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...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 8182574 | Metal fine particles, composition containing the same, and production method for producing metal fine particles The present invention provides metal fine particles which have selective wavelength absorption characteristics in a wavelength region from visible light to near infrared light, and have sharp absorption characteristics, and influences little the surrounding waveleng... | 05/22/2012 |
| 8157886 | Bulk synthesis of nanoporous palladium and platinum powders Disclosed is a method for providing nanoporous palladium and platinum powders. These materials were synthesized on milligram to gram scales by chemical reduction of tetrahalo-complexes with ascorbate in a concentrated aqueous surfactant at temperatures between −20... | 04/17/2012 |
| 8052773 | Manufacturing method of metal nanowire An object of this invention is to provide a manufacturing method of metal nanowire in which a length and a diameter can be uniformly controlled, metal nanowire having excellent form uniformity, and a transparent electric conductor exhibiting excellent conductivity a... | 11/08/2011 |
| 8048192 | Method of manufacturing nanoparticles Provided are methods and systems for generating nanoparticles from an inorganic precursor compound using a hydrothermal process within at least one CSTR or PFR maintained at an elevated temperature and an elevated pressure and a treatment vessel in which this reacti... | 11/01/2011 |
| 8048193 | Method for producing gold colloid and gold colloid It is an object of the present invention to provide a method for producing gold colloid having a targeted particle size, a sharp particle size distribution and a uniform and perfect spherical shape. The present invention relates to a method for producing gold colloi... | 11/01/2011 |
| 7931730 | Method for manufacturing metal nanoparticles The present invention provides a method for manufacturing metal nanoparticles, comprising: dissociating at least one metal precursor selected from the group consisting of silver, gold and palladium; reducing the dissociated metal precursor; and isolating the capped ... | 04/26/2011 |
| 7922787 | Methods for the production of silver nanowires Embodiments of the present invention are directed to novel methods for the solution-based production of silver nanowires by adaptation of the polyol process. Some embodiments of the present invention can be practiced at lower temperature and/or at higher concentrati... | 04/12/2011 |
| 7892317 | Preparation of colloidal nanosilver In present invention, colloidal nanosilver has been prepared with high affect on bacteria, viruses, and fungi. The average size of nano particles are less than 10 nm. In the present invention colloidal nanosilver is subject to synthesis by a very simple method and i... | 02/22/2011 |
| 7824467 | Method of making metal nanoprisms having a predetermined thickness A method of preparing metal nanoprisms having a unimodal size distribution and a predetermined thickness. The present method also allows control over nanoprism edge length. ... | 11/02/2010 |
| 7789935 | Photochemical synthesis of metallic nanoparticles for ink applications A method of forming an ink, including photochemically producing stabilized metallic nanoparticles and formulating the nanoparticles into an ink. ... | 09/07/2010 |
| 7749300 | Photochemical synthesis of bimetallic core-shell nanoparticles A method of forming bimetallic core-shell metal nanoparticles including a core of a first metal material and a shell of a second metal material, the method including photochemically producing metallic nanoparticle cores of the first metal material, and forming a she... | 07/06/2010 |
| 7648557 | Process for making highly dispersible spherical silver powder particles and silver particles formed therefrom Disclosed is an improved process for making highly dispersible, spherical silver particles. In particular, the invention is directed to a process for making silver particles, which are very high solids and highly ordered. The silver particles formed are particularly... | 01/19/2010 |
| 7591872 | Method for producing silver nanoparticles and conductive ink A method of producing metal nanoparticles in a high yield rate and uniform shape and size, which is thus suitable for mass production. In addition, metal nanoparticles are provided that have superior dispersion stability when re-dispersed in various organic solvents... | 09/22/2009 |
| 7585349 | Methods of nanostructure formation and shape selection Methods for forming nanostructures of various shapes are disclosed. Nanocubes, nanowires, nanopyramids and multiply twinned particles of silver may by formed by combining a solution of silver nitrate in ethylene glycol with a solution of poly(vinyl pyrrolidone) in e... | 09/08/2009 |
| 7527668 | Method for manufacturing metal fine particles, metal fine particles manufactured thereby, and composition, light absorbing material and applied products containing the same This method for manufacturing metal fine particles includes using an aqueous solution containing an amine having a reducing capacity and an ammonium salt having substantially no reducing capacity so as to reduce metal ions with said amine in a presence of said ammon... | 05/05/2009 |
| 7455714 | Powder of fine alloy particles having an uneven surface and method of manufacturing the powder The invention provides a powder of fine particles of an alloy of platinum-family metal having a surface with a large amount of unevenness that is suitable as a catalyst metal. It is a powder of an alloy containing T and M in a composition ratio represented by the fo... | 11/25/2008 |
| 7407527 | Synthesis of mono-disperse and highly crystalline nano-particles of metals, alloys, metal-oxides, and multi-metallic oxides without a size-selection process A synthetic method of fabricating highly crystalline and monodisperse nanoparticles of metals, multi-metallic alloys, monometallic oxides and multi-metallic oxides without a size selection process are disclosed. A typical synthetic method comprises the steps of, syn... | 08/05/2008 |
| 7335245 | Metal and alloy nanoparticles and synthesis methods thereof The present teachings are directed toward single metal and alloy nanoparticles and synthesis methods for preparing single metal and alloy nanoparticles. ... | 02/26/2008 |
| 7329301 | Silver nanoparticles made in solvent This invention relates to a composition of matter comprising associated predominantly silver nanoparticles, and a method of making the nanoparticles. It further relates to articles comprising the nanoparticles. ... | 02/12/2008 |
| 7297179 | Method of producing metal particles, and metal oxide obtained from the particles A method of producing (1) metal particles or (2) metal fine-particles, which contains: jetting out two solutions of (1) a metal salt solution and a reducing agent solution, or (2) a metal ion-containing solution and a hydroxide ion-containing solution, from respecti... | 11/20/2007 |
| 7291201 | Method for making nano-scale lead-free solder A method for making Nano-scale lead-free solder includes the following steps of: forming a mixture solution Sn-Ag or Sn-Ag-Cu; making NaBH4, NaOH and alkyl C12H25OSO3Na to a reducing dispersing solution; producing reactant... | 11/06/2007 |
| 7270695 | Synthesis of nanosized metal particles The present invention is directed to methods for forming nanosized metal particles. Preferably, nanosized noble metal particles are formed. According to the methods of the invention, a product containing nanosized metal particles in a solvent are formed. Additionall... | 09/18/2007 |
| 7270694 | Stabilized silver nanoparticles and their use A process comprising: reacting a silver compound with a reducing agent comprising a hydrazine compound in the presence of a thermally removable stabilizer in a reaction mixture comprising the silver compound, the reducing agent, the stabilizer, and an optional solve... | 09/18/2007 |
| 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 |
| 7214644 | Cross-coupling reactions A method for producing a copper/palladium colloid catalyst useful for Suzuki couplings. ... | 05/08/2007 |
| 7169731 | Method for the synthesis of a fuel cell electrocatalyst A method for forming a supported metal-containing powder. The method comprises forming a dispersion of a particulate support in a solution, which comprises a solvent and a dissolved metal. Heat is removed from the dispersion to precipitate the dissolved metal from t... | 01/30/2007 |
| 7142408 | Tantalum powders and methods of producing same Methods of forming tantalum powders and other valve metal powders are described. The method involves high impact milling a starting powder in a fluid medium and optionally a milling media using a high energy mill. The methods of the present invention have the abilit... | 11/28/2006 |
| 7087100 | Preparation of nanosized copper and copper compounds The present invention is a process for producing nanosized metal compounds. The preferred product is nanosized copper, nanosized copper (I) oxide, and nanosized copper (II) oxide. The process includes heating a copper metal precursor in a hydrocarbon preferably sele... | 08/08/2006 |
| 7077882 | Gold powders, methods for producing powders and devices fabricated from same Gold powders and methods for producing gold powders. The powders preferably have a small particle size, narrow size distribution and a spherical morphology. The method includes forming the particles by a spray pyrolysis technique. The invention also includes novel d... | 07/18/2006 |
| 7066978 | Nanoparticle, method of producing nanoparticle and magnetic recording medium A method of producing a nanoparticle, the method comprising: a reducing step of adding an reverse micelle solution (II) obtained by mixing a water-insoluble organic solvent containing a surfactant with an aqueous metal salt solution to an reverse micelle solution (I... | 06/27/2006 |
| 7066976 | Method for the production of electrocatalyst powders Electrocatalyst powders and methods for producing electrocatalyst powders, such as carbon composite electrocatalyst powders. The powders have a well-controlled microstructure and morphology. The method includes forming the particles from an aerosol of precursors by ... | 06/27/2006 |
| 7044995 | Purification of metals from mixtures thereof A process for preparing a pure PGM (platinum group metal) from a material containing a plurality of PGM compounds, wherein the PGM is selected from the group consisting of Pt, Pd, Os, Ir, Ru, Rh and Re, and the process includes initially forming the PGM in activated... | 05/16/2006 |
| 7041151 | Electrochemical displacement-deposition method for making composite metal powders An electrochemical displacement-deposition method for making composite metal powders is described. The method is carried out by combining tungsten or molybdenum metal particles with particles of silver oxide or copper oxide in an aqueous hydroxide solution. Heat is ... | 05/09/2006 |
| 7033416 | Low temperature synthesis of metallic nanoparticles A new low temperature method of reducing metallic salts, both inorganic and organic to metallic nanoparticles has been discovered. The reduction reaction is carried out in low boiling point monoalkylethers of ethylene glycol and mixtures of this solvent with alkane ... | 04/25/2006 |
| 6974493 | Method for synthesis of metal nanoparticles Metal nanoparticles are formed by heating or refluxing a mixture of a metal salt, such as a metal acetate, and a passivating solvent, such as a glycol ether, at a temperature above the melting point of the metal salt for an effective amount of time. ... | 12/13/2005 |
| 6974492 | Method for synthesis of metal nanoparticles Metal nanoparticles containing two or more metals are formed by heating or refluxing a mixture of two or more metal salts, such as a metal acetates, and a passivating solvent, such as a glycol ether, at a temperature above the melting point of the metal salts for an... | 12/13/2005 |
| 6942715 | Process for producing metallic titanium A process for producing metallic titanium includes forming metallic titanium fine particles by supplying liquid or mist titanium tetrachloride from above the surface of a reaction bath liquid containing fused magnesium and fused magnesium chloride in a reaction vess... | 09/13/2005 |
| 6929675 | Synthesis metal nanoparticle A method for providing an anhydrous route for the synthesis of amine capped coinage-metal (copper, silver, and gold) nanoparticles (NPs) using the coinage-metal mesityl (mesityl=C6H2(CH3)3-2,4,6) derivatives. In this metho... | 08/16/2005 |
| 6923842 | Method and apparatus for producing fine particles, and fine particles A method and apparatus are invented for producing fine particles, which can readily realize the formation of fine particles of sub-μm order to 100 micron order as well as fine particles of several micrometer which cannot be realized by a conventional method and app... | 08/02/2005 |
| 6918946 | Applications of light-emitting nanoparticles A method for the production of a robust, chemically stable, crystalline, passivated nanoparticle and composition containing the same, that emit light with high efficiencies and size-tunable and excitation energy tunable color. The methods include the thermal degrada... | 07/19/2005 |
