Patents by Inventor Hiroji Kojima

Hiroji Kojima 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: 11760072
    Abstract: A multilayer film having a multi-layer structure unit which is a 51-layered or more multiple layer formed by alternately layering a layer (A layer) a main component of which is a polyester resin (resin A) having a dicarboxylic component and a diol component, and a layer (B layer) a main component of which is a thermoplastic resin (resin B) different from the resin A in optical properties; wherein at least one surface of the multi-layer structure unit has a refractive index of 1.68 or more and 1.80 or less, wherein the surface has a critical load of 15 mN or less at 100° C. in a scratch test, and wherein the multilayer film has at least one reflection bandwidth having a reflectance of 30% or more continuous over a wavelength width of 20 nm or more in a profile of reflectance measured on at least one surface side of the multi-layer structure unit.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: September 19, 2023
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Yoshihiro Masuda, Shigeru Aoyama, Jun Sakamoto, Hiroji Kojima
  • Patent number: 11383498
    Abstract: The present invention provides a laminate film and a display member including the laminate film, which are excellent in visibility of external information such as scenery and displayability of information from a projection member, and are also excellent in color tone reproducibility. The laminate film includes a laminate of 50 or more alternately arranged layers of a plurality of different thermoplastic resins, the laminate film having a transmittance of light incident perpendicularly to a film surface of 50% or more, the laminate film satisfying a relationship of R20?R40<R70, wherein R20, R40, and R70 are reflectances of a P-wave incident at angles of 20°, 40°, and 70°, respectively, to the normal to the film surface, the reflectance of R70 being 30% or more, reflected light of the P-wave incident at 70° to the normal to the film surface having a saturation of 20 or less.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: July 12, 2022
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Takayuki Uto, Wataru Gouda, Takahito Sakai, Hiroji Kojima, Yuji Matsuo
  • Publication number: 20210138772
    Abstract: The present invention provides a laminate film and a display member including the laminate film, which are excellent in visibility of external information such as scenery and displayability of information from a projection member, and are also excellent in color tone reproducibility. The laminate film includes a laminate of 50 or more alternately arranged layers of a plurality of different thermoplastic resins, the laminate film having a transmittance of light incident perpendicularly to a film surface of 50% or more, the laminate film satisfying a relationship of R20?R40<R70, wherein R20, R40, and R70 are reflectances of a P-wave incident at angles of 20°, 40°, and 70°, respectively, to the normal to the film surface, the reflectance of R70 being 30% or more, reflected light of the P-wave incident at 70° to the normal to the film surface having a saturation of 20 or less.
    Type: Application
    Filed: April 5, 2019
    Publication date: May 13, 2021
    Applicant: Toray Industries, Inc.
    Inventors: Takayuki Uto, Wataru Gouda, Takahito Sakai, Hiroji Kojima, Yuji Matsuo
  • Patent number: 10850485
    Abstract: A polyester resin composition including an ionic liquid that can dissolve an acid component monomer and/or oligomers of a polyester terephthalate, and a copper element that exhibits a reduced amount of production of the acid component monomer and/or oligomers of the polyester. Examples of the ionic liquid include 1-butyl-3-methylimidazolium acetate, 1-butyl-3-methylimidazolium chloride and tetrabutyl ammonium bromide. In one polyester resin composition, the surface roughness Ra of a capture plate is less than 0.150 ?m, as measured when a sample of the polyester resin composition is melt at 300° C. for 60 minutes under a nitrogen atmosphere, quickly cooled and thermally treated at 220° C. for 8 hours to form scattered products which are then attached to the capture plate and a gelation ratio after a 6-hour melting treatment at 300° C. under an atmosphere with an oxygen concentration of 1% is 5% or less.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: December 1, 2020
    Assignee: Toray Industries, Inc.
    Inventors: Takahiro Motoshiromizu, Jun Sakamoto, Kouichi Dan, Hiroji Kojima, Mayumi Matsumoto, Ken Suzuki, Tomonori Kawakami
  • Publication number: 20200316927
    Abstract: A multilayer film having a multi-layer structure unit which is a 51-layered or more multiple layer formed by alternately layering a layer (A layer) a main component of which is a polyester resin (resin A) having a dicarboxylic component and a diol component, and a layer (B layer) a main component of which is a thermoplastic resin (resin B) different from the resin A in optical properties; wherein at least one surface of the multi-layer structure unit has a refractive index of 1.68 or more and 1.80 or less, wherein the surface has a critical load of 15 mN or less at 100° C. in a scratch test, and wherein the multilayer film has at least one reflection bandwidth having a reflectance of 30% or more continuous over a wavelength width of 20 nm or more in a profile of reflectance measured on at least one surface side of the multi-layer structure unit.
    Type: Application
    Filed: September 26, 2018
    Publication date: October 8, 2020
    Applicant: Toray Industries, Inc.
    Inventors: Yoshihiro Masuda, Shigeru Aoyama, Jun Sakamoto, Hiroji Kojima
  • Publication number: 20180126714
    Abstract: A polyester resin composition exhibits a reduced amount of production of the acid component monomer and/or oligomers of the polyester. In one polyester resin composition, the surface roughness Ra of a capture plate is less than 0.150 ?m, as measured when a sample of the polyester resin composition is melt at 300° C. for 60 minutes under a nitrogen atmosphere, quickly cooled and thermally treated at 220° C. for 8 hours to form scattered products which are then attached to the capture plate. In another polyester resin composition, the production rate of an acid component monomer and/or the production rate of oligomers is/are less than 0.70, as defined by formulas (I) and (II): Production rate of acid component monomer=(amount of produced acid component monomer)/(acid component monomer content)??(I) Production rate of oligomers=(amount of produced oligomers)/(oligomer content)??(II).
    Type: Application
    Filed: March 22, 2016
    Publication date: May 10, 2018
    Inventors: Takahiro Motoshiromizu, Jun Sakamoto, Kouichi Dan, Hiroji Kojima, Mayumi Matsumoto, Ken Suzuki, Tomonori Kawakami
  • Patent number: 9396836
    Abstract: A polyester composition contains polyester, a phosphoric acid and an alkali metal phosphate, a phosphorous element content P (mol/t) is 1.8 mol/t or more and 5.0 mol/t or less relative to the whole of the polyester composition. The polyester composition contains at least one metal element of Mn and Ca, any divalent metal element content other than Mn and Ca is 5 ppm or less, and when an alkali metal element content relative to the polyester composition is denoted by M1 (mol/t), and a total amount of Mn element content and Ca element content relative to the polyester composition is denoted by M2 (mol/t), a metal element content M (mol/t) in the polyester composition which is calculated by expression (i) below and the phosphorous element content P (mol/t) satisfy expression (ii): (i) M=M1/2+M2 and (ii) 1.1?M/P?3.0.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: July 19, 2016
    Assignee: Toray Industries, Inc.
    Inventors: Tadamasa Suzuki, Shigeru Aoyama, Hiroji Kojima, Kozo Takahashi
  • Patent number: 9273182
    Abstract: A process of producing a polyester composition includes carrying out an esterification reaction of a dicarboxylic acid component with a diol component, and then carrying out a polycondensation reaction, wherein the diol component is added twice or more during a time from completion of the esterification reaction until beginning the polycondensation reaction, and alkali metal phosphate is added with an amount of COOH terminal groups of an esterification reactant being not more than 150 eq/ton.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: March 1, 2016
    Assignee: Toray Industries, Inc.
    Inventors: Mayumi Matsumoto, Hiroji Kojima, Jun Sakamoto
  • Patent number: 9238710
    Abstract: The present invention is a composition containing a polyester resin containing at least an alicyclic dicarboxylic acid component and an alicyclic diol component, and it is a polyester resin composition which satisfies that a glass transition temperature is 65° C. or more and 90° C. or less, a refractive index at sodium D line is 1.500 or more and 1.570 or less, a titanium element content is 5 ppm or more and 500 ppm or less, a phosphorus element content is 50 ppm or more and 500 ppm or less and a gel fraction is 50% or less. By the present invention, it is possible to obtain a polyester resin composition having a low refractive index and photoelastic coefficient, and in which a thermally degraded foreign substance is reduced.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: January 19, 2016
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Hitoshi Yoshimura, Shoji Aono, Jun Sakamoto, Yuzo Shimizu, Hiroji Kojima
  • Patent number: 9056956
    Abstract: A polyethylene terephthalate composition includes a copolymer component having at least 3 functional groups in an amount of 0.01 mol % to 1.00 mol % with respect to ethylene terephthalate units, in which a ratio (Mw/Mn) between the weight average molecular weight and number average molecular weight of the polyethylene terephthalate composition is 5.0 to 8.0; an alkali metal compound in an amount of 1.0 mol/ton to 3.0 mol/ton in terms of alkali metal element; a phosphorus compound in an amount of 1.5 mol/ton to 5.0 mol/ton in terms of elemental phosphorus; and an o-chlorophenol insoluble matter in an amount of less than 0.5 wt %.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: June 16, 2015
    Assignee: Toray Industries, Inc.
    Inventors: Hiroji Kojima, Jun Sakamoto, Koichi Dan, Shigeru Aoyama
  • Patent number: 8889819
    Abstract: A method for producing a polyester resin composition includes conducting polyconensation via esterification or transesterification, wherein an alkali metal phosphate in an amount of 1.3 mol/ton to 3.0 mol/ton and phosphoric acid in an amount of 0.4 to 1.5 times (by mole) that of the alkali metal phosphate are added at a stage between the point of time when the esterication or transesterification has been substantially completed and the point of time when the intrinsic viscosity reaches 0.4. A polyester resin composition obtained by the process exhibits excellent long-term hydrolysis resistance and excellent mechanical characteristics.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: November 18, 2014
    Assignee: Toray Industries, Inc.
    Inventors: Hiroji Kojima, Jun Sakamoto, Mayumi Sunako
  • Patent number: 8779082
    Abstract: The invention relates to an improved linear microdialysis probe comprising a continuous length of flexible tubing (1) having at least one window (4) formed therein, said window covering at least one part of the circumference of the tubing, while the remaining part forms at least one unbroken connection between a first end of said tubing and a second end of said tubing, said ends adapted to be attached to an inlet for perfusion liquid and the other end forming an outlet for the dialysate, said at least one window (4) exposing a tubular semipermeable membrane (2).
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: July 15, 2014
    Assignee: TORAY Industries, Inc.
    Inventors: Hua Qi, Keisuke Honda, Kunihiro Morimoto, Jun Sakamoto, Hiroji Kojima
  • Publication number: 20140023841
    Abstract: A polyester composition contains polyester, a phosphoric acid and an alkali metal phosphate, a phosphorous element content P (mol/t) is 1.8 mol/t or more and 5.0 mol/t or less relative to the whole of the polyester composition. The polyester composition contains at least one metal element of Mn and Ca, any divalent metal element content other than Mn and Ca is 5 ppm or less, and when an alkali metal element content relative to the polyester composition is denoted by M1 (mol/t), and a total amount of Mn element content and Ca element content relative to the polyester composition is denoted by M2 (mol/t), a metal element content M (mol/t) in the polyester composition which is calculated by expression (i) below and the phosphorous element content P (mol/t) satisfy expression (ii): (i) M=M1/2+M2 and (ii) 1.1?M/P?3.0.
    Type: Application
    Filed: February 29, 2012
    Publication date: January 23, 2014
    Applicant: Toray Industries, Inc.
    Inventors: Tadamasa Suzuki, Shigeru Aoyama, Hiroji Kojima, Kozo Takahashi
  • Patent number: 8575254
    Abstract: A polylactic acid-based composition including a polylactic acid-based resin, a buffering agent; and/or a compound derived from the buffering agent.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: November 5, 2013
    Assignees: Toray Industries, Inc., Toray Fibers & Textiles Research Laboratories (China) Co., Ltd.
    Inventors: Gouhei Yamamura, Hiroji Kojima, Masahiro Kimura, Zhengzheng Lai, Bo Liu, Ruoyu Qiu, Tian Xia, Shunji Kono
  • Publication number: 20130253165
    Abstract: A process of producing a polyester composition includes carrying out an esterification reaction of a dicarboxylic acid component with a diol component, and then carrying out a polycondensation reaction, wherein the diol component is added twice or more during a time from completion of the esterification reaction until beginning the polycondensation reaction, and alkali metal phosphate is added with an amount of COOH terminal groups of an esterification reactant being not more than 150 eq/ton.
    Type: Application
    Filed: July 29, 2011
    Publication date: September 26, 2013
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Mayumi Matsumoto, Hiroji Kojima, Jun Sakamoto
  • Publication number: 20120208943
    Abstract: A polyethylene terephthalate composition includes a copolymer component having at least 3 functional groups in an amount of 0.01 mol % to 1.00 mol % with respect to ethylene terephthalate units, in which a ratio (Mw/Mn) between the weight average molecular weight and number average molecular weight of the polyethylene terephthalate composition is 5.0 to 8.0; an alkali metal compound in an amount of 1.0 mol/ton to 3.0 mol/ton in terms of alkali metal element; a phosphorus compound in an amount of 1.5 mol/ton to 5.0 mol/ton in terms of elemental phosphorus; and an o-chlorophenol insoluble matter in an amount of less than 0.5 wt %.
    Type: Application
    Filed: August 31, 2010
    Publication date: August 16, 2012
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Hiroji Kojima, Jun Sakamoto, Koichi Dan, Shigeru Aoyama
  • Publication number: 20110313102
    Abstract: A method for producing a polyester resin composition includes conducting polycondensation via esterification or transesterification, wherein an alkali metal phosphate in an amount of 1.3 mol/ton to 3.0 mol/ton and phosphoric acid in an amount of 0.4 to 1.5 times (by mole) that of the alkali metal phosphate are added at a stage between the point of time when the esterication or transesterification has been substantially completed and the point of time when the intrinsic viscosity reaches 0.4. A polyester resin composition obtained by the process exhibits excellent long-term hydrolysis resistance and excellent mechanical characteristics.
    Type: Application
    Filed: March 1, 2010
    Publication date: December 22, 2011
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Hiroji Kojima, Jun Sakamoto, Mayumi Sunako
  • Publication number: 20110028629
    Abstract: A polylactic acid-based composition including a polylactic acid-based resin, a buffering agent: and/or a compound derived from the buffering agent.
    Type: Application
    Filed: March 13, 2009
    Publication date: February 3, 2011
    Applicants: TORAY INDUSTRIES, INC., TORAY FIBERS & TEXTILES RESEARCH LABORATORIES (CHINA) CO., LTD.
    Inventors: Gouhei Yamamura, Hiroji Kojima, Masahiro Kimura, Zhengzheng Lai, Bo Liu, Ruoyu Qiu, Tian Xia, Shunji Kono
  • Publication number: 20100305296
    Abstract: The invention relates to an improved linear microdialysis probe comprising a continuous length of flexible tubing (1) having at least one window (4) formed therein, said window covering at least one pan of the circumference of the tubing, while the remaining part forms at least one unbroken connection between a first end of said tubing and a second end of said tubing, said ends adapted to be attached to an inlet for perfusion liquid and the other end forming an outlet for the dialysate, said at least one window (4) exposing a tubular semipermeable membrane (2).
    Type: Application
    Filed: December 21, 2006
    Publication date: December 2, 2010
    Applicant: TORAY INDUSTRIES INC.
    Inventors: Hua Qi, Keisuke Honda, Kunihiro Morimoto, Jun Sakamoto, Hiroji Kojima
  • Publication number: 20100178524
    Abstract: The present invention is a composition containing a polyester resin containing at least an alicyclic dicarboxylic acid component and an alicyclic diol component, and it is a polyester resin composition which satisfies that a glass transition temperature is 65° C. or more and 90° C. or less, a refractive index at sodium D line is 1.500 or more and 1.570 or less, a titanium element content is 5 ppm or more and 500 ppm or less, a phosphorus element content is 50 ppm or more and 500 ppm or less and a gel fraction is 50% or less. By the present invention, it is possible to obtain a polyester resin composition having a low refractive index and photoelastic coefficient, and in which a thermally degraded foreign substance is reduced.
    Type: Application
    Filed: September 5, 2007
    Publication date: July 15, 2010
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Hitoshi Yoshimura, Shoji Aono, Jun Sakamoto, Yuzo Shimizu, Hiroji Kojima