Patents by Inventor Midori Shimura

Midori Shimura 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).

  • Patent number: 8470935
    Abstract: There are provided: a shape-memory resin, which is formed from a polylactic acid derivative thereby enabling reduction of an environmental load, has an excellent shape-memory property, high strength, and high toughness, and with which a molded product with high durability, for example, an electronic equipments, particularly a wearable electronic equipments capable of freely changing the shape thereof or the like, can be shaped; and a molded product thereof. The shape-memory resin of the present invention has a three-dimensional structure, in which a polylactic acid derivative having two or more functional groups capable of forming a cross-linking site is cross-linked using a flexible polymer having a glass transition temperature (Tg) lower than 30° C. and having two or more functional groups capable of forming a cross-linking site, and a linker.
    Type: Grant
    Filed: November 13, 2008
    Date of Patent: June 25, 2013
    Assignee: NEC Corporation
    Inventors: Midori Shimura, Kazuhiko Inoue, Masatoshi Iji
  • Publication number: 20130157119
    Abstract: An object is to provide a secondary battery in which decomposition of an electrolyte liquid is suppressed and generation of a gas is reduced, even in the case of using a laminate film as a package. Further, the present exemplary embodiment provides a secondary battery of stacked laminate type comprising an electrode assembly in which a positive electrode and a negative electrode are arranged to face each other, an electrolyte liquid and a package accommodating the electrode assembly and said electrolyte liquid, wherein the negative electrode is formed by binding a negative electrode active substance comprising a metal (a) capable of being alloyed with lithium, a metal oxide (b) capable of occluding and releasing lithium ions and a carbon material (c) capable of occluding and releasing lithium ions, to a negative electrode current collector, with at least one selected from polyimides and polyamideimides, and the electrolyte liquid comprises a predetermined nitrile compound.
    Type: Application
    Filed: June 23, 2011
    Publication date: June 20, 2013
    Applicant: NEC CORPORATION
    Inventors: Midori Shimura, Daisuke Kawasaki, Masahiro Suguro, Yoko Hashizume, Kazuaki Matsumoto
  • Publication number: 20130157120
    Abstract: The object of an exemplary embodiment of the invention is to provide a secondary battery with a high performance in which the generation of the swelling can be suppressed and in which the cycle property is excellent. An exemplary embodiment of the invention is a secondary battery, comprising an electrode assembly in which a positive electrode and a negative electrode are oppositely disposed, an electrolyte liquid, and a package which encloses the electrode assembly and the electrolyte liquid inside; wherein the negative electrode is formed by binding a negative electrode active substance, which comprises metal (a) that can be alloyed with lithium, metal oxide (b) that can absorb and desorb lithium ion, and carbon material (c) that can absorb and desorb lithium ion, to a negative electrode collector with at least one selected from polyimides and a polyamide-imides; and wherein the electrolyte liquid comprises a compound represented by any one of predetermined formulae.
    Type: Application
    Filed: June 23, 2011
    Publication date: June 20, 2013
    Applicant: NEC CORPORATION
    Inventors: Midori Shimura, Daisuke Kawasaki, Masahiro Suguro, Yoko Hashizume, Kazuaki Matsumoto
  • Publication number: 20130122353
    Abstract: An object of the invention is to provide a secondary battery having satisfactory high-temperature cycle characteristics. The present invention relates to a laminate type secondary battery including an electrode element containing an electrode pair in which a positive electrode and a negative electrode are arranged so as to face each other, an electrolyte and a jacket housing the electrode element and the electrolyte, in which the negative electrode includes a negative-electrode active material containing at least one of a metal (a) capable of forming an alloy with lithium and a metal oxide (b) capable of absorbing and desorbing lithium ions, a negative electrode binder and a negative electrode current collector; the electrolyte contains a nonaqueous solvent and biphenyl; and the content of the biphenyl in the electrolyte is 0.5 to 2.5% by mass, based on the total of the nonaqueous solvent and the biphenyl.
    Type: Application
    Filed: August 22, 2011
    Publication date: May 16, 2013
    Applicant: NEC CORPORATION
    Inventors: Daisuke Kawasaki, Masahiro Suguro, Midori Shimura, Kazuaki Matsumoto, Yoko Hashizume
  • Publication number: 20120264905
    Abstract: Provided is a polylactic acid-based polyol composition in which a catalyst that remains in the polylactic acid-based polyol and that acts also as a catalyst for urethane formation has been deactivated by easy means. Thus, the polylactic acid-based polyol composition suffers from little influence of the catalyst on urethane formation. When the polylactic acid-based polyol composition is used as a raw material for a urethane resin, therefore, uniform molded products can be obtained. Also provided are a process for the production of the polylactic acid-based polyol composition, a urethane resin composition obtained using the polylactic acid-based polyol composition, a process for the production of the same, and molded products thereof.
    Type: Application
    Filed: October 25, 2010
    Publication date: October 18, 2012
    Inventors: Midori Shimura, Kazuhiko Inoue
  • Publication number: 20100240841
    Abstract: There are provided: a shape-memory resin, which is formed from a polylactic acid derivative thereby enabling reduction of an environmental load, has an excellent shape-memory property, high strength, and high toughness, and with which a molded product with high durability, for example, an electronic equipments, particularly a wearable electronic equipments capable of freely changing the shape thereof or the like, can be shaped; and a molded product thereof. The shape-memory resin of the present invention has a three-dimensional structure, in which a polylactic acid derivative having two or more functional groups capable of forming a cross-linking site is cross-linked using a flexible polymer having a glass transition temperature (Tg) lower than 30° C. and having two or more functional groups capable of forming a cross-linking site, and a linker.
    Type: Application
    Filed: November 13, 2008
    Publication date: September 23, 2010
    Applicant: NEC CORPORATION
    Inventors: Midori Shimura, Kazuhiko Inoue, Masatoshi Iji
  • Patent number: 7723460
    Abstract: It is possible to provide a shape-memory molded product having excellent shape-memory properties and recycling efficiency by using a shape-memory resin having a glass transition temperature (Tg) within the range of 40° C. to 200° C. and a dissociation temperature (Td) of a thermo-reversible reaction within the range of 50° C. to 300° C. and satisfying the relationship: Tg+10° C.?Td, wherein the resin is deformed at a temperature of Tg to less than Td, and cross-linked through a thermo-reversible reaction in which a covalent bond is formed by cooling and dissociated by heating.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: May 25, 2010
    Assignee: NEC Corporation
    Inventors: Midori Shimura, Kazuhiko Inoue, Masatoshi Iji
  • Publication number: 20070148465
    Abstract: It is possible to provide a shape-memory molded product having excellent shape-memory properties and recycling efficiency by using a shape-memory resin having a glass transition temperature (Tg) within the range of 40° C. to 200° C. and a dissociation temperature (Td) of a thermo-reversible reaction within the range of 50° C. to 300° C. and satisfying the relationship: Tg+10° C.?Td, wherein the resin is deformed at a temperature of Tg to less than Td, and cross-linked through a thermo-reversible reaction in which a covalent bond is formed by cooling and dissociated by heating.
    Type: Application
    Filed: December 10, 2004
    Publication date: June 28, 2007
    Inventors: Midori Shimura, Kazuhiko Inoue, Masatoshi Iji