Patents by Inventor Masatoshi Iji

Masatoshi Iji 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
  • Patent number: 10961388
    Abstract: Resin compositions according to exemplary embodiments of the present invention are first compositions containing a polylactic acid resin, an aliphatic polyester resin, a surface-treated metal hydrate, and a carbodiimide compound, or second compositions containing a polysiloxane-mixed polyester resin, a phosphorus-containing flame retardant, a metal hydrate and a fluorine-containing polymer in specific ratios.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: March 30, 2021
    Assignee: NEC CORPORATION
    Inventors: Makoto Soyama, Masatoshi Iji, Shukichi Tanaka, Kiyohiko Toyama
  • 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: 10941282
    Abstract: A cellulose resin composition comprising a cellulose resin, a high refractive-index organic material and a carbon black, in which the cellulose resin is an acylated cellulose 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, the carbon black is an acidic carbon black, the mass fraction (B/A) of the high refractive-index organic material (B) to the cellulose resin (A) falls within the range of 10/90 to 70/30, and the content of the carbon black (C) relative to the total of the cellulose resin composition falls within the range of 0.05 to 10% by mass.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: March 9, 2021
    Assignees: NEC CORPORATION
    Inventors: Kiyohiko Toyama, Masatoshi Iji, Kunihiko Ishihara, Yutaro Shimode
  • 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: 20200263028
    Abstract: Resin compositions according to exemplary embodiments of the present invention are first compositions containing a polylactic acid resin, an aliphatic polyester resin, a surface-treated metal hydrate, and a carbodiimide compound, or second compositions containing a polysiloxane-mixed polyester resin, a phosphorus-containing flame retardant, a metal hydrate and a fluorine-containing polymer in specific ratios.
    Type: Application
    Filed: December 2, 2016
    Publication date: August 20, 2020
    Applicant: NEC CORPORATION
    Inventors: Makoto SOYAMA, Masatoshi IJI, Shukichi TANAKA, Kiyohiko TOYAMA
  • Publication number: 20190330450
    Abstract: A cellulose resin composition comprising a cellulose resin, a high refractive-index organic material and a carbon black, in which the cellulose resin is an acylated cellulose 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, the carbon black is an acidic carbon black, the mass fraction (B/A) of the high refractive-index organic material (B) to the cellulose resin (A) falls within the range of 10/90 to 70/30, and the content of the carbon black (C) relative to the total of the cellulose resin composition falls within the range of 0.05 to 10% by mass.
    Type: Application
    Filed: June 15, 2017
    Publication date: October 31, 2019
    Applicant: NEC CORPORATION
    Inventors: Kiyohiko TOYAMA, Masatoshi IJI, Kunihiko ISHIHARA, Yutaro SHIMODE
  • 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
  • Publication number: 20190169402
    Abstract: A cellulose resin composition containing a cellulose resin (A) and a high refractive-index organic material (B), in which the cellulose resin (A) is 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 and a long-chain organic group having 7 or more carbon atoms, and the mass fraction (B/A) of the high refractive-index organic material (B) to the cellulose resin (A) falls within the range of 10/90 to 70/30.
    Type: Application
    Filed: June 15, 2017
    Publication date: June 6, 2019
    Applicant: NEC CORPORATION
    Inventors: Kiyohiko TOYAMA, Masatoshi IJI, Kunihiko ISHIHARA
  • Publication number: 20190048099
    Abstract: A method for producing a cellulose derivative, including reacting a mixed acid anhydride having two particular types of acyl groups with cellulose in the presence of a base catalyst in an organic solvent having an electron pair-donating property to form a cellulose derivative with the two types of acyl groups derived from the mixed acid anhydride, the acyl groups being introduced at hydroxy groups in the cellulose.
    Type: Application
    Filed: October 15, 2018
    Publication date: February 14, 2019
    Applicant: NEC Corporation
    Inventors: Shukichi TANAKA, Kiyohiko TOYAMA, Masatoshi IJI
  • 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: 20180355066
    Abstract: A process for producing a cellulose derivative, comprising: a first step including reacting a cellulose and a first reactant comprising a long-chain reactant for reacting with a hydroxy group of the cellulose to introduce a long-chain organic group having 5 or more carbon atoms, in a solid-liquid heterogeneous system, to form a cellulose derivative in a swollen state, the cellulose derivative having the long-chain organic group having 5 or more carbon atoms introduced therein and having a part of hydroxy groups of the cellulose remained, and performing solid-liquid separation to obtain the cellulose derivative as an intermediate; and a second step including reacting the intermediate cellulose derivative and a second reactant comprising a short-chain reactant for reacting with a remaining hydroxy group of the intermediate cellulose derivative to introduce a short-chain organic group having 4 or less carbon atoms to form a final cellulose derivative having the short-chain organic group having 4 or less carbon a
    Type: Application
    Filed: June 11, 2018
    Publication date: December 13, 2018
    Applicant: NEC Corporation
    Inventors: Kiyohiko TOYAMA, Masatoshi IJI, Shukichi TANAKA
  • Publication number: 20180346713
    Abstract: A polylactic acid resin composition according to an embodiment of the invention includes a polylactic acid resin, an aliphatic polyester resin, a carbodiimide compound and a metal hydrate, in which the metal hydrate is surface-treated with a specific silane coupling agent; and the carbodiimide compound includes an aliphatic carbodiimide compound.
    Type: Application
    Filed: December 2, 2016
    Publication date: December 6, 2018
    Applicant: NEC CORPORATION
    Inventors: Makoto SOYAMA, Masatoshi IJI, Shukichi TANAKA, Kiyohiko TOYAMA
  • 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: 10005849
    Abstract: A process for producing a cellulose derivative, comprising: a first step including reacting a cellulose and a first reactant comprising a long-chain reactant for reacting with a hydroxy group of the cellulose to introduce a long-chain organic group having 5 or more carbon atoms, in a solid-liquid heterogeneous system, to form a cellulose derivative in a swollen state, the cellulose derivative having the long-chain organic group having 5 or more carbon atoms introduced therein and having a part of hydroxy groups of the cellulose remained, and performing solid-liquid separation to obtain the cellulose derivative as an intermediate; and a second step including reacting the intermediate cellulose derivative and a second reactant comprising a short-chain reactant for reacting with a remaining hydroxy group of the intermediate cellulose derivative to introduce a short-chain organic group having 4 or less carbon atoms to form a final cellulose derivative having the short-chain organic group having 4 or less carbon a
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: June 26, 2018
    Assignee: NEC Corporation
    Inventors: Kiyohiko Toyama, Masatoshi Iji, Shukichi Tanaka
  • Publication number: 20170260294
    Abstract: A cellulose derivative having a long-chain organic group having 5 or more carbon atoms and a short-chain organic group having 4 or less carbon atoms which are introduced by use of hydroxy groups of a cellulose, and including a crystal structure derived from a cellulose derivative portion to which the short-chain organic group is linked, wherein an average number of hydroxy groups per glucose unit is of 1.0 or less.
    Type: Application
    Filed: April 24, 2015
    Publication date: September 14, 2017
    Applicant: NEC Corporation
    Inventors: Kiyohiko TOYAMA, Masatoshi IJI, Shukichi TANAKA
  • Patent number: 9550876
    Abstract: Disclosed is a polylactic acid resin composition having excellent bleed resistance and molecular weight retention ratio. A polylactic acid resin molded body is also disclosed. The polylactic acid resin composition contains a polylactic acid resin (a), a metal hydrate (b) having an alkali metal-containing substance content of not more than 0.2% by mass, and a phosphazene derivative (c). The polylactic acid resin molded body is obtained by molding the polylactic acid resin composition. Specifically, a polylactic acid molded body can be produced by filling a melt of the polylactic acid resin composition into a mold at a temperature in the range from glass transition temperature of said polylactic acid resin (a) to 110° C. and molding the melt therein.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: January 24, 2017
    Assignee: NEC CORPORATION
    Inventors: Yukihiro Kiuchi, Tsunenori Yanagisawa, Masatoshi Iji, Kazuhiko Inoue, Shin Serizawa
  • Patent number: 9512238
    Abstract: A cellulose resin produced by binding cardanol or a derivative thereof to cellulose or a derivative thereof with the use of a cellulose hydroxy group of the cellulose or a derivative thereof and the phenolic hydroxy group of the cardanol or a derivative thereof.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: December 6, 2016
    Assignee: NEC CORPORATION
    Inventors: Masatoshi Iji, Sungil Moon, Shukichi Tanaka, Hiroyuki Kai