Patents by Inventor Koji Furuya

Koji Furuya 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: 20210372655
    Abstract: An air-conditioning apparatus according to the present disclosure includes a heat medium circulation circuit, a heat-source-side device, and a voltage drop device. In the heat medium circulation circuit, a pump, an indoor heat exchanger, and a flow control device are connected by pipes to circulate the heat medium. The pump sends a heat medium that contains water or brine and transfers heat. The indoor heat exchanger causes heat exchange to be performed between the heat medium and an indoor air in an air-conditioned space. The flow control device controls a flow rate of the heat medium in the indoor heat exchanger. The heat-source-side device heats or cools the heat medium before the heat medium is sent to the indoor heat exchanger. The voltage drop device reduces a voltage that is applied to the pump based on a value of a current that is supplied to the pump, in association with a flow rate of the heat medium in the heat medium circulation circuit.
    Type: Application
    Filed: September 28, 2018
    Publication date: December 2, 2021
    Inventors: Koji FURUYA, Kimitaka KADOWAKI, Koji AZUMA, Yuji MOTOMURA, Yasushi OKOSHI
  • Publication number: 20210308633
    Abstract: The present disclosure provides a substrate for a liquid filter, including: a polyolefin microporous membrane, in which a mean flow pore size in a pore size distribution of the polyolefin microporous membrane measured by a half dry method according to gas-liquid phase substitution is from 1 nm to 50 nm, a calcium content in the polyolefin microporous membrane is 2,000 ppb or less, and a ratio of a tensile elongation in a longitudinal direction (MD) to a tensile elongation in a width direction (TD) perpendicular to the longitudinal direction (MD/TD tensile elongation ratio) of the polyolefin microporous membrane is from 0.47 to less than 0.96 or from more than 1.25 to 7.
    Type: Application
    Filed: July 23, 2019
    Publication date: October 7, 2021
    Applicant: TEIJIN LIMITED
    Inventors: Ayumi IWAI, Koji FURUYA, Yu NAGAO, Yoshikazu IKUTA
  • Publication number: 20210288341
    Abstract: A substrate for a composite membrane includes a microporous polyolefin membrane for carrying a hydrophilic resin compound within the pores of the microporous membrane wherein: the average pore diameter is 1 nm to 50 nm; the porosity is 50% to 78%; the membrane thickness is 1 ?m to 12 ?m; and, when a mixed solution of ethanol and water (volume ratio ½) is dripped onto a surface of the microporous polyolefin membrane which has not undergone hydrophilization treatment, the contact angle ?1 between the droplet and the surface is 0 to 90 degrees 1 second after the dripping, and the contact angle ?2 between the droplet and the surface is 0 to 70 degrees 10 minutes after the dripping, and the rate of change of the contact angle ((?1??2)/?1×100) is 10 to 50%.
    Type: Application
    Filed: May 31, 2017
    Publication date: September 16, 2021
    Applicant: TEIJIN LIMITED
    Inventors: Takeo YAMAGUCHI, Yuhei OSHIBA, Hidenori OHASHI, Jin TOMATSU, Koji FURUYA, Takao OHNO, Mami NANBU
  • Publication number: 20210164684
    Abstract: An air-conditioning apparatus includes: a heat-medium transfer device including a pump provided to transfer a heat medium that contains water or brine and transfers heat; a plurality of indoor units each of which includes an indoor heat exchanger provided to cause heat exchange to be performed between indoor air and the heat medium, and a flow control valve provided to adjust a flow rate of the heat medium that flows through the indoor heat exchanger, the plurality of indoor units being connected to the heat-medium transfer device by respective heat medium pipes; and a controller provided to control an opening degree of the flow control valve.
    Type: Application
    Filed: September 28, 2018
    Publication date: June 3, 2021
    Inventors: Naofumi TAKENAKA, Kimitaka KADOWAKI, Hiroki WASHIYAMA, Yuji MOTOMURA, Koji FURUYA, Jun NISHIO, Koji AZUMA
  • Publication number: 20190267655
    Abstract: To provide an electrolyte membrane that exhibits high proton conductivity even at low humidity, the electrolyte membrane includes a composite membrane including: a microporous polyolefin membrane that has an average pore diameter of 1 to 1000 nm and a porosity of 50 to 90% and that can be impregnated with a solvent having a surface free energy of 28 mJ/m2 or more, and an electrolyte containing a perfluorosulfonic acid polymer having an EW of 250 to 850 loaded into the pores of the microporous polyolefin membrane, wherein the membrane thickness of the composite membrane is 1 to 20 ?m.
    Type: Application
    Filed: May 31, 2017
    Publication date: August 29, 2019
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, TEIJIN LIMITED, KANAGAWA INSTITUTE OF INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Takeo YAMAGUCHI, Yuhei OSHIBA, Hidenori OHASHI, Jin TOMATSU, Koji FURUYA, Takao OHNO, Mami NANBU
  • Publication number: 20180280894
    Abstract: A substrate for a liquid filter that contains a polyolefin microporous membrane, in which a mean flow pore size dpp in a pore size distribution of the polyolefin microporous membrane measured by a half dry method according to gas-liquid phase substitution is from 1 nm to 20 nm, a mean flow pore size dLLP in a pore size distribution of the polyolefin microporous membrane measured by a half dry method according to liquid-liquid phase substitution is from 1 nm to 15 nm, a difference (dpp-dLLP) between the mean flow pore size dpp and the mean flow pore size dLLP is 12 nm or less, and a thickness of the polyolefin microporous membrane is from 4 to 25 ?m.
    Type: Application
    Filed: March 23, 2018
    Publication date: October 4, 2018
    Applicant: TEIJIN LIMITED
    Inventors: Ayumi IWAI, Koji FURUYA, Takao OHNO
  • Publication number: 20170151534
    Abstract: An embodiment of the invention provides a substrate for a liquid filter, the substrate including at least one A layer which is a microporous membrane-like layer containing a polyolefin, and at least one B layer which is a microporous membrane-like layer containing a polyolefin and a filler, the substrate having a bubble point of from 0.40 Mpa to 0.80 Mpa and a water permeation efficiency of from 1.0 mL/min·cm2 to 4.0 mL/min·cm2.
    Type: Application
    Filed: June 17, 2015
    Publication date: June 1, 2017
    Applicant: TEIJIN LIMITED
    Inventors: Toyomi FUKUDA, Koji FURUYA, Susumu HONDA
  • Publication number: 20090061192
    Abstract: There is provided a reflective sheet made of self-sustaining porous sheet which comprises inert particles and a polyolefin and which has a porosity of 30 to 95% and a reflectivity at a wavelength of 550 nm of 60 to 120%. This reflective sheet can be reduced in thickness and weight while retaining sufficient reflectivity.
    Type: Application
    Filed: April 11, 2006
    Publication date: March 5, 2009
    Applicant: TEIJIN LIMITED
    Inventors: Kei Mizutani, Takashi Kushida, Satoshi Kitazawa, Takao Ohno, Koji Furuya
  • Patent number: 7041344
    Abstract: A polyester film which is excellent in uniform light diffusibility, heat-resistant dimensional stability and luminance and suitable as a substrate of a light-diffusing plate of a liquid crystal display device. The film comprises a polyester containing polyethylene-2,6-naphthalene dicarboxylate as a main component and has a heat shrinkage in two directions perpendicular to each other in the surface of the film of not higher than 0.3% when heat-treated at 105° C. for 30 minutes, a dimensional change rate in two directions perpendicular to each other in the surface of the film under a stress of 0.37 MPa within a temperature range of 30 to 150° C. of not higher than 1.0%, a density of not lower than 1.350 g/cm3, a total light transmittance of not lower than 87%, a haze value of lower than 1.5% and a thickness of 50 to 150 ?m.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: May 9, 2006
    Assignee: Teijin Limited
    Inventors: Hiroshi Kusume, Koji Furuya
  • Patent number: 7022397
    Abstract: There is provided a membrane switch film comprising polyethylene 2, 6-naphthalenedicarboxylate as the major component and having excellent handling properties and durability, and particularly a film which is suitable for a membrane switch to be used in automobile interior devices which are potentially exposed to high temperature. The film is a membrane switch film having a refractive index in the range of 1.770–1.790 on both surfaces in either or both the film processing direction and the widthwise direction and an absolute value of no greater than 0.015 for the difference between the refractive indexes of both surfaces.
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: April 4, 2006
    Assignee: Teijin DuPont Films Japan Limited
    Inventors: Koji Furuya, Makoto Handa
  • Patent number: 7022407
    Abstract: A film which is a biaxially oriented film comprising polyethylene-2,6-naphthalenedicaboxylate as a principal component, having a thermal strain ratio RMD (150) in the machine direction of the film at a temperature of 150° C. is ?1.5%?RMD (150)?0.0% when the thermal strain ratio RMD (T) in the machine direction of the film at a temperature T° C. based on the length LMD (t) in the machine direction (MD) of the film at a temperature t° C. is defined by RMD(T)={[LMD(T)?LMD(35)]/LMD(35)}×100(%), excellent in insulation characteristics without lowering processing characteristics, especially the characteristics during hot-pressing and suitable as a dielectric for capacitors.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: April 4, 2006
    Assignee: Teijin Limited
    Inventors: Koji Furuya, Hiroshi Kusume, Makoto Handa
  • Publication number: 20050064140
    Abstract: There is provided a membrane switch film comprising polyethylene-2,6-naphthalenedicarboxylate as the major component and having excellent handling properties and durability, and particularly a film which is suitable for a membrane switch to be used in automobile interior devices which are potentially exposed to high temperature. The film is a membrane switch film having a refractive index in the range of 1.770-1.790 on both surfaces in either or both the film processing direction and the widthwise direction and an absolute value of no greater than 0.015 for the difference between the refractive indexes of both surfaces, or having a melting sub-peak temperature of between 220° C. and 250° C. as measured with a differential scanning calorimeter (DSC) and an absolute value of no greater than 6° C. for the difference between the melting sub-peak temperature on one surface and the melting sub-peak temperature on the other surface.
    Type: Application
    Filed: September 4, 2003
    Publication date: March 24, 2005
    Inventors: Koji Furuya, Makoto Handa
  • Patent number: 6761968
    Abstract: A biaxially oriented polyester film which has excellent productivity while ensuring a transferred image having excellent shape reproducibility and gradation and is particularly suitable for use as a base film for a heat-sensitive transfer ribbon. This film is formed by simultaneous biaxial orientation and contains 0.1 to 2 wt % of inert inorganic particles having an average particle diameter of 0.5 to 5 &mgr;m. This biaxially oriented polyester film has a value of 0.028 or less obtained by dividing the heat shrinkage factor (HS) (%) in a longitudinal direction at 200° C. by the F-5 value (N/mm2) (F5) in the longitudinal direction measured at normal temperature (about 23° C.) of the film.
    Type: Grant
    Filed: June 2, 2003
    Date of Patent: July 13, 2004
    Assignee: Teijin Limited
    Inventors: Hiroshi Kusume, Koji Furuya
  • Publication number: 20040028925
    Abstract: A biaxially oriented polyester film which has excellent productivity while ensuring a transferred image having excellent shape reproducibility and gradation and is particularly suitable for use as a base film for a heat-sensitive transfer ribbon. This film is formed by simultaneous biaxial orientation and contains 0.1 to 2 wt % of inert inorganic particles having an average particle diameter of 0.5 to 5 &mgr;m. This biaxially oriented polyester film has a value of 0.028 or less obtained by dividing the heat shrinkage factor (HS) (%) in a longitudinal direction at 200° C. by the F-5 value (N/mm2) (F5) in the longitudinal direction measured at normal temperature (about 23° C.) of the film.
    Type: Application
    Filed: June 2, 2003
    Publication date: February 12, 2004
    Inventors: Hiroshi Kusume, Koji Furuya
  • Publication number: 20030175537
    Abstract: A film which is a biaxially oriented film comprising polyethylene-2,6-naphthalenedicaboxylate as a principal component, having a thermal strain; ratio RMD (150) in the machine direction of the film at a temperature of 150° C. is −1.5%≦RMD (150)≦0.0% when the thermal strain ratio RMD (T) in the machine direction of the film at a temperature T° C. based on the length LMD (t) in the machine direction (MD) of the film at a temperature t ° C.
    Type: Application
    Filed: July 30, 2002
    Publication date: September 18, 2003
    Inventors: Koji Furuya, Hiroshi Kusume
  • Patent number: 6537657
    Abstract: A biaxially oriented polyester film for a thermal transfer ribbon characterized in that the biaxially oriented polyester film comprises a copolymerized polyethylene-2,6-naphthalate obtained by polycondensing 90 to 99.9 mole % of 2,6-naphthalenedicarboxylic acid and 0.1 to 10 mole % of isophthalic acid as dicarboxylic acid component, and 97 to 100 mole % of ethylene glycol component and 0 to 30 mole % of diethylene glycol component as diol component, the alternating current volume resistivity of the molten product of the film is 66×108 &OHgr;cm or less, the plane orientation coefficient of the film is 0.230 or more and 0.275 or less, and the density of the film is 1.3450 g/cm3 or more.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: March 25, 2003
    Assignee: Teijin Limited
    Inventors: Shinya Watanabe, Koji Furuya
  • Patent number: 6525165
    Abstract: An aromatic polyester film, which comprises an aromatic polyester comprising 2,6-naphthalenedicarboxylic acid as the main dicarboxylic acid component and 1,3-propanediol as the main diol component and having a density of at least 1.310 g/cm3. A laminated film comprising another polyester layer can be formed from this aromatic polyester film. An aromatic polyester containing a small amount of a sulfonic acid phosphonium salt used as one of the aromatic polyesters forming this laminated film is excellent in electrostatic casting properties and resistance to the contamination of an electrostatic wire, and an aromatic polyester containing an inorganic anti-fungus agent is used for antifungal application.
    Type: Grant
    Filed: January 3, 2001
    Date of Patent: February 25, 2003
    Assignee: Teijin Limited
    Inventors: Ryoji Tsukamoto, Takafumi Kudo, Masahiko Kosuge, Tomokatsu Ura, Hideshi Kurihara, Shinichi Kawai, Shinya Watanabe, Koji Furuya, Makoto Handa, Kenji Suzuki
  • Publication number: 20020146518
    Abstract: A polyester film which is excellent in uniform light diffusibility, heat-resistant dimensional stability and luminance and suitable as a substrate of a light-diffusing plate of a liquid crystal display device. The film comprises a polyester containing polyethylene-2,6-naphthalene dicarboxylate as a main component and has a heat shrinkage in two directions perpendicular to each other in the surface of the film of not higher than 0.3% when heat-treated at 105° C. for 30 minutes, a dimensional change rate in two directions perpendicular to each other in the surface of the film under a stress of 0.37 MPa within a temperature range of 30 to 150° C. of not higher than 1.0%, a density of not lower than 1.350 g/cm3, a total light transmittance of not lower than 87%, a haze value of lower than 1.5% and a thickness of 50 to 150 &mgr;m.
    Type: Application
    Filed: February 12, 2002
    Publication date: October 10, 2002
    Inventors: Hiroshi Kusume, Koji Furuya
  • Patent number: 6432509
    Abstract: A composite film for a film condenser, which comprises a biaxially oriented film made of polyethylene-2,6-naphthalenedicarboxylate as a main polymer component and an electrically conductive metal thin layer formed on the surface of the biaxially oriented film, wherein the number of flyspecks having an average diameter of 60 &mgr;m or greater in the surface of said biaxially oriented film is 20/m2 or less and the number of portions failing to satisfy a dielectric breakdown voltage of 200 V/&mgr;m (electrical insulation defects) in said composite film is 20/m2 or less, and a biaxially oriented film therefor. According to the present invention, there is provided a high-quality composite film for a film condenser, which has excellent physical properties and electric characteristics. Further, there is provided a very thin biaxially oriented film excellent in processability and surface properties and usable for the composite film.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: August 13, 2002
    Assignee: Teijin Limited
    Inventors: Koji Furuya, Shinya Watanabe, Hiroshi Kusume, Akira Kameoka
  • Patent number: 6355345
    Abstract: A laminate film for preventing glass from shattering, which comprises: (A) a biaxially oriented polyester film of a copolyester containing ethylene-2,6-naphthalenedicarboxylate recurring units in an amount of at least 80 mol % of all recurring units, (B) an adhesive coating film on at least one side of the above biaxially oriented polyester film, (C) a hard coat layer on the above adhesive coating film, and (D) an antireflection layer on the above hard coat layer. This laminate film has not only excellent adhesive properties, surface hardness and abrasion resistance but also sufficient transparency, antireflection property and glass shatterproof performance.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: March 12, 2002
    Assignee: Teijin Limited
    Inventors: Koji Furuya, Shinya Watanabe, Shinichi Kawai, Kenji Suzuki