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| Number | Title | Issue Date |
| 7442227 | Tightly agglomerated non-oxide particles and method for producing the same A non-oxide powder of which at least about 40% by mass is comprised of a plurality of tightly agglomerated compositions, each of the tightly agglomerated compositions comprising a plurality of primary particles agglomerated together. Suitable materials for the prima... | 10/28/2008 |
| 7422730 | Nanoporous ultrafine α-alumina powders and sol-gel process of preparing same The present invention provides α-alumina powders comprising α-alumina particles of which at least 80% of the α-alumina particles have a particle size of less than 100 nm. The invention also provides slurries, particularly aqueous slurries, which comprise α-alumi... | 09/09/2008 |
| 7405002 | Coated water-soluble nanoparticles comprising semiconductor core and silica coating Nanoparticles and methods of making nanoparticles are provided. The nanoparticles may include semiconductor nanocrystals. A shell may encapsulate a nanoparticle core, and the shell may include non-organic material and may be silica. The shell may also include additi... | 07/29/2008 |
| 7396589 | Core-shell magnetic nanoparticles comprising an inner-transition element Magnetic nanoparticles are applicable in imaging, diagnosis, therapy, and biomaterial separation. The magnetic nanoparticles comprise a core represented as FexMavZy and a shell of an inner-transition element Mb ... | 07/08/2008 |
| 7393516 | Preparation of metal chalcogenides from reactions of metal compounds and chalcogen A method of preparing metal chalcogenides from elemental metal or metal compounds has the following steps: providing at least one elemental metal or metal compound; providing at least one element from periodic table groups 13-15; providing at least one chalcogen; an... | 07/01/2008 |
| 7390568 | Semiconductor nanocrystal heterostructures having specific charge carrier confinement A semiconductor nanocrystal heterostructure has a core of a first semiconductor material surrounded by an overcoating of a second semiconductor material. Upon excitation, one carrier can be substantially confined to the core and the other carrier can be substantiall... | 06/24/2008 |
| 7381239 | Alloy nano-particles Disclosed are alloy nano-particles having a fluctuation coefficient of particle size of 20% or less and a fluctuation coefficient of composition of 20% or less. The alloy nano-particles have a low transformation point and hardly aggregate and which can form a flat m... | 06/03/2008 |
| 7381465 | Core-shell structure having controlled cavity inside and structure comprising the core-shell structure as component, and method for preparation thereof A core-shell structure comprises a core (2) comprising nanoparticles and a shell (4) coating the core (2), and its void space (3) formed by the core (2) and the shell (4) is controlled. A method of preparing the core-shell s... | 06/03/2008 |
| 7381240 | Platinum particles with varying morphology Nanometer to micrometer sized particles containing platinum and having selected morphologies are prepared by a sonochemical process. A compound of platinum is dissolved, suspended, or diluted in a suitable liquid medium at a predetermined concentration and the liqui... | 06/03/2008 |
| 7374597 | Synthesis of metal nanoparticle compositions from metallic and ethynyl compounds A process of making metal nanoparticles comprising the steps of: providing a precursor composition comprising at least one metallic compound and at least one organic compound; wherein the organic compound is selected from the group consisting of an ethynyl compound,... | 05/20/2008 |
| 7374824 | Core-shell nanocrystallite comprising tellurium-containing nanocrystalline core and semiconductor shell Tellurium-containing nanocrystallites are produced by injection of a precursor into a hot coordinating solvent, followed by controlled growth and annealing. Nanocrystallites may include CdTe, ZnTe, MgTe, HgTe, or alloys thereof. The nanocrystallites can photolumines... | 05/20/2008 |
| 7371457 | Nanoparticle comprising nanoshell of thickness less than the bulk electron mean free path of the shell material The present invention is for particulate compositions and methods for producing them that can absorb or scatter electromagnetic radiation. The particles are homogeneous in size and are comprised of a nonconducting inner layer that is surrounded by an electrically co... | 05/13/2008 |
| 7361410 | External modification of composite organic inorganic nanoclusters comprising raman active organic compound Modified and functionalized metallic nanoclusters capable of providing an enhanced Raman signal from an organic Raman-active molecule incorporated therein are provided. For example, modifications include coatings and layers, such as adsorption layers, metal coatings... | 04/22/2008 |
| 7347885 | Synthesis of metal nanoparticle compositions from metallic and ethynyl compounds A process of making metal nanoparticles comprising the steps of: providing a precursor composition comprising at least one metallic compound and at least one organic compound; wherein the organic compound is selected from the group consisting of an ethynyl compound,... | 03/25/2008 |
| 7268269 | Multi-functional protective textiles and methods for decontamination A reactive and adsorptive (i.e., multi-functional protective) textile and methods for constructing and using same which possess at least chemically reactive and biocidal properties. Nanoparticles from different classes such as metal oxides, metal hydroxides, metal h... | 09/11/2007 |
| 7241814 | Preparation of metallic nanoparticles with shell-crosslinked micelle as mold A method for the preparation of a dispersion of fine particles characterized in that the micelles are ones which have been formed in a aqueous medium with an amphiphilic block copolymer represented by the general formula PB and in which the shell of each micelle has... | 07/10/2007 |
| 7238331 | Process for producing nano-powders and powders of nano-particle loose aggregate The present invention discloses a process for producing nano-powders and powders of nano-particle loose aggregate, which includes: (a) providing at least two reactant solutions A and B capable of rapidly reacting to form deposits; (b) supplying the at least two reac... | 07/03/2007 |
| 7232474 | Process for producing gold nanoparticles Gold nanoparticles having a particle size of 4-15 nM are synthesized by the reduction of hydrogen tetrachloroaurate (III) trihydrate using a suitable reducing agent such as sodium citrate in the presence of unmodified α, β or γ-cyclodextrin. The particle size is ... | 06/19/2007 |
| 7229602 | Method of preparing metal chalcogenide particles A method of preparing metal chalcogenide particles. The method comprising the step of reacting an amine and metal complex precursors. The metal complex precursors comprising a chalcogenide and an electrophilic group. The reaction forming metal chalcogenide particles... | 06/12/2007 |
| 7229600 | Nanoparticles of rare earth oxides Rare earth compositions comprising nanoparticles, methods of making nanoparticles, and methods of using nanoparticles are described. The compositions of the nanomaterials discussed may include scandium (Sc), yttrium (Y), lanthanum (La), cerium (Ce), praseodymium (Pr... | 06/12/2007 |
| 7217407 | Plasma synthesis of metal oxide nanoparticles The present invention is a method of increasing particle surface area and decreasing the concentration of over-sized particles in a process for making metal oxide particles, particularly nanoparticle TiO2, in an inlet-fed, plug flow, plasma reactor by vap... | 05/15/2007 |
| 7211230 | Process for producing nanometer grade powders The present invention discloses a process for producing nanometer powders, comprising the following steps: (a) providing reactant solution A and reactant solution B that can rapidly react to form precipitate; (b) continuously adding said solution A and solution B in... | 05/01/2007 |
| 7208126 | Titanium dioxide nanopowder manufacturing process Titanium dioxide nanopowder is produced by a process, comprising: (a) reacting titanium tetrachloride and an oxygen containing gas in the vapor phase in a flame reactor, at a flame temperature of at least about 800° C. in the pres... | 04/24/2007 |
| 7195721 | Quantum lilypads and amplifiers and methods of use A nanocomposite having enhanced energy conversion between thermal, electron, phonons, and photons energy states. The composition comprises a synergistic blend of nanoscale powders wherein the powders have nanoscale layered surface modifiers and a conductive medium. ... | 03/27/2007 |
| 7189279 | Cross-linked polymeric nanoparticles and metal nanoparticles derived therefrom There are provided internally cross-linked, stable polymeric materials, in the form of substantially spherical particles, each particle consisting essentially of a single macromolecule. They have the unusual property of being soluble or dispersible in a liquid mediu... | 03/13/2007 |
| 7182801 | Non-magnetic nickel powders and method for preparing the same Provided are non-magnetic nickel powders and a method for preparing the same. The nickel powders have non-magnetic property and a HCP crystal structure. The method include (a) dispersing nickel powders with a FCC crystal structure in an organic solvent to prepare a ... | 02/27/2007 |
| 7182929 | Nanostructured multi-component and doped oxide powders and method of making same A method for producing nanostructured multi-component or doped oxide particles and the particles produced therein. The process includes the steps of (i) dissolving salts of cations, which are either dopants or components of the final oxide, in an organic solvent; (i... | 02/27/2007 |
| 7169375 | Metal oxide nanoparticles, methods of making, and methods of use Disclosed is a method of preparing treated metal oxide nanoparticles from sols prepared from metal alkoxides and organosilanes. The treated nanoparticles are useful high refractive index additives in the manufacture of optical articles. ... | 01/30/2007 |
| 7135161 | Method of producing nanosized oxide powders A method of forming metal oxide powders includes the steps of solid state mixing of at least one metal nitrate salt, such as Fe(NO3)3 or a combination of metal nitrate salts such as Zn(NO3)3,6H2O and Ga(NO3... | 11/14/2006 |
| 7122168 | Shape anisotropic metal oxide nanoparticles and synthetic method thereof In a metal oxide nanoparticle and a synthetic method thereof, and in particular to maghemite (γ-Fe2O3) nanoparticles usable as a superhigh density magnetic recording substance by having good shape anisotropy and magnetic characteristics, hemat... | 10/17/2006 |
| 7118727 | Method of making oxide particles The present invention provides a process for producing particles, such as oxide nanoparticles, in a substantially water-free environment. The process involves mixing at least one metal compound of the formula MX(m−n) with at least one surfactant and at ... | 10/10/2006 |
| 6679938 | Method of producing metal particles by spray pyrolysis using a co-solvent and apparatus therefor A spray pyrolysis method for producing pure metal and/or metal oxide particles uses a mixture of a carrier gas and a solution of a metal salt precursor, water and a co-solvent reducing agent. The metal salt precursors preferably comprise metals from the g... | 01/20/2004 |
| 6673953 | Polymeric and carbon compositions with metal nanoparticles The invention comprises a chemical composition with the structure shown below. The composition can be polymerized or pyrolyzed, forming transition metal nanoparticles homogeneously dispersed in a thermoset or carbon composition. The size of the nanopartic... | 01/06/2004 |
| 6670301 | Carbon monoxide tolerant electrocatalyst with low platinum loading and a process for its preparation An electrocatalyst is provided for use in a fuel cell that has low platinum loading and a high tolerance to carbon monoxide poisoning. The fuel cell anode includes an electrocatalyst that has a conductive support material, ruthenium nanoparticles reduced ... | 12/30/2003 |
| 6657888 | Application of high spin polarization materials in two terminal non-volatile bistable memory devices Disclosed are two terminal bistable memory cells having least two high-spin polarization magnetic material junctions which are separated from one another by electron trap site defect containing insulator. The two terminal bistable memory cells demonstrate... | 12/02/2003 |
| 6652363 | Method and apparatus for uniformly planarizing a microelectronic substrate A method and apparatus for planarizing a microelectronic substrate. The apparatus can include a planarizing medium having a relatively hard polishing pad and a planarizing liquid disposed on a generally non-porous planarizing surface of the polishing pad.... | 11/25/2003 |
| 6645444 | Metal nanocrystals and synthesis thereof A process for forming metal nanocrystals involves complexing a metal ion and an organic ligand in a solvent and introducing a reducing agent to reduce a plurality of metal ions to form the metal nanocrystals associated with the organic ligand. The nanocry... | 11/11/2003 |
| 6645464 | Loading metal particles into cell membrane vesicles and metal particular use for imaging and therapy Delivery of metal particles to living tissue, then applying external energy that interacts with the metal particles, is found to selectively increase the energy deposition and interaction surrounding the metal particles. The method is useful to improve tr... | 11/11/2003 |
| 6640795 | Dresser, polishing apparatus and method for producing an article A polishing apparatus comprise a lower surface plate rotatably provided and having a polishing surface for polishing an object, and an upper surface plate for pressing the object against the lower surface plate, wherein the polishing surface can be dresse... | 11/04/2003 |
| 6632897 | Use of nano-scaled metal oxide particles as polymerization catalysts Described is the use of nanoscale metal oxide particles as catalysts for the thermal and/or photochemical polymerization of species having at least one polymerizable carbon-carbon multiple bond and/or at least one carbon containing ring capable of undergo... | 10/14/2003 |
