Patents Assigned to The Mearl Corporation
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Patent number: 5837359Abstract: This invention provides a thermoplastic multilayer resinous film in which two or more resinous materials form a plurality of very thin layers of substantially uniform thickness, the layers being substantially parallel, the contiguous adjacent layers being of different transparent thermoplastic resinous materials differing in refractive index, each of the outermost skin layers being at least 5% of the total thickness of the film and the multilayer film containing a sufficient quantity of a pearlescent pigment in at least one of the interior layers to render it non-glossy.Type: GrantFiled: June 3, 1996Date of Patent: November 17, 1998Assignee: The Mearl CorporationInventors: Ramakrishna S. Shetty, Scott A. Cooper
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Patent number: 5753371Abstract: A pearlescent pigment consists essentially of C glass flakes having a layer comprising rutile titanium dioxide or iron oxide thereon. A hydrous layer of the rutile forming titanium dioxide or iron oxide is formed on the glass flakes and the resulting coated flakes are calcined.Type: GrantFiled: June 3, 1996Date of Patent: May 19, 1998Assignee: The Mearl CorporationInventors: William J. Sullivan, Patricia Elliot, Dana Fleming
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Patent number: 5611851Abstract: A nacreous pigment is prepared by subjecting a metal oxide-coated mica nacreous pigment to an acid extractive dissolution using a combination of a mineral acid and phosphoric acid followed by an extractive dissolution using an alkali.Type: GrantFiled: December 13, 1995Date of Patent: March 18, 1997Assignee: The Mearl CorporationInventors: Carmine DeLuca, William P. Kurtenbach
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Patent number: 5451449Abstract: Disclosed is a transparent thermoplastic resinous film of at least 10 generally parallel layers in which the contiguous adjacent layers are of diverse transparent thermoplastic resinous material differing in refractive index by at least about 0.03, the film containing a sufficient quantity of a transparent dye which is soluble in the thermoplastic resinous material of the layers in which it is located to enhance or modify the apparent color of at least one of the reflection and transmission colors of the film.Type: GrantFiled: May 11, 1994Date of Patent: September 19, 1995Assignee: The Mearl CorporationInventors: Ramakrishna S. Shetty, Scott A. Cooper
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Patent number: 5433779Abstract: A pearlescent pigment comprising micaceous particles having an adherent layer of rutile titanium dioxide thereon is prepared by effecting the deposition of hydrous titanium dioxide on the micaceous particles in the presence of iron and calcium, magnesium and/or zinc ions without the use of tin.Type: GrantFiled: November 7, 1994Date of Patent: July 18, 1995Assignee: The Mearl CorporationInventor: Carmine V. DeLuca, Jr.
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Patent number: 5423912Abstract: A titanium dioxide- or iron oxide-coated mica pearlescent pigment having a coating which contains a combination of hydrated cerium and aluminum oxides has enhanced weatherstability.Type: GrantFiled: October 21, 1993Date of Patent: June 13, 1995Assignee: The Mearl CorporationInventors: William J. Sullivan, Deborah Cacace
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Patent number: 5376698Abstract: Antioxidant containing polyolefin compositions are provided including titanium dioxide-coated mica particles comprising a coating of silica and alumina calcined thereon to prevent yellowing of the compositions. Process for preventing the yellowing of antioxidant containing polyolefin compositions is also disclosed.Type: GrantFiled: September 21, 1993Date of Patent: December 27, 1994Assignee: The Mearl CorporationInventors: Ioannis P. Sipsas, Brian Mullaney, Leigh A. Kelderhouse
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Patent number: 5326392Abstract: Platy pigments with good tactile characteristics are obtained by treating such pigments with a compound of the general formula: ##STR1## where m is an even number from 8 to 18 and n is 3 or 4 under defined conditions. N.epsilon.-lauroyl lysine is preferred. The pigments are especially useful in cosmetic compositions such as eye shadow.Type: GrantFiled: July 20, 1993Date of Patent: July 5, 1994Assignee: The Mearl CorporationInventors: Harold A. Miller, Philip Greenberg, Adolph Blum, Wasi Ahmed
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Patent number: 5273576Abstract: Iron oxide-coated micaceous pigments having a chroma enhancing amount of a coating of a colorless metal oxide which has a refractive index of at least about 2.0 exhibit intensely colored effects.Type: GrantFiled: October 19, 1992Date of Patent: December 28, 1993Assignee: Mearl CorporationInventors: William J. Sullivan, Thomas J. Birch
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Patent number: 5246614Abstract: Soap bars are prepared by mixing a soap base with a metal oxide coated mica pearlescent pigment, that is strongly colored, or alternately with the colorant added separately to the soap base, so that the soap bars are brightly colored.Type: GrantFiled: August 14, 1991Date of Patent: September 21, 1993Assignee: The MEARL CorporationInventors: Erika M. Baumgartner, Philip Greenberg, Harold A. Miller
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Patent number: 5242614Abstract: A soap bar having the appearance of a polished wood grain is prepared by mixing the soap formulation with an iron oxide coated micaceous pearlescent pigment and extruding the combination such that the iron oxide coated micaceous pearlescent pigment is oriented generally unidirectionally.Type: GrantFiled: August 17, 1992Date of Patent: September 7, 1993Assignee: The Mearl CorporationInventors: Erika M. Baumgartner, Philip Greenberg, Harold A. Miller
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Patent number: 5196131Abstract: A soap bar having the appearance of a polished wood grain is prepared by mixing the soap formulation with an iron oxide coated micaceous pearlescent pigment and extruding the combination such that the iron oxide coated micaceous pearlescent pigment is oriented generally unidirectionally.Type: GrantFiled: November 26, 1990Date of Patent: March 23, 1993Assignee: The Mearl CorporationInventors: Erika M. Baumgartner, Philip Greenberg, Harold A. Miller
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Patent number: 5156889Abstract: Metal oxide coated mica pigments are provided with enhanced light and moisture stability by providing on the particle surfaces of coating of hydrous aluminum oxide.Type: GrantFiled: December 11, 1991Date of Patent: October 20, 1992Assignee: The Mearl CorporationInventor: Carmine V. DeLuca, Jr.
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Patent number: 5154765Abstract: An article exhibiting a multicolor effect is obtained by combining a transparent substrate, an interference pigment and an absorption colorant, the pigment and colorant preferably united in the form of a combination pigment, in which the absorption colorant is of a color which is different from the transmission color of the interference pigment or the complement thereof.Type: GrantFiled: December 11, 1990Date of Patent: October 13, 1992Assignee: The Mearl CorporationInventor: Louis Armanini
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Patent number: 5149369Abstract: Bismuth oxychloride nacreous pigment coated with a rare earth metal compound is described. The coated pigment is prepared by adding a rare earth metal salt solution to a suspension of bismuth oxychloride pigment crystals to form a further suspension containing the pigment crystals and cerium hydroxide. The cerium hydroxide is then precipitated out of the further suspension to coat the pigment crystals. The coated pigment is endowed with improved weather fastness.Type: GrantFiled: January 6, 1992Date of Patent: September 22, 1992Assignee: Mearl CorporationInventors: Robert E. Eberts, Robert M. Juby, II, Michael T. Venturini, II
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Patent number: 5091011Abstract: Metal oxide coated mica pigments are provided with enhanced light and moisture stability by providing on the particle surfaces a coating of hydrous aluminum oxide.Type: GrantFiled: March 12, 1990Date of Patent: February 25, 1992Assignee: The Mearl CorporationInventor: Carmine V. DeLuca, Jr.
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Patent number: 5089318Abstract: Improvements in multilayer light reflecting film are effected by the use of a thermoplastic elastomer resin in a system in which two or more resinous materials form a plurality of the layers.Type: GrantFiled: October 31, 1989Date of Patent: February 18, 1992Assignee: The Mearl CorporationInventors: Ramakrishna S. Shetty, Scott A. Cooper
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Patent number: 5008143Abstract: An article exhibiting a multicolor effect is obtained by combining a transparent substrate, an interference pigment and an absorption colorant, the pigment and colorant preferably united in the form of a combination pigment, in which the absorption colorant is of a color which is different from the transmission color of the interference pigment or the complement thereof.Type: GrantFiled: December 7, 1989Date of Patent: April 16, 1991Assignee: The Mearl CorporationInventor: Louis Armanini
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Patent number: 4968351Abstract: Non-bleeding, non-agglomerated, lustrous colored nacreous pigments are prepared by admixing a laking reagent with an aqueous dispersion of a metal oxide coated substrate nacreous pigment and dyestuff.Type: GrantFiled: November 2, 1988Date of Patent: November 6, 1990Assignee: The Mearl CorporationInventors: Wasi Ahmed, Louis Armanini
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Patent number: 4797308Abstract: An iridescent lustrous composite which can simulate the appearance of mother-of-pearl comprises a substrate comprising a transparent or translucent plastic which has been pigmented with a metal oxide coated mica pigment and the substrate carries on at least one of its surfaces a transparent thermoplastic resinous laminate film of at least ten very thin and generally parallel layers of transparent thermoplastic resinous materials, the contiguous layers differing in refractive index by at least about 0.03 and in which the layer at each external surface of the laminate film has a thickness which is greater than the thickness of any one of the multiple very thin layers.Type: GrantFiled: July 6, 1987Date of Patent: January 10, 1989Assignee: The Mearl CorporationInventor: Harry E. Mattin