Patents Assigned to Nanophase Technologies Corporation
  • Patent number: 11672744
    Abstract: 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: Grant
    Filed: February 26, 2021
    Date of Patent: June 13, 2023
    Assignee: Nanophase Technologies Corporation
    Inventors: Harry W. Sarkas, Christopher C. Boffa
  • Patent number: 11499054
    Abstract: 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: Grant
    Filed: December 17, 2019
    Date of Patent: November 15, 2022
    Assignee: Nanophase Technologies Corporation
    Inventors: Harry W. Sarkas, Abigail R. Hooper, Nathan H. Hoffmann
  • Patent number: 11154501
    Abstract: 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: Grant
    Filed: August 9, 2019
    Date of Patent: October 26, 2021
    Assignee: Nanophase Technologies Corporation
    Inventor: Harry W. Sarkas
  • Patent number: 11155683
    Abstract: 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: Grant
    Filed: September 13, 2019
    Date of Patent: October 26, 2021
    Assignee: Nanophase Technologies Corporation
    Inventors: Harry W. Sarkas, Christopher C. Boffa, Kevin Cureton
  • Patent number: 10590278
    Abstract: 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: Grant
    Filed: April 10, 2017
    Date of Patent: March 17, 2020
    Assignee: Nanophase Technologies Corporation
    Inventors: Harry W. Sarkas, Abigail R. Hooper, Nathan H. Hoffmann
  • Patent number: 10555892
    Abstract: 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: Grant
    Filed: March 9, 2018
    Date of Patent: February 11, 2020
    Assignee: Nanophase Technologies Corporation
    Inventors: Harry W. Sarkas, Anna Pavlovic, Kevin Cureton, Harold G. Judd
  • Patent number: 10544316
    Abstract: 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: Grant
    Filed: April 19, 2017
    Date of Patent: January 28, 2020
    Assignee: Nanophase Technologies Corporation
    Inventors: Kushal D. Shah, Harry W. Sarkas, Patrick G. Murray
  • Patent number: 9657183
    Abstract: 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: Grant
    Filed: August 14, 2015
    Date of Patent: May 23, 2017
    Assignee: Nanophase Technologies Corporation
    Inventors: Kushal D. Shah, Harry W. Sarkas, Patrick G. Murray
  • Patent number: 9139737
    Abstract: 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: Grant
    Filed: November 21, 2011
    Date of Patent: September 22, 2015
    Assignee: Nanophase Technologies Corporation
    Inventors: Kushal D. Shah, Harry W. Sarkas, Patrick G. Murray
  • Patent number: 9105923
    Abstract: 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: Grant
    Filed: February 13, 2013
    Date of Patent: August 11, 2015
    Assignee: Nanophase Technologies Corporation
    Inventors: Harry W. Sarkas, Igor V. Barsukov
  • Publication number: 20140227592
    Abstract: 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: Application
    Filed: February 13, 2013
    Publication date: August 14, 2014
    Applicant: Nanophase Technologies Corporation
    Inventor: Nanophase Technologies Corporation
  • Patent number: 8383564
    Abstract: 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: Grant
    Filed: September 19, 2011
    Date of Patent: February 26, 2013
    Assignee: Nanophase Technologies Corporation
    Inventors: Abigail R. Farning, Harry W. Sarkas, Patrick G. Murray
  • Patent number: 8022025
    Abstract: 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: Grant
    Filed: January 27, 2010
    Date of Patent: September 20, 2011
    Assignee: Nanophase Technologies Corporation
    Inventors: Abigail R. Farning, Harry W. Sarkas, Patrick G. Murray
  • Patent number: 7517513
    Abstract: 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: Grant
    Filed: June 2, 2003
    Date of Patent: April 14, 2009
    Assignee: Nanophase Technologies Corporation
    Inventors: Harry W. Sarkas, Jonathan Piepenbrink
  • Publication number: 20080210902
    Abstract: 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: Application
    Filed: July 12, 2007
    Publication date: September 4, 2008
    Applicant: NANOPHASE TECHNOLOGIES CORPORATION
    Inventors: Dan Coy, Harry Sarkas, Robert Haines
  • Publication number: 20080057130
    Abstract: 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: Application
    Filed: October 24, 2007
    Publication date: March 6, 2008
    Applicant: NANOPHASE TECHNOLOGIES CORPORATION
    Inventor: Richard Brotzman
  • Publication number: 20080014357
    Abstract: 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: Application
    Filed: February 1, 2007
    Publication date: January 17, 2008
    Applicant: NANOPHASE TECHNOLOGIES CORPORATION
    Inventors: Roger Cayton, Murray Patrick, Petra Lenz, Klaus Schulte, Martin Grundkemeyer, Thomas Sawitowski
  • Publication number: 20080014343
    Abstract: 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: Application
    Filed: February 1, 2007
    Publication date: January 17, 2008
    Applicant: NANOPHASE TECHNOLOGIES CORPORATION
    Inventors: Roger Cayton, Murray Patrick, Petra Lenz, Klaus Schulte, Martin Grundkemeyer, Thomas Sawitowski
  • Patent number: 7303819
    Abstract: 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: Grant
    Filed: March 9, 2005
    Date of Patent: December 4, 2007
    Assignee: Nanophase Technologies Corporation
    Inventor: Richard W. Brotzman, Jr.
  • Patent number: 7166663
    Abstract: A material composition made of a matrix material, a nano-sized particulate fraction and a micron-sized particulate fraction. A process of making a nano-structured composition. A nano-structured material is provided to initiate a mixture. A micron-sized particulate material is added to the mixture. A matrix material is added to the mixture. Finally, the mixture is utilized to fabricate a nano-structured structure.
    Type: Grant
    Filed: November 4, 2002
    Date of Patent: January 23, 2007
    Assignee: Nanophase Technologies Corporation
    Inventors: Roger H. Cayton, Richard W. Brotzman, Jr.