Patents by Inventor Jian-Jun Yuan

Jian-Jun Yuan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20160264832
    Abstract: The present invention provides a resin composition including aluminum oxide (A) containing molybdenum having a size on the order of ?m or less and a resin (B); and a resin molded body formed by molding the resin composition. Also, the present invention provides a heat-dissipating material containing the resin composition; and a heat-dissipating member containing the resin molded body. The heat-dissipating member of the present invention can be used for electronic parts such as electronic devices, electric devices, OA devices or for LED illumination.
    Type: Application
    Filed: October 7, 2014
    Publication date: September 15, 2016
    Applicant: DIC Corporation
    Inventors: Jian-Jun YUAN, Hiroshi KINOSHITA
  • Patent number: 9353735
    Abstract: Provided is a device for metering and dispensing a liquid or viscous product. The device includes an inlet opening at a lower longitudinal end for the passage of the product from a container, an outlet opening at an upper longitudinal end for the dispensing of the product from the device, and a main chamber accommodating a piston that moves lengthwise with respect to the main chamber.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: May 31, 2016
    Inventors: Jacques Gerbron, Patrick Lagneaux, Jian Jun Yuan
  • Patent number: 9220689
    Abstract: Methods for the preparation of polymer-templated core-shell nanoparticles include the steps of (a) preparing a cationic polymeric core material comprising polymeric micelles, and (b) coating the core material with a silica-comprising shell by depositing the shell onto the polymeric micelles from at least one silica precursor to form the core-shell nanoparticles. Compositions which include the core-shell nanoparticles are adapted to facilitate controlled delivery of at least one active agent into a system in response to controlled changes in the pH of the system.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: December 29, 2015
    Assignee: DSM IP ASSETS B.V.
    Inventors: Steven Armes, Jian-Jun Yuan
  • Publication number: 20150139834
    Abstract: The present invention relates to a pump for metering and dispensing a liquid or viscous product. This pump (1) is characterized in that the separation chamber (9a) between the main chamber (9) and the piston (10), with said piston (10) impelling the product toward the outlet opening (7) of the pump (1), is sealed with respect to the flow of the product, the latter not passing through said separation chamber, and in that the means (16) for returning the piston to its position closing the outlet opening (7) may be accommodated in this separation chamber (9a). Application to the field of dispensing a liquid or viscous product from a container, especially to spraying of said product.
    Type: Application
    Filed: May 11, 2012
    Publication date: May 21, 2015
    Inventors: Jacques Gerbron, Patrick Lagneaux, Jian Jun Yuan
  • Publication number: 20140037741
    Abstract: Methods for the preparation of polymer-templated core-shell nanoparticles include the steps of (a) preparing a cationic polymeric core material comprising polymeric micelles, and (b) coating the core material with a silica-comprising shell by depositing the shell onto the polymeric micelles from at least one silica precursor to form the core-shell nanoparticles. Compositions which include the core-shell nanoparticles are adapted to facilitate controlled delivery of at least one active agent into a system in response to controlled changes in the pH of the system.
    Type: Application
    Filed: October 11, 2013
    Publication date: February 6, 2014
    Applicant: DSM IP ASSETS B.V.
    Inventors: Steven ARMES, Jian-Jun YUAN
  • Patent number: 8580311
    Abstract: Methods for the preparation of polymer-templated core-shell nanoparticles include the steps of (a) preparing a cationic polymeric core material comprising polymeric micelles, and (b) coating the core material with a silica-comprising shell by depositing the shell onto the polymeric micelles from at least one silica precursor to form the core-shell nanoparticles. Compositions which include the core-shell nanoparticles are adapted to facilitate controlled delivery of at least one active agent into a system in response to controlled changes in the pH of the system.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: November 12, 2013
    Assignee: DSM IP Assets B.V.
    Inventors: Steven Armes, Jian-Jun Yuan
  • Patent number: 8257662
    Abstract: The present invention provides a structure in which the surface of a solid substrate of any shape is covered with metal oxide, in particular, a nanostructure composite in which polyethyleneimine, which is an organic substance, and metal oxide, which is an inorganic substance, are combined in nano-meter scale, spreads at the entire surface of a substrate, and the nanostructure composite forms a nano-boundary of complex shapes so as to thoroughly cover the entire surface of the substrate; a structure in which metal ions, metal nano-particles, organic pigment molecules are contained in the nanostructure composite; a process for producing these structures which can produce these structures with ease and efficiently; and an application method for the structures as an immobilized catalyst type reactor.
    Type: Grant
    Filed: September 1, 2008
    Date of Patent: September 4, 2012
    Assignees: Kawamura Institute of Chemical Research, DIC Corporation
    Inventors: Ren-Hua Jin, Jian-Jun Yuan
  • Publication number: 20120128982
    Abstract: Methods for the preparation of polymer-templated core-shell nanoparticles include the steps of (a) preparing a cationic polymeric core material comprising polymeric micelles, and (b) coating the core material with a silica-comprising shell by depositing the shell onto the polymeric micelles from at least one silica precursor to form the core-shell nanoparticles. Compositions which include the core-shell nanoparticles are adapted to facilitate controlled delivery of at least one active agent into a system in response to controlled changes in the pH of the system.
    Type: Application
    Filed: January 31, 2012
    Publication date: May 24, 2012
    Applicant: DSM IP ASSETS B.V.
    Inventors: Steven ARMES, Jian-Jun YUAN
  • Patent number: 8017234
    Abstract: The present invention relates to a structural object coated with a superhydrophobic nanostructure composite, the structural object being obtained by densely coating a surface of a solid substrate having a desired shape with a nanostructure obtained by combining a polymer having a polyethyleneimine skeleton with silica on the nanometer order, and bonding a hydrophobic group to the surface of the nanostructure, and a process for producing the structural object. The present invention also relates to a structural object coated with a superhydrophobic nanostructure composite, the structural object being obtained by removing the polymer having the polyethyleneimine skeleton from the nanostructure and bonding a hydrophobic group to the surface of the residual nanostructure containing silica as a main constituent component, and a process for producing the structural object. Furthermore, the present invention provides a method of using the structural object as a container for transferring an aqueous solution.
    Type: Grant
    Filed: May 25, 2009
    Date of Patent: September 13, 2011
    Assignees: DIC Corporation, Kawamura Institute of Chemical Research
    Inventors: Ren-Hua Jin, Jian-Jun Yuan
  • Publication number: 20110195181
    Abstract: A process for producing superhydrophobic powders comprising silica as the main component and the surface of the powders have a contact angle with water of 150° or larger; and a structure having a superhydrophobic surface comprising the powders. The process comprised: introducing hydrophobic groups into the silica present in the surface of aggregates of organic/inorganic composite nanofibers obtained by combining a polymer, which is an organic substance, with silica, which is an inorganic substance, on the order of nanometer or into the silica obtained by calcining the organic/inorganic composite nanofibers and removing the polymer there from; and thereby making powders composed of the aggregates superhydrophobic. Also provided is a superhydrophobic powders obtained by the process. The structure having a superhydrophobic surface is obtained by fixing the superhydrophobic powders to a surface of a solid substrate.
    Type: Application
    Filed: July 27, 2009
    Publication date: August 11, 2011
    Applicants: DIC Corporation, Kawamura Institute of Chemical Research
    Inventors: Ren-Hua Jin, Jian-Jun Yuan
  • Publication number: 20110160374
    Abstract: The present invention relates to a structural object coated with a superhydrophobic nanostructure composite, the structural object being obtained by densely coating a surface of a solid substrate having a desired shape with a nanostructure obtained by combining a polymer having a polyethyleneimine skeleton with silica on the nanometer order, and bonding a hydrophobic group to the surface of the nanostructure, and a process for producing the structural object. The present invention also relates to a structural object coated with a superhydrophobic nanostructure composite, the structural object being obtained by removing the polymer having the polyethyleneimine skeleton from the nanostructure and bonding a hydrophobic group to the surface of the residual nanostructure containing silica as a main constituent component, and a process for producing the structural object. Furthermore, the present invention provides a method of using the structural object as a container for transferring an aqueous solution.
    Type: Application
    Filed: May 25, 2009
    Publication date: June 30, 2011
    Inventors: Ren-Hua Jin, Jian-Jun Yuan
  • Publication number: 20100215555
    Abstract: The present invention provides a structure in which the surface of a solid substrate of any shape is covered with metal oxide, in particular, a nanostructure composite in which polyethyleneimine, which is an organic substance, and metal oxide, which is an inorganic substance, are combined in nano-meter scale, spreads at the entire surface of a substrate, and the nanostructure composite forms a nano-boundary of complex shapes so as to thoroughly cover the entire surface of the substrate; a structure in which metal ions, metal nano-particles, organic pigment molecules are contained in the nanostructure composite; a process for producing these structures which can produce these structures with ease and efficiently; and an application method for the structures as an immobilized catalyst type reactor.
    Type: Application
    Filed: September 1, 2008
    Publication date: August 26, 2010
    Applicants: KAWAMURA INSTITUTE OF CHEMICAL RESEARCH, DIC CORPORATION
    Inventors: Ren-Hua Jin, Jian Jun Yuan
  • Patent number: 7670509
    Abstract: A silica nanofiber is derived from a crystalline polymer filament of a polymer including straight chain polyethyleneimine backbones, which is capable of forming a water-insoluble crystal in the presence of water molecules at room temperature, and the crystalline polymer filament in the silica concentrates metal ions, thereby realizing a composite nanofiber including metals or metal ions in the silica. Furthermore, the composite nanofiber of the present invention can be easily produced by fixing a polymer structure in the silica as the scaffold for metal ions and concentrating metal ions at the scaffold or reducing the metal ions. Furthermore, a metal-containing silica nanofiber can be easily obtained by removing a polymer component from the composite nanofiber, the composite nanofiber association, and the complex nanofiber structure. These nanofibers can be assembled and integrated, and the assembled or integrated association or structure can realize various shapes.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: March 2, 2010
    Assignee: Kawamura Institute of Chemical Research
    Inventors: Ren-Hua Jin, Jian-Jun Yuan
  • Publication number: 20100009001
    Abstract: The invention provides a composition comprising core-shell nanoparticles, the nanoparticles comprising (a) cationic core material comprising polymer; and (b) a shell material comprising silica. Preferred core materials comprise diblock copolymer micelles comprising one block of dialkylaminoethyl methacrylate units which are partially or fully quaternised and one block of dialkylaminoethyl methacrylate units that remain non-quaternised. The invention also provides a method for the preparation of the said composition, the method involving (a) preparing a cationic core material comprising polymer; and (b) coating the core material with a shell comprising silica by treating the polymer with a silica precursor under ambient conditions. The invention also envisages a composition comprising core-shell nanoparticles which is adapted to facilitate controlled delivery of at least one active agent into a system in response to controlled changes in the pH of the system.
    Type: Application
    Filed: September 5, 2007
    Publication date: January 14, 2010
    Inventors: Steven Armes, Jian-Jun Yuan
  • Patent number: 7645828
    Abstract: Monodisperse silica spheres containing polyamine, which comprise a polymer (A) having a linear polyethyleneimine chain, a compound (B) having an acidic group, and silica (C).
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: January 12, 2010
    Assignee: Kawamura Institute of Chemical Research
    Inventors: Ren-Hua Jin, Jian-Jun Yuan
  • Publication number: 20090036591
    Abstract: Monodisperse silica spheres containing polyamine, which comprise a polymer (A) having a linear polyethyleneimine chain, a compound (B) having an acidic group, and silica (C).
    Type: Application
    Filed: March 29, 2006
    Publication date: February 5, 2009
    Applicant: KAWAMURA INSTITUTE OF CHEMICAL RESEARCH
    Inventors: Ren-Hua Jin, Jian-Jun Yuan
  • Publication number: 20080308655
    Abstract: This utility model relates to a trigger sprayer structure with children protection functions, which added a mechanism for limiting the revolving of the head cap on the basis of the former spray gun structure, said mechanism includes a stop groove formed on the head cap as an integral, said stop groove is provided with a elastic joint with the head cap, a pressing component for manual pressing, said trigger is provided with a stop block correspondingly, said stop block insertion component being inserted in the stop groove of said cap. This structure can prevent children from easily revolving the head cap, thus preventing children from using the spray gun containing hazardous liquid.
    Type: Application
    Filed: September 13, 2007
    Publication date: December 18, 2008
    Inventor: Jian Jun Yuan
  • Publication number: 20070197708
    Abstract: A silica nanofiber is derived from a crystalline polymer filament of a polymer including straight chain polyethyleneimine backbones, which is capable of forming a water-insoluble crystal in the presence of water molecules at room temperature, and the crystalline polymer filament in the silica concentrates metal ions, thereby realizing a composite nanofiber including metals or metal ions in the silica. Furthermore, the composite nanofiber of the present invention can be easily produced by fixing a polymer structure in the silica as the scaffold for metal ions and concentrating metal ions at the scaffold or reducing the metal ions. Furthermore, a metal-containing silica nanofiber can be easily obtained by removing a polymer component from the composite nanofiber, the composite nanofiber association, and the complex nanofiber structure. These nanofibers can be assembled and integrated, and the assembled or integrated association or structure can realize various shapes.
    Type: Application
    Filed: May 27, 2005
    Publication date: August 23, 2007
    Applicant: KAWAMURA INSTITUTE OF CHEMICAL RESEARCH
    Inventors: Ren-Hua Jin, Jian-Jun Yuan
  • Publication number: 20070166472
    Abstract: The present invention relates to an organic-inorganic hybrid nanofiber formed from a crystalline polymer filament made of a polymer having a straight-chain polyethyleneimine skeleton, and a silica covering the aforementioned crystalline polymer filament, a structure formed from the aforementioned organic-inorganic hybrid nanofiber, and a method for producing the same.
    Type: Application
    Filed: February 14, 2005
    Publication date: July 19, 2007
    Applicant: Kawamura Institute of Chemical Research
    Inventors: Ren-Hua Jin, Jian-Jun Yuan