon dioxide or magnesium fluoride, each having a thickness of about 100 nm. The result is a very thin three-layered metal flake about 300 nm thick that exhibits a uniaxial compressive strength of about 8 times a corresponding uniaxial tensile strength. As a result, the metal flake is then afforded the benefits of rigidity and brittle fracture during the manufacturing and applicational processes which ultimately provides favorable planar and specular reflectance characteristics in the visible wavelength range.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
JDS UNIPHASE CORPORATIONSAN JOSE, CA291

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Coulter, Kent Santa Rosa, CA 2 73
Mayer, Thomas Santa Rosa, CA 130 1805
Phillips, Roger W Santa Rosa, CA 115 3605

Cited Art Landscape

Patent Info (Count) # Cites Year
 
TOYO ALUMINIUM KABUSHIKI KAISHA (1)
* 5,766,334 Colored titanium flakes, process for their preparation and resin composition containing colored titanium flakes 34 1996
 
ECKART GMBH (1)
* 5,332,767 Synthetic resin-coated metal pigment, process for the production thereof and use thereof 64 1991
 
YKK CORPORATION (1)
* 5,198,042 Aluminum alloy powders for coating materials, and coating materials containing the alloy powders 42 1991
 
WHK, INC. (1)
* 4,321,087 Process for making metallic leafing pigments 68 1980
 
Silberline Limited (1)
* 5,593,773 Metal powder pigment 45 1995
 
Ciba Specialty Chemicals Corporation (1)
* 5,766,335 Colored luster pigments 58 1997
 
VIAVI SOLUTIONS INC. (1)
* 4,838,648 Thin film structure having magnetic and color shifting properties 119 1988
 
HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN (HENKEL KGAA) (1)
* 4,756,771 Colorless sealing layers for anodized aluminum surfaces 71 1987
 
SIBERLINE MANUFACTURING CO., INC., A CORP. OF IN (1)
* 4,629,512 Leafing aluminum pigments of improved quality 29 1985
 
JDS UNIPHASE CORPORATION (1)
* 5,135,812 Optically variable thin film flake and collection of the same 137 1991
 
BASF AKTIENGESELLSCHAFT (3)
* 4,552,593 Preparation of effect pigments coated with metal oxides 64 1983
* 4,978,394 Metal oxide coated aluminum pigments 67 1989
* 5,763,086 Goniochromatic luster pigments with silicon-containing coating 67 1996
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
GENERAL ELECTRIC COMPANY (1)
* 6,586,046 Fluidized bed apparatus and method for treatment of nonspherical, nonequiaxed particles 5 2000
 
Other [Check patent profile for assignment information] (1)
* 2004/0101,676 Optically variable security devices 37 2003
 
ECKART GMBH (3)
* 6,287,695 Corrosion-stable aluminum pigments and process for the production thereof 8 1997
* 9,260,584 Coated, wet-chemically oxidized aluminum effect pigments, method for the production thereof, coating agent and coated object 0 2012
* 2015/0098,972 Coated, Wet-Chemically Oxidized Aluminum Effect Pigments, Method for the Production Thereof, Coating Agent and Coated Object 0 2012
 
ENGELHARD CORPORATION (4)
6,325,847 Precious metal color effect materials and production thereof 18 1999
6,475,273 Color effect materials and production thereof 0 2000
6,440,208 Alloy color effect materials and production thereof 11 2000
6,582,764 Hybrid inorganic/organic color effect materials and production thereof 11 2001
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (4)
7,349,155 Screen having a layer of reflectors 2 2004
* 2005/0128,581 Bragg reflector 0 2004
* 7,189,284 Ink with bragg reflectors 0 2004
* 2005/0094,265 Ink with bragg reflectors 1 2004
 
Ciba Specialty Chemicals Corporation (1)
* 2006/0111,466 Process for printing substrates according to the ink-jet printing method 24 2003
 
KUEHNLE, MANFRED R. (1)
* 2008/0199,701 Encapsulated nanoparticles for the absorption of electromagnetic energy 3 2006
 
ECKART-WERKE STANDARD BRONZEPULVER WERKE CARL ECKART GMBH & CO. (1)
* 2002/0168,484 Corrosion-stable aluminum pigments and process for the production thereof 3 2002
 
VIAVI SOLUTIONS INC. (44)
* 6,157,489 Color shifting thin film pigments 52 1998
6,545,809 Color shifting carbon-containing interference pigments 19 1999
6,246,523 Methods of fabricating color shifting thin film pigments 18 2000
6,243,204 Color shifting thin film pigments 42 2000
6,236,510 Color shifting thin film pigments 6 2000
6,586,098 Composite reflective flake based pigments comprising reflector layers on bothside of a support layer 46 2000
6,572,784 Luminescent pigments and foils with color-shifting properties 66 2000
6,692,830 Diffractive pigment flakes and compositions 40 2001
6,749,936 Achromatic multilayer diffractive pigments and foils 36 2001
6,841,238 Chromatic diffractive pigments and foils 38 2002
6,749,777 Diffractive pigment flakes and compositions 40 2002
* 2003/0104,206 Diffractive pigment flakes and compositions 2 2002
6,759,097 Methods for producing imaged coated articles by using magnetic pigments 38 2002
* 2003/0165,637 Methods for producing imaged coated articles by using magnetic pigments 4 2002
6,751,022 Color shifting carbon-containing interference pigments and foils 35 2003
6,744,559 Color shifting carbon-containing interference pigments and foils 11 2003
6,818,299 Multi-layered magnetic pigments and foils 38 2003
7,169,472 Robust multilayer magnetic pigments and foils 8 2003
6,699,313 Composite reflective flake based pigments 9 2003
6,838,166 Multi-layered magnetic pigments and foils 59 2003
* 2004/0028,905 Multi-layered magnetic pigments and foils 7 2003
6,987,590 Patterned reflective optical structures 50 2003
6,833,959 Color shifting carbon-containing interference pigments 9 2004
6,831,785 Color shifting carbon-containing interference pigments 5 2004
* 2004/0165,272 Color shifting carbon-containing interference pigments 1 2004
* 2004/0160,672 Color shifting carbon-containing interference pigments 0 2004
7,224,528 Optically variable security devices 21 2005
* 2005/0128,543 Optically variable security devices 37 2005
7,667,895 Patterned structures with optically variable effects 4 2005
* 2006/0077,496 Patterned structures with optically variable effects 33 2005
7,674,501 Two-step method of coating an article for security printing by application of electric or magnetic field 2 2006
* 2006/0194,040 Two-step method of coating an article for security printing 19 2006
7,630,109 Covert security coating 0 2006
* 2006/0285,184 Covert Security Coating 9 2006
7,876,481 Patterned optical structures with enhanced security feature 2 2006
7,729,026 Security device with metameric features using diffractive pigment flakes 2 2006
* 2010/0002,275 Security Device With Metameric Features Using Diffractive Pigment Flakes 1 2006
8,025,952 Printed magnetic ink overt security image 1 2007
9,164,575 Provision of frames or borders around pigment flakes for covert security applications 0 2007
* 8,241,748 High chroma optically variable color-shifting strand and woven products 2 2009
9,027,479 Method and apparatus for orienting magnetic flakes 0 2009
9,257,059 Dynamic appearance-changing optical devices (DACOD) printed in a shaped magnetic field including printable fresnel structures 0 2012
9,102,195 Article with curved patterns formed of aligned pigment flakes 0 2013
RE45762 Printed magnetic ink overt security image 0 2013
 
FLEX PROODUCTS, INC. (1)
6,569,529 Titanium-containing interference pigments and foils with color shifting properties 23 2000
 
JDS UNIPHASE CORPORATION (42)
* 6,150,022 Bright metal flake based pigments 80 1998
6,761,959 Diffractive surfaces with color shifting backgrounds 44 1999
6,241,858 Methods and apparatus for producing enhanced interference pigments 46 1999
6,524,381 Methods for producing enhanced interference pigments 10 2000
6,387,498 Bright metal flake based pigments 23 2000
6,686,042 Optically variable pigments and foils with enhanced color shifting properties 11 2000
6,383,638 Bright metal flake based pigments 12 2000
6,565,770 Color-shifting pigments and foils with luminescent coatings 88 2000
6,997,981 Thermal control interface coatings and pigments 20 2002
6,676,741 Methods for producing enhanced interference pigments 7 2003
6,991,860 Titanium-containing interference pigments and foils with color shifting properties 11 2003
6,933,048 Titanium-containing interference pigments and foils with color shifting properties 3 2003
6,849,343 Titanium-containing interference pigments and foils with color shifting properties 5 2003
* 2003/0215,641 Titanium-containing interference pigments and foils with color shifting properties 0 2003
7,005,178 Security articles having diffractive surfaces and color shifting backgrounds 12 2003
* 2004/0081,807 Security articles having diffractive surfaces and color shifting backgrounds 8 2003
7,754,112 Methods for forming security articles having diffractive surfaces and color shifting backgrounds 0 2003
7,029,745 Security articles having diffractive surfaces and color shifting backgrounds 16 2003
* 2004/0105,963 Security articles having diffractive surfaces and color shifting backgrounds 8 2003
* 2004/0094,850 Methods for forming security articles having diffractive surfaces and color shifting backgrounds 29 2003
7,235,300 Titanium-containing interference pigments and foils with color shifting properties 3 2005
* 2005/0287,369 Titanium-containing interference pigments and foils with color shifting properties 0 2005
* 2006/0023,327 Thermal control interface coatings and pigments 8 2005
7,645,510 Provision of frames or borders around opaque flakes for covert security applications 3 2005
* 2006/0035,080 Provision of frames or borders around opaque flakes for covert security applications 26 2005
* 7,608,330 High chroma optically variable color-shifting glitter comprising particles having interference structure coating 1 2006
8,343,615 Dynamic appearance-changing optical devices (DACOD) printed in a shaped magnetic field including printable fresnel structures 3 2006
* 2006/0198,998 DYNAMIC APPEARANCE-CHANGING OPTICAL DEVICES (DACOD) PRINTED IN A SHAPED MAGNETIC FIELD INCLUDING PRINTABLE FRESNEL STRUCTURES 34 2006
7,625,632 Alignable diffractive pigment flakes and method and apparatus for alignment and images formed therefrom 6 2006
* 2007/0139,744 Security Device With Metameric Features Using Diffractive Pigment Flakes 1 2006
7,934,451 Apparatus for orienting magnetic flakes 4 2007
* 2007/0172,261 Apparatus For Orienting Magnetic Flakes 7 2007
* 2007/0183,047 Optically Variable Security Devices 19 2007
* 2007/0195,392 Adhesive Chromagram And Method Of Forming Thereof 16 2007
8,118,963 Stamping a coating of cured field aligned special effect flakes and image formed thereby 0 2007
7,550,197 Non-toxic flakes for authentication of pharmaceutical articles 5 2007
* 2008/0019,924 Non-Toxic Flakes For Authentication Of Pharmaceutical Articles 0 2007
7,880,943 Patterned optical structures with enhanced security feature 2 2007
* 2010/0208,351 SELECTIVE AND ORIENTED ASSEMBLY OF PLATELET MATERIALS AND FUNCTIONAL ADDITIVES 1 2010
8,658,280 Taggent flakes for covert security applications having a selected shape 0 2011
8,726,806 Apparatus for orienting magnetic flakes 0 2012
8,999,616 Taggent flakes for covert security applications having a selected shape 0 2014
 
BASF AKTIENGESELLSCHAFT (2)
7,449,239 Coated metallic luster pigments for pigmenting high molecular weight materials 13 2004
* 2008/0249,224 USE OF COATED METALLIC LUSTER PIGMENTS FOR PIGMENTING HIGH MOLECULAR WEIGHT MATERIALS 2 2008
 
NELSON PRECISION CASTING CO., LTD. (1)
* 2005/0272,522 Coating for golf club head 8 2004
* Cited By Examiner