Patents by Inventor Ryuta Takegami

Ryuta Takegami 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: 20200048597
    Abstract: An object of the present invention is to provide a separation substrate having a high megakaryocyte blocking rate and a high platelet permeation rate, and a cell separation filter and a method for producing a platelet which use the same. The separation substrate of the present invention is a separation substrate including non-woven fabric for separating a platelet from a cell suspension containing a megakaryocyte and the platelet, in which an average pore diameter of the separation substrate is 2.0 ?m to 15.0 ?m, and a thickness of the separation substrate is 10 ?m to 500 ?m.
    Type: Application
    Filed: October 21, 2019
    Publication date: February 13, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Toshiki TAKEI, Tadanori Yamada, Ryuta Takegami, Kuniyuki Kaminaga, Akihito Fukunaga, Kazuhide Kanemura
  • Publication number: 20190262509
    Abstract: According to the present invention, there is provided a membrane for immunoisolation, including a porous membrane that contains a polymer, in which Formulas (I) and (II) are satisfied for at least one surface of the porous membrane, B/A?0.7 (I) and A?0.015 (II) (in the formula, A represents a ratio of an N element to a C element on a surface of the membrane, and B represents a ratio of the N element to the C element at a depth of 30 nm from the surface of the membrane); a chamber for transplantation for enclosing a biological constituent therein, including the above-described membrane for immunoisolation on at least a part of a surface forming an inside and an outside of the chamber for transplantation; and a device for transplantation includes the above-described chamber for transplantation enclosing the above-described biological constituent therein. The membrane for immunoisolation of the present invention has a high bioaffinity.
    Type: Application
    Filed: May 10, 2019
    Publication date: August 29, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Yusuke MOCHIZUKI, Kentaro NAKAMURA, Shigeaki OHTANI, Naohiro MATSUNAGA, Ryuta TAKEGAMI
  • Publication number: 20190262122
    Abstract: According to the present invention, there are provided a membrane for immunoisolation, including: a porous membrane that contains a polymer, in which the porous membrane includes a layered compact portion where a pore diameter is the smallest within the membrane, and a pore diameter continuously increases in a thickness direction from the compact portion toward at least one surface of the porous membrane; a chamber for transplantation for enclosing a biological constituent therein, including the above-described membrane for immunoisolation on at least a part of a surface forming an inside and an outside of the chamber for transplantation; and a device for transplantation, including the above-described chamber for transplantation enclosing the biological constituent therein. In the membrane for immunoisolation of the present invention which can be manufactured at low costs, a deterioration in substance permeability is unlikely to occur.
    Type: Application
    Filed: May 10, 2019
    Publication date: August 29, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Yusuke MOCHIZUKI, Kentaro NAKAMURA, Shigeaki OHTANI, Naohiro MATSUNAGA, Ryuta TAKEGAMI
  • Publication number: 20190240641
    Abstract: A filtering medium for selective adsorption of blood components contains a cellulose acylate, and has a glass transition temperature of 126° C. or higher, an average through-hole diameter of 0.1 to 50 ?m, and a specific surface area of 1.0 to 100 m2/g.
    Type: Application
    Filed: April 12, 2019
    Publication date: August 8, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Kuniyuki Kaminaga, Ryuta Takegami
  • Patent number: 10317598
    Abstract: An optical film in which heat resistance or moisture resistance is excellent, and visibility is able to be sufficiently ensured. In the optical film used in a display apparatus including a polarizer, Re is 1,000 nm to 30,000 nm, and Rth is ?30,000 nm to ?1,000 nm. Further, a polarization plate including the optical film, a transparent conductive film including the optical film, a surface protection film including the optical film including the optical film, and a liquid crystal display apparatus including the optical film.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: June 11, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Ryuta Takegami, Naoyoshi Yamada
  • Publication number: 20190071819
    Abstract: A fiber composite includes a cellulose fiber and a metal, in which the cellulose fiber contains a cellulose acylate, at least a part of a surface of the cellulose fiber carries at least a part of the metal, a degree of crystallinity of the cellulose fiber is from 0% to 50%, an average fiber diameter of the cellulose fiber is from 1 nm to 1?m and an average fiber length of the cellulose fiber is from 1 mm to 1 m.
    Type: Application
    Filed: November 2, 2018
    Publication date: March 7, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Kuniyuki KAMINAGA, Ryuta TAKEGAMI, Yukihiro KATAI, Kosuke TANIGUCHI, Kazunori TAKAHASHI
  • Patent number: 10167370
    Abstract: A film includes a substrate including a cyclic olefin-based resin; and an easily adhesive layer adjacent to the substrate, in which a content of a fluorine-containing polymer in the easily adhesive layer is greater than 20 mass % with respect to a total mass of the easily adhesive layer. This film is used in a transparent conductive film, and this transparent conductive film is used in a touch panel. A method for producing a film includes laminating an easily adhesive layer by directly applying a coating liquid for forming an easily adhesive layer on a substrate including a cyclic olefin-based resin, in which a content of a fluorine-containing polymer in the coating liquid for forming the easily adhesive layer is greater than 20 mass % with respect to a total mass of the coating liquid for forming the easily adhesive layer.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: January 1, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Naomi Watanabe, Ryuta Takegami
  • Publication number: 20180327932
    Abstract: An object of the invention is to provide a nanofiber having excellent uniformity of the fiber diameter and capable of giving a satisfactory external appearance in a case in which the nanofiber is used to produce a nonwoven fabric, and a nonwoven fabric produced using the nanofiber. The nanofiber of the invention is a nanofiber containing a cellulose acylate having a degree of substitution of from 2.75 to 2.95.
    Type: Application
    Filed: July 25, 2018
    Publication date: November 15, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Ryuta TAKEGAMI, Kuniyuki KAMINAGA, Yukihiro KATAI, Kosuke TANIGUCHI
  • Patent number: 10067387
    Abstract: An image display device including a polarizer and a first optical film, in which the first optical film is arranged on a visible side from the polarizer, the first optical film has Re(589) of 3,000 nm to 30,000 nm and Rth(589) of ?30,000 nm to ?3,000 nm, an angle ?1 between a slow axis of the first optical film and an absorption axis of the polarizer is 45°±30°, and the image display device is a liquid crystal display device including a blue or ultraviolet LED, a fluorescent body, and a liquid crystal cell, or an organic EL display device, is able to suppress the occurrence of rainbow unevenness without darkening brightness at the time of being observed by mounting polarized sunglasses, and is able to suppress the occurrence of the rainbow unevenness without darkening the brightness at the time of being observed by mounting the polarized sunglasses even in a case where a film which has great optical anisotropy and is stretched in at least a monoaxial direction is further provided on the visible side of the im
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: September 4, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Naoyoshi Yamada, Ryuta Takegami
  • Publication number: 20180043301
    Abstract: Provided are a hygroscopic material having a transparent base material, a upper layer including a vinyl acetate resin, and a hygroscopic layer which is arranged between the base material and the upper layer to be adjacent to the upper layer and includes a moisture-absorbing agent which is an inorganic salt, and a resin, a method for producing the same, and a packaging material.
    Type: Application
    Filed: October 24, 2017
    Publication date: February 15, 2018
    Inventors: Toshihiro NAKATANI, Shin OZAWA, Ryuta TAKEGAMI, Takao ASAKURA
  • Patent number: 9515213
    Abstract: A back protective sheet for a solar cell module containing a polyester support that is biaxially stretched and then subjected to a thermal fixation treatment; and a polymer layer arranged to be in contact with at least one surface of the polyester support, wherein the polymer layer contains a binder having at least one functional group selected from a carboxyl group, a hydroxyl group, an amino group, a sulfonic acid group, and a carbonyl group; a pigment; and a crosslinking agent-derived structure, and the polyester support contains a polyester, a pigment, and an terminal blocking agent, has excellent adhesion between the support and the functional layer after wet heat aging.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: December 6, 2016
    Assignee: FUJIFILM CORPORATION
    Inventors: Ryuta Takegami, Naomi Yasuda, Makoto Fukuda
  • Publication number: 20160339678
    Abstract: A cyclic olefin-based film includes an undercoat layer on at least one surface of a layer consisting of a cyclic olefin-based resin, in which a content of an oxazoline group-containing polymer included in the undercoat layer is 2 mass % to 15 mass %.
    Type: Application
    Filed: August 5, 2016
    Publication date: November 24, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Ryuta TAKEGAMI, Naomi WATANABE
  • Publication number: 20160306230
    Abstract: An image display device including a polarizer and a first optical film, in which the first optical film is arranged on a visible side from the polarizer, the first optical film has Re(589) of 3,000 nm to 30,000 nm and Rth(589) of ?30,000 nm to ?3,000 nm, an angle ?1 between a slow axis of the first optical film and an absorption axis of the polarizer is 45°±30°, and the image display device is a liquid crystal display device including a blue or ultraviolet LED, a fluorescent body, and a liquid crystal cell, or an organic EL display device, is able to suppress the occurrence of rainbow unevenness without darkening brightness at the time of being observed by mounting polarized sunglasses, and is able to suppress the occurrence of the rainbow unevenness without darkening the brightness at the time of being observed by mounting the polarized sunglasses even in a case where a film which has great optical anisotropy and is stretched in at least a monoaxial direction is further provided on the visible side of the im
    Type: Application
    Filed: June 24, 2016
    Publication date: October 20, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Naoyoshi YAMADA, Ryuta TAKEGAMI
  • Publication number: 20160244580
    Abstract: A film includes a substrate including a cyclic olefin-based resin; and an easily adhesive layer adjacent to the substrate, in which a content of a fluorine-containing polymer in the easily adhesive layer is greater than 20 mass % with respect to a total mass of the easily adhesive layer. This film is used in a transparent conductive film, and this transparent conductive film is used in a touch panel. A method for producing a film includes laminating an easily adhesive layer by directly applying a coating liquid for forming an easily adhesive layer on a substrate including a cyclic olefin-based resin, in which a content of a fluorine-containing polymer in the coating liquid for forming the easily adhesive layer is greater than 20 mass % with respect to a total mass of the coating liquid for forming the easily adhesive layer.
    Type: Application
    Filed: May 3, 2016
    Publication date: August 25, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Naomi WATANABE, Ryuta TAKEGAMI
  • Publication number: 20160187544
    Abstract: An object of the present invention is to provide an optical film in which impact resistance and slipperiness of the film are excellent, and the occurrence of rainbow-like unevenness is suppressed. The present invention relates to an optical film containing a cyclic olefin-based resin and an elastomer, in which a content ratio of the elastomer is 5 mass % to 40 mass % with respect to the total mass of the optical film, and retardation Rth in a thickness direction in terms of a thickness of 40 ?m is 6 nm to 90 nm. The present invention further relates to a transparent conductive film, a touch panel, a surface protection film, and a display device.
    Type: Application
    Filed: March 10, 2016
    Publication date: June 30, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Naomi WATANABE, Naruhiko AONO, Ryuta TAKEGAMI
  • Publication number: 20160109632
    Abstract: Disclosed is an optical film in which heat resistance or moisture resistance is excellent, and visibility is able to be sufficiently ensured. In the optical film used in a display apparatus including a polarizer, Re is 1,000 nm to 30,000 nm, and Rth is ?30,000 nm to ?1,000 nm. Further, disclosed are a polarization plate including the optical film, a transparent conductive film including the optical film, a surface protection film including the optical film including the optical film, and a liquid crystal display apparatus including the optical film.
    Type: Application
    Filed: December 28, 2015
    Publication date: April 21, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Ryuta TAKEGAMI, Naoyoshi YAMADA
  • Patent number: 9315653
    Abstract: A polyester resin composition including: a polyester resin; a titanium compound derived from a catalyst; and a phosphorous compound, wherein formula (1): 0.10<Ti/P<0.20 is satisfied wherein Ti/P represents a mass content ratio of titanium element to phosphorus element in the polyester resin composition, and formula (2): 0.0090<?IV?0.0185 (dL/g/hr) is satisfied wherein ?IV represents an increase in an intrinsic viscosity of the polyester resin composition per hour under conditions of 225° C. and 50 Pa.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: April 19, 2016
    Assignee: FUJIFILM Corporation
    Inventor: Ryuta Takegami
  • Patent number: 9261732
    Abstract: The invention relates to an optical compensation film for IPS or FFS-mode liquid crystal display devices, having the tilt angle ?[°] not equal to zero, ?[°] being defined as ? giving the minimum value of retardation R[?] which is retardation measured for incident light coming in a direction tilted by ?° from a normal line relative to the film-plane, the direction being in a plane including the direction perpendicular to the in-plane slow axis thereof and the normal line; and having retardation along the thickness direction at a wavelength of 550 nm, Rth(550), not equal to zero.
    Type: Grant
    Filed: January 2, 2014
    Date of Patent: February 16, 2016
    Assignee: FUJIFILM Corporation
    Inventors: Hiroyuki Kaihoko, Tatsuho Nomura, Ryuta Takegami
  • Publication number: 20160027941
    Abstract: Disclosed is a multilayer film including a polyester support body; a first adhesive layer laminated on at least one surface of the polyester support body; and a second adhesive layer laminated on a side opposite to the polyester support body through the first adhesive layer, in which an average film thickness of the polyester support body is in a range of 50 ?m to 300 ?m, the first adhesive layer includes a modified polyolefin resin which is a copolymer of ethylene, (meth)acrylic acid ester, and acid anhydride, the second adhesive layer includes an olefin resin, and a sum of average film thicknesses of the first adhesive layer and the second adhesive layer is in a range of 0.001 times to 0.3 times the average film thickness of the polyester support body. The multilayer film is a multilayer film in which an adhesive layer having both adhesiveness to EVA and adhesiveness to a polyester support body is included, curling of the multilayer film is suppressed, and blocking is suppressed.
    Type: Application
    Filed: October 1, 2015
    Publication date: January 28, 2016
    Applicant: FUJIFILM Corporation
    Inventors: NAOMI WATANABE, RYUTA TAKEGAMI, SHIN OZAWA
  • Publication number: 20150210879
    Abstract: A laminated film containing a polyester film and a coating layer wherein the coating layer contains an acid-modified polyolefin resin and a basic compound having a boiling point of 200° C. or less, and, the polyester film contains a compound that is derived from the acid-modified polyolefin resin contained in the coating layer, can be produced by an in-line coating method. The laminated film is excellent in adhesion property and water resistance, and may be recycled and reused to suppress the cost for producing the laminated film.
    Type: Application
    Filed: April 10, 2015
    Publication date: July 30, 2015
    Applicant: FUJIFILM CORPORATION
    Inventor: Ryuta TAKEGAMI