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: 11028186
    Abstract: A cellulose derivative obtained by substituting at least part of hydrogen atoms of hydroxy groups of a cellulose with an acyl group having 2 to 4 carbon atoms, a long-chain organic group having 7 or more carbon atoms and a high refractive-index organic group.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: June 8, 2021
    Assignee: NEC CORPORATION
    Inventors: Kiyohiko Toyama, Masatoshi Iji, Midori Shimura, Shukichi Tanaka
  • Patent number: 10982009
    Abstract: To provide a cellulose derivative excellent in thermoplasticity, water resistance and strength (elastic modulus, impact strength), a cellulose derivative, which is obtained by introducing a short-chain organic group (acetyl group), a medium-chain organic group having 3 to 5 carbon atoms and a long-chain organic group having 6 to 30 carbon atoms at the following substitution degrees DSs into a cellulose, is used: Short-chain organic group: 0.7?DSSH?1.5; Medium-chain organic group: 0.5?DSME?2.0; Long-chain organic group: 0.1?DSLO<0.5; and 2.4?DSSH+DSME+DSLO?3.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: April 20, 2021
    Assignee: NEC CORPORATION
    Inventors: Midori Shimura, Shukichi Tanaka, Kiyohiko Toyama, Masatoshi Iji
  • Publication number: 20210070966
    Abstract: A cellulose resin composition comprising a cellulose derivative (A) and a lubricant (B), wherein the cellulose derivative (A) is a cellulose derivative obtained by substituting at least a part of hydrogen atoms of hydroxyl groups of a cellulose with a short-chain organic group having 2 to 4 carbon atoms and a long-chain organic group having 8 to 30 carbon atoms with specific degrees of substitution; the lubricant (B) is at least one selected from the group consisting of a urea compound (B1) having a urea group (—NH—C(?O)—NH—) and an acyclic aliphatic group having 6 to 33 carbon atoms, an amide compound (B2) having an amide group (—C(?O)—NH—) and an acyclic aliphatic group having 6 to 33 carbon atoms, a fatty acid metal salt (B3), and a silicone-based lubricant (B4); and a content of the lubricant (B) is in a range of 0.1 to 10% by mass. A cellulose resin composition capable of forming a molded body having a high-quality appearance and scratch resistance is provided.
    Type: Application
    Filed: December 17, 2018
    Publication date: March 11, 2021
    Applicant: NEC CORPORATION
    Inventors: Midori SHIMURA, Shukichi TANAKA, Kiyohiko TOYAMA, Masatoshi IJI, Mina SHIMIZU, Toshie MIYAMOTO
  • Patent number: 10934368
    Abstract: A cellulose resin formed by substituting hydrogen atoms of hydroxy groups of a cellulose with a long-chain component being a linear saturated aliphatic acyl group having 14 or more carbon atoms and a short-chain component being an acyl group having 2 or 3 carbon atoms, in which a degree of substitution with the long-chain component (DSLo) and a degree of substitution with the short-chain component (DSSh) satisfy conditional expressions (1) and (2) shown below: DSLo+DSSh?2.1??(1) 4?DSSh/DSLo?12??(2).
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: March 2, 2021
    Assignee: NEC CORPORATION
    Inventors: Shukichi Tanaka, Midori Shimura, Masatoshi Iji
  • Publication number: 20200385548
    Abstract: A cellulose resin composition comprising a cellulose derivative and a lubricant, wherein the cellulose derivative is an acylated cellulose obtained by substituting at least a part of hydrogen atoms of hydroxy groups of a cellulose with an acyl group having 2 to 4 carbon atoms, and the content of the lubricant is in the range of 0.1 to 10% by mass. A cellulose resin composition capable of forming a molded body having a high-quality appearance and scratch resistance is provided.
    Type: Application
    Filed: December 17, 2018
    Publication date: December 10, 2020
    Applicant: NEC CORPORATION
    Inventors: Kiyohiko TOYAMA, Mina SHIMIZU, Masatoshi IJI, Midori SHIMURA, Shukichi TANAKA, Toshie MIYAMOTO
  • Publication number: 20200181289
    Abstract: A cellulose resin wherein a hydrogen atom of a hydroxy group of cellulose is substituted with a long-chain component which is a linear saturated aliphatic acyl group having 14 or more carbon atoms and a short-chain component which is an acyl group (propionyl group) having 3 carbon atoms, the degree of substitution with the long-chain component (DSLo) and the degree of substitution with the short-chain component (DSSh) satisfy the following conditional expressions (1) and (2): DSLo+DSSh?2.1??(1) 4?DSSh/DSLo?12??(2), the Izod impact strength is 5.0 kJ/m2 or more, and the MFR (melt flow rate at 200° C. and under a load of 5 kg) is 10 g/10 min or more.
    Type: Application
    Filed: May 31, 2018
    Publication date: June 11, 2020
    Applicant: NEC CORPORATION
    Inventors: Shukichi TANAKA, Midori SHIMURA
  • Publication number: 20190330379
    Abstract: A cellulose derivative obtained by substituting at least part of hydrogen atoms of hydroxy groups of a cellulose with an acyl group having 2 to 4 carbon atoms, a long-chain organic group having 7 or more carbon atoms and a high refractive-index organic group.
    Type: Application
    Filed: June 15, 2017
    Publication date: October 31, 2019
    Applicant: NEC CORPORATION
    Inventors: Kiyohiko TOYAMA, Masatoshi IJI, Midori SHIMURA, Shukichi TANAKA
  • Patent number: 10431825
    Abstract: The present invention relates to a negative electrode for a lithium ion secondary battery comprising an oxetane compound represented by a predetermined formula in an amount within a range of 0.001% by mass or more and 5.0% by mass or less based on the amount of a negative electrode active material, and a lithium ion secondary battery using the same.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: October 1, 2019
    Assignee: NEC CORPORATION
    Inventors: Midori Shimura, Noriyuki Tamura, Kentaro Nakahara
  • Patent number: 10290894
    Abstract: An exemplary embodiment of the present invention is a secondary battery which comprises a negative electrode and a battery electrolyte liquid comprising a supporting salt and a non-aqueous electrolyte solvent; wherein the negative electrode is obtained by pre-forming a SEI coating film on a negative electrode structure which is formed by binding a negative electrode active substance comprising a metal (a). that can be alloyed with lithium, a metal oxide (b) that can absorb and desorb lithium ion and a carbon material (c) that can absorb and desorb lithium ion, to a negative electrode current collector with a negative electrode binder, and wherein the non-aqueous electrolyte solvent contains at least an ionic liquid.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: May 14, 2019
    Assignee: NEC CORPORATION
    Inventors: Kazuaki Matsumoto, Daisuke Kawasaki, Masahiro Suguro, Midori Shimura, Yoko Hashizume
  • Publication number: 20190010251
    Abstract: A cellulose resin formed by substituting hydrogen atoms of hydroxy groups of a cellulose with a long-chain component being a linear saturated aliphatic acyl group having 14 or more carbon atoms and a short-chain component being an acyl group having 2 or 3 carbon atoms, in which a degree of substitution with the long-chain component (DSLo) and a degree of substitution with the short-chain component (DSSh) satisfy conditional expressions (1) and (2) shown below: DSLo+DSSh?2.1??(1) 4?DSSh/DSLo?12??(2).
    Type: Application
    Filed: December 9, 2016
    Publication date: January 10, 2019
    Applicant: NEC CORPORATION
    Inventors: Shukichi TANAKA, Midori SHIMURA, Masatoshi IJI
  • Publication number: 20180342769
    Abstract: Provided is a lithium secondary cell which has high capacity, suppresses deterioration in capacity and improves cycle characteristics particularly when used in high-temperature environments and has long lifespan. Provided is a lithium secondary cell including a positive electrode active material layer containing a positive electrode active material, a negative electrode active material layer containing a negative electrode active material and an electrolytic solution for immersing the positive and negative electrode active material layers, wherein the electrolytic solution contains at least one certain ester compound.
    Type: Application
    Filed: July 31, 2018
    Publication date: November 29, 2018
    Applicant: NEC Corporation
    Inventors: Masahiro SUGURO, Midori SHIMURA
  • Publication number: 20180291117
    Abstract: To provide a cellulose derivative excellent in thermoplasticity, water resistance and strength (elastic modulus, impact strength), a cellulose derivative, which is obtained by introducing a short-chain organic group (acetyl group), a medium-chain organic group having 3 to 5 carbon atoms and a long-chain organic group having 6 to 30 carbon atoms at the following substitution degrees DSs into a cellulose, is used: Short-chain organic group: 0.7?DSSH?1.5; Medium-chain organic group: 0.5?DSME?2.0; Long-chain organic group: 0.1?DSLO<0.5; and 2.4?DSSH+DSME+DSLO?3.
    Type: Application
    Filed: August 29, 2016
    Publication date: October 11, 2018
    Applicant: NEC CORPORATION
    Inventors: Midori SHIMURA, Shukichi TANAKA, Kiyohiko TOYAMA, Masatoshi IJI
  • Patent number: 9786952
    Abstract: An object of the present invention is to provide a high-capacity, long-life lithium secondary cell suppressing a reduction in capacity particularly with respect to use under a high-temperature environment, and having improved cycle properties. The lithium secondary cell comprises a positive electrode active material layer containing a positive electrode active material, a negative electrode active material layer containing a silicon-based material as a negative electrode active material, and an electrolytic solution in which the positive electrode active material layer and the negative electrode active material layer are immersed, the electrolytic solution contains one or more of specific cyclic acid anhydrides.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: October 10, 2017
    Assignee: NEC CORPORATION
    Inventors: Masahiro Suguro, Midori Shimura
  • Patent number: 9666904
    Abstract: The present invention relates to a secondary battery, comprising an electrode element in which a positive electrode and a negative electrode are opposed to each other, and an electrolyte solution, wherein the negative electrode active material comprises a metal alloyable with lithium and/or a metal oxide capable of intercalating/deintercalating lithium ions, and the electrolyte solution is a nonaqueous electrolyte solution comprising an electrolyte salt dissolved in a nonaqueous solvent, and comprises a carbonyl compound represented by the following formula (1): wherein two R1s may be the same or different from each other, and each independently represents hydrogen atom, substituted or unsubstituted alkyl group, cycloalkyl group, alkenyl group, alkynyl group, substituted or unsubstituted aromatic group, oxyalkylene group, substituted or unsubstituted alkoxy group, cycloalkyloxy group, alkenyloxy group, alkynyloxy group, substituted or unsubstituted aromatic oxy group, or oxyalkyleneoxy group.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: May 30, 2017
    Assignee: NEC Corporation
    Inventors: Masahiro Suguro, Midori Shimura
  • Patent number: 9543618
    Abstract: An objection is to provide a high performance secondary battery having good flame retardancy and cycle properties. The present exemplary embodiment provides a secondary battery 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 the 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 a negative electrode binder, and the electrolyte liquid comprises a supporting salt and an electrolytic solvent, the electrolytic solvent comprising at least one phosphate ester compound selected from phosphite esters, phosphonate esters and bisphosphonate esters.
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: January 10, 2017
    Assignee: NEC CORPORATION
    Inventors: Kazuaki Matsumoto, Daisuke Kawasaki, Masahiro Suguro, Midori Shimura, Yoko Hashizume
  • Patent number: 9466827
    Abstract: An object of the present invention is to provide a secondary battery in which the decomposition of an electrolyte liquid is suppressed and the generation of a gas is reduced, even in the case of using a laminate film as a package.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: October 11, 2016
    Assignee: NEC CORPORATION
    Inventors: Midori Shimura, Daisuke Kawasaki, Masahiro Suguro, Yoko Hashizume, Kazuaki Matsumoto
  • Patent number: 9425480
    Abstract: The object is to provide a secondary battery with higher performance, and especially to provide a secondary battery having low impedance. 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 to a negative electrode collector with a negative electrode binder; and wherein the electrolyte liquid comprises a fluorine-containing cyclic ether compound.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: August 23, 2016
    Assignee: NEC CORPORATION
    Inventors: Masahiro Suguro, Daisuke Kawasaki, Midori Shimura, Kazuaki Matsumoto, Yoko Hashizume
  • Publication number: 20160172677
    Abstract: The present invention relates to a negative electrode for a lithium ion secondary battery comprising an oxetane compound represented by a predetermined formula in an amount within a range of 0.001% by mass or more and 5.0% by mass or less based on the amount of a negative electrode active material, and a lithium ion secondary battery using the same.
    Type: Application
    Filed: August 4, 2014
    Publication date: June 16, 2016
    Applicant: NEC Corporation
    Inventors: MIDORI SHIMURA, NORIYUKI TAMURA, KENTARO NAKAHARA
  • Patent number: 9299985
    Abstract: Provided is a secondary battery having a good battery property at a high temperature. A secondary battery according to an exemplary embodiment of the invention comprises a negative electrode and an electrolyte liquid; wherein the negative electrode is formed by binding a negative electrode active substance on a negative electrode collector with a negative electrode binder; and wherein the electrolyte liquid comprises a compound (A) having a C?S bond. In this embodiment, the negative electrode active substance is formed by covering at least one of a metal (a) that can be alloyed with lithium and a metal oxide (b) that can absorb and desorb a lithium ion with a carbon material (c). Alternatively, the negative electrode active substance comprises a metal (a) that can be alloyed with lithium and the negative electrode binder negative electrode is a polyimide or a polyamide-imide.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: March 29, 2016
    Assignee: NEC CORPORATION
    Inventors: Yoko Hashizume, Daisuke Kawasaki, Masahiro Suguro, Midori Shimura, Kazuaki Matsumoto
  • Publication number: 20160006010
    Abstract: The present invention relates to a negative electrode for a lithium secondary battery containing a lithium sulfonate represented by a general formula (I) and provides a secondary battery that is excellent in a cycle characteristic and a storage characteristic under a high temperature environment: wherein R represents an n-valent aliphatic hydrocarbon group having 1 to 30 carbon atoms, an n-valent mononuclear aromatic group or an n-valent binuclear condensed aromatic group, and n represents 1 or 2.
    Type: Application
    Filed: January 16, 2014
    Publication date: January 7, 2016
    Applicant: NEC Corporation
    Inventors: Masahiro SUGURO, Midori SHIMURA, Noriyuki TAMURA, Kentaro NAKAHARA