Patents Assigned to Nanophase Technologies Corporation
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Patent number: 12083200Abstract: Zinc oxide particles are prepared as a dry powder through a vapor phase formed by a plasma process, or by introducing defects into stoichiometric zinc oxide particles in a liquid carrier through mechanical stress. The zinc oxide has an O:Zn ratio of at least 0.99, an average particle size of 10 to 300 nm, and a sufficient concentration of oxygen vacancies and zinc vacancies to give a dispersion of the particles in C12-C15 alkyl benzoate an orange to tan color corresponding to a ?E value of at least 15 in a Dispersion Color Test. The particles contain no aggregates and have no detectable particles 500 nm or larger, on a number-weighted basis.Type: GrantFiled: April 24, 2023Date of Patent: September 10, 2024Assignee: Nanophase Technologies CorporationInventors: Harry W. Sarkas, Christopher C. Boffa
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Patent number: 11672744Abstract: Zinc oxide particles are prepared as a dry powder through a vapor phase formed by a plasma process, or by introducing defects into stoichiometric zinc oxide particles in a liquid carrier through mechanical stress. The zinc oxide has an O:Zn ratio of at least 0.99, an average particle size of 10 to 300 nm, and a sufficient concentration of oxygen vacancies and zinc vacancies to give a dispersion of the particles in C12-C15 alkyl benzoate an orange to tan color corresponding to a ?E value of at least 15 in a Dispersion Color Test. The particles contain no aggregates and have no detectable particles 500 nm or larger, on a number-weighted basis.Type: GrantFiled: February 26, 2021Date of Patent: June 13, 2023Assignee: Nanophase Technologies CorporationInventors: Harry W. Sarkas, Christopher C. Boffa
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Patent number: 11499054Abstract: A coated powder comprises (a) particles, and (b) a coating on the surface of the particles including (1) silica moieties, (2) organo oxysilane moieties selected from the group consisting of mono-organo oxysilane moieties, bi-organo oxysilane moieties and tri-organo oxysilane moieties, and (3) poly(dialkyl)siloxane moieties. The amount by weight in SiO2 equivalents of the organo oxysilane moieties and the silica moieties is at least 0.0625% of the total coated powder weight per m2/g of the specific surface area of the particle to be coated.Type: GrantFiled: December 17, 2019Date of Patent: November 15, 2022Assignee: Nanophase Technologies CorporationInventors: Harry W. Sarkas, Abigail R. Hooper, Nathan H. Hoffmann
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Patent number: 11155683Abstract: A composition comprises phenolic polymer particles and a surfactant, on the phenolic polymer particles. The composition is lipophilic. A dispersion comprises the phenolic polymer particles, the surfactant, and a carrier vehicle. The carrier vehicle may be a cosmetically-acceptable fluid or a wax that is lipophilic.Type: GrantFiled: September 13, 2019Date of Patent: October 26, 2021Assignee: Nanophase Technologies CorporationInventors: Harry W. Sarkas, Christopher C. Boffa, Kevin Cureton
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Patent number: 11154501Abstract: A composition comprises a low-solubility ingredient having a particle size of at most 10 ?m dispersed in a solvent. The ingredient is present in an amount greater than the saturation limit of the ingredient in the solvent. The composition passes the freeze-thaw cycling test.Type: GrantFiled: August 9, 2019Date of Patent: October 26, 2021Assignee: Nanophase Technologies CorporationInventor: Harry W. Sarkas
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Patent number: 10590278Abstract: A coated powder comprises (a) particles, and (b) a coating on the surface of the particles including (1) silica moieties, (2) organo oxysilane moieties selected from the group consisting of mono-organo oxysilane moieties, bi-organo oxysilane moieties and tri-organo oxysilane moieties, and (3) poly(dialkyl)siloxane moieties. The amount by weight in SiO2 equivalents of the organo oxysilane moieties and the silica moieties is at least 0.0625% of the total coated powder weight per m2/g of the specific surface area of the particle to be coated.Type: GrantFiled: April 10, 2017Date of Patent: March 17, 2020Assignee: Nanophase Technologies CorporationInventors: Harry W. Sarkas, Abigail R. Hooper, Nathan H. Hoffmann
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Patent number: 10555892Abstract: A coated powder comprises (a) particles, and (b) a coating, on the surface of the particles. The surface coating comprises (1) optionally silica moieties, (2) organo oxysilane moieties selected from the group consisting of mono-organo oxysilane moieties, bi-organo oxysilane moieties and tri-organo oxysilane moieties, and (3) optionally organo-substituted polysiloxane moieties. The organo oxysilane moieties each have the formula R?nSiO4-n, with n=1, 2 or 3, and each R? group is independently selected from the group consisting of alkyl, alkenyl, alkynyl, esters, amides, and at least one aromatic moiety having an absorption band maximum in the region of 280 nm to 780 nm.Type: GrantFiled: March 9, 2018Date of Patent: February 11, 2020Assignee: Nanophase Technologies CorporationInventors: Harry W. Sarkas, Anna Pavlovic, Kevin Cureton, Harold G. Judd
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Patent number: 10544316Abstract: A coated powder comprises (a) nanoparticles, and (b) a coating, on the surface of the nanoparticles. The coating comprises (1) silica moieties, (2) organo oxysilane moieties selected from the group consisting of mono-organo oxysilane moieties, bi-organo oxysilane moieties and tri-organo oxysilane moieties, and (3) poly(dialkyl)siloxane moieties.Type: GrantFiled: April 19, 2017Date of Patent: January 28, 2020Assignee: Nanophase Technologies CorporationInventors: Kushal D. Shah, Harry W. Sarkas, Patrick G. Murray
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Patent number: 9657183Abstract: A coated powder comprises (a) nanoparticles, and (b) a coating, on the surface of the nanoparticles. The coating comprises (1) silica moieties, (2) organo oxysilane moieties selected from the group consisting of mono-organo oxysilane moieties, bi-organo oxysilane moieties and tri-organo oxysilane moieties, and (3) poly(dialkyl)siloxane moieties.Type: GrantFiled: August 14, 2015Date of Patent: May 23, 2017Assignee: Nanophase Technologies CorporationInventors: Kushal D. Shah, Harry W. Sarkas, Patrick G. Murray
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Patent number: 9139737Abstract: A coated powder comprises (a) nanoparticles, and (b) a coating, on the surface of the nanoparticles. The coating comprises (1) silica moieties, (2) organo oxysilane moieties selected from the group consisting of mono-organo oxysilane moieties, bi-organo oxysilane moieties and tri-organo oxysilane moieties, and (3) poly(dialkyl)siloxane moieties.Type: GrantFiled: November 21, 2011Date of Patent: September 22, 2015Assignee: Nanophase Technologies CorporationInventors: Kushal D. Shah, Harry W. Sarkas, Patrick G. Murray
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Patent number: 9105923Abstract: A negative electrode active material for a zinc anode alkaline electrochemical cell includes (i) particles, comprising bismuth, and (ii) powder, comprising zinc. The particles have an average particle size of at most 135 nm.Type: GrantFiled: February 13, 2013Date of Patent: August 11, 2015Assignee: Nanophase Technologies CorporationInventors: Harry W. Sarkas, Igor V. Barsukov
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Publication number: 20140227592Abstract: A negative electrode active material for a zinc anode alkaline electrochemical cell includes (i) particles, comprising bismuth, and (ii) powder, comprising zinc. The particles have an average particle size of at most 135 nm.Type: ApplicationFiled: February 13, 2013Publication date: August 14, 2014Applicant: Nanophase Technologies CorporationInventor: Nanophase Technologies Corporation
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Patent number: 8383564Abstract: A heterocoagulate comprises first particles, having a particle size of at most 999 nm, on a second particle, having a particle size of at least 3 microns. The first particles comprise cerium oxide, and second particle comprises at least one member selected from the group consisting of silicon oxides, aluminum oxides and zirconium oxides.Type: GrantFiled: September 19, 2011Date of Patent: February 26, 2013Assignee: Nanophase Technologies CorporationInventors: Abigail R. Farning, Harry W. Sarkas, Patrick G. Murray
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Patent number: 8022025Abstract: A heterocoagulate comprises first particles, having a particle size of at most 999 nm, on a second particle, having a particle size of at least 3 microns. The first particles comprise cerium oxide, and second particle comprises at least one member selected from the group consisting of silicon oxides, aluminum oxides and zirconium oxides.Type: GrantFiled: January 27, 2010Date of Patent: September 20, 2011Assignee: Nanophase Technologies CorporationInventors: Abigail R. Farning, Harry W. Sarkas, Patrick G. Murray
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Patent number: 7517513Abstract: A process to prepare stoichiometric-nanostructured materials comprising generating a plasma, forming an “active volume” through introduction of an oxidizing gas into the plasma, before the plasma is expanded into a field-free zone, either (1) in a region in close proximity to a zone of charge carrier generation, or (2) in a region of current conduction between field generating elements, including the surface of the field generation elements, and transferring energy from the plasma to a precursor material to form in the “active volume” at least one stoichiometric-nanostructured material and a vapor that may be condensed to form a stoichiometric-nanostructured material. The surface chemistry of the resulting nanostructured materials is substantially enhanced to yield dispersion stable materials with large zeta-potentials.Type: GrantFiled: June 2, 2003Date of Patent: April 14, 2009Assignee: Nanophase Technologies CorporationInventors: Harry W. Sarkas, Jonathan Piepenbrink
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Publication number: 20080210902Abstract: Lattice doped stoichiometric-nanostructured materials having a plurality of discrete nanocrystalline particles, which are at least 95% crystalline, and a dopant either substituted in at least one nanocrystalline particle crystal lattice or interstitially located between crystal lattices or crystal planes of the nanocrystalline particles.Type: ApplicationFiled: July 12, 2007Publication date: September 4, 2008Applicant: NANOPHASE TECHNOLOGIES CORPORATIONInventors: Dan Coy, Harry Sarkas, Robert Haines
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Publication number: 20080057130Abstract: A surface treated particle having a plurality of inorganic, metallic, semi-metallic, and/or metallic oxide particles and a star-graft copolymer with looped and/or linear polymeric structure on a star-graft copolymer, obtainable by a heterogeneous polymerization reaction in the particle surface proximity, encapsulating at least a portion of said particles and a method for making the same are provided. The surface treatment may include: Si (w, x, y, z), where: w, x, y, and z are mole percent tetrafunctional, trifunctional, difunctional, and monofunctional monomeric units, respectively. Product(s) per se, defined as surface treated ZnO and/or TiO2, and the use of the product(s) per se in personal care formulations are excluded.Type: ApplicationFiled: October 24, 2007Publication date: March 6, 2008Applicant: NANOPHASE TECHNOLOGIES CORPORATIONInventor: Richard Brotzman
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Publication number: 20080014357Abstract: A film forming composition comprises a resin, a plurality of nanoparticles, a surface active material and a polymeric dispersant. The film forming composition is substantially transparent and is adapted to be combined with a substrate to enhance abrasion resistance. The film forming composition may be used with wood objects including furniture, doors, floors, for architectural surfaces, for automotive articles and finishes, for metal coatings and coil coatings, for plastic articles, and for wipe-on protective treatments.Type: ApplicationFiled: February 1, 2007Publication date: January 17, 2008Applicant: NANOPHASE TECHNOLOGIES CORPORATIONInventors: Roger Cayton, Murray Patrick, Petra Lenz, Klaus Schulte, Martin Grundkemeyer, Thomas Sawitowski
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Publication number: 20080014343Abstract: A film forming composition comprises a resin, a plurality of nanoparticles, a surface active material and a polymeric dispersant. The film forming composition is substantially transparent and is adapted to be combined with a substrate to enhance abrasion resistance. The film forming composition may be used with wood objects including furniture, doors, floors, for architectural surfaces, for automotive articles and finishes, for metal coatings and coil coatings, for plastic articles, and for wipe-on protective treatments.Type: ApplicationFiled: February 1, 2007Publication date: January 17, 2008Applicant: NANOPHASE TECHNOLOGIES CORPORATIONInventors: Roger Cayton, Murray Patrick, Petra Lenz, Klaus Schulte, Martin Grundkemeyer, Thomas Sawitowski
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Patent number: 7303819Abstract: A surface treated particle comprising a plurality of inorganic, metallic, semi-metallic, and/or metallic oxide particles and a star-graft copolymer with looped and/or linear polymeric structure on a star-graft copolymer, obtainable by a heterogeneous polymerization reaction in the particle surface proximity, encapsulating at least a portion of said particles and a method for making the same. The surface treatment comprises: Si (w, x, y, z), where: w, x, y, and z are mole percent tetrafunctional, trifunctional, difunctional, and monofunctional monomeric units, respectively. Product(s) per se, defined as surface treated ZnO and/or TiO2, and the use of the product(s) per se in personal care formulations are excluded.Type: GrantFiled: March 9, 2005Date of Patent: December 4, 2007Assignee: Nanophase Technologies CorporationInventor: Richard W. Brotzman, Jr.