Patents by Inventor Shigeaki Ohtani

Shigeaki Ohtani 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: 11051930
    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: Grant
    Filed: May 10, 2019
    Date of Patent: July 6, 2021
    Assignee: FUJIFILM Corporation
    Inventors: Yusuke Mochizuki, Kentaro Nakamura, Shigeaki Ohtani, Naohiro Matsunaga, Ryuta Takegami
  • Patent number: 11045587
    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: Grant
    Filed: May 10, 2019
    Date of Patent: June 29, 2021
    Assignee: FUJIFILM Corporation
    Inventors: Yusuke Mochizuki, Kentaro Nakamura, Shigeaki Ohtani, Naohiro Matsunaga, Ryuta Takegami
  • Publication number: 20200353115
    Abstract: A medical instrument of the present invention includes a hydrophilic processed portion on at least a portion of an outer surface of the instrument. The hydrophilic processed portion contains a hydrophilic polymer and an antibacterial agent, and a water contact angle of a surface of the hydrophilic processed portion is equal to or smaller than 30°. Provided that a silver content per unit area in the hydrophilic processed portion is P, and a silver ion amount per unit area measured by an extraction test described below is Q, P and Q satisfy the relationships of Formula (1) and Formula (2) shown below. Accordingly, the medical instrument has excellent antifogging properties and antibacterial properties and excellently retains the antibacterial properties. 6.0?P/Q??Formula (1) 15.0?Q??Formula (2) The unit of P is ng/cm2, and the unit of Q is ng/cm2.
    Type: Application
    Filed: July 22, 2020
    Publication date: November 12, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Michihiro SHIBATA, Hideo Nagasaki, Fumito Nariyuki, Setsuko Shiratsuchi, Shigeaki Ohtani, Norihiro Omae, Haruyasu Nakatsugawa
  • 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: 20190262490
    Abstract: An object of the invention is to provide particles that have excellent deodorizing properties but do not easily settle down in a case in which the particles are applied to a dispersion liquid. Another object of the invention is to provide a dispersion liquid and a film, both using the particles; a deodorizing material including the particles, the dispersion liquid, or the film; and a wet wiper and a spray, both including the dispersion liquid. A composite particle of the invention includes a polymer particle; and at least one kind of inorganic particle selected from the group consisting of metals and metal oxides, the inorganic particle being supported on the surface of the polymer particle, in which the inorganic particles have an average particle diameter of less than 100 nm.
    Type: Application
    Filed: May 14, 2019
    Publication date: August 29, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Mitsumasa HAMANO, Tadashi ITO, Naohiro MATSUNAGA, Shigeaki OHTANI
  • 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
  • Patent number: 10219962
    Abstract: The present invention provides an incubator hood having a hydrophilized portion on at least a part of its inner surface, the hydrophilized portion containing a hydrophilic polymer and an antibacterial agent, and a surface of the hydrophilized portion having a water contact angle of up to 30°, and also provides an incubator having the incubator hood as well as a hydrophilic sheet and a hydrophilic antibacterial film for use in forming the hydrophilized portion on the incubator hood. Thus the present invention provides an incubator hood, an incubator, a hydrophilic sheet and a hydrophilic antibacterial film that have excellent antifogging properties and antibacterial properties and can suppress the growth of bacteria.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: March 5, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Fumito Nariyuki, Toshiyuki Nabeta, Michihiro Shibata, Hideo Nagasaki, Setsuko Shiratsuchi, Shigeaki Ohtani
  • Publication number: 20180140750
    Abstract: A medical instrument of the present invention includes a hydrophilic processed portion on at least a portion of an outer surface of the instrument. The hydrophilic processed portion contains a hydrophilic polymer and an antibacterial agent, and a water contact angle of a surface of the hydrophilic processed portion is equal to or smaller than 30°. Provided that a silver content per unit area in the hydrophilic processed portion is P, and a silver ion amount per unit area measured by an extraction test described below is Q, P and Q satisfy the relationships of Formula (1) and Formula (2) shown below. Accordingly, the medical instrument has excellent antifogging properties and antibacterial properties and excellently retains the antibacterial properties. 6.0?P/Q??Formula (1) 15.05?Q??Formula (2) The unit of P is ng/cm2, and the unit of Q is ng/cm2.
    Type: Application
    Filed: January 19, 2018
    Publication date: May 24, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Michihiro SHIBATA, Hideo NAGASAKI, Fumito NARIYUKI, Setsuko SHIRATSUCHI, Shigeaki OHTANI, Norihiro OMAE, Haruyasu NAKATSUGAWA
  • Publication number: 20160030616
    Abstract: The present invention provides an incubator hood having a hydrophilized portion on at least a part of its inner surface, the hydrophilized portion containing a hydrophilic polymer and an antibacterial agent, and a surface of the hydrophilized portion having a water contact angle of up to 30°, and also provides an incubator having the incubator hood as well as a hydrophilic sheet and a hydrophilic antibacterial film for use in forming the hydrophilized portion on the incubator hood. Thus the present invention provides an incubator hood, an incubator, a hydrophilic sheet and a hydrophilic antibacterial film that have excellent antifogging properties and antibacterial properties and can suppress the growth of bacteria.
    Type: Application
    Filed: July 28, 2015
    Publication date: February 4, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Fumito NARIYUKI, Toshiyuki NABETA, Michihiro SHIBATA, Hideo NAGASAKI, Setsuko SHIRATSUCHI, Shigeaki OHTANI
  • Patent number: 8460849
    Abstract: A heat-sensitive transfer image-receiving sheet, having, on a transparent support, a lenticular lens and at least one receptor layer in which the heat-sensitive transfer image-receiving sheet has a subbing layer which contains a resin that is identical with at least one resin constituting the lenticular lens, on the side of the transparent support opposite to the side on which the lenticular lens is provided, and the heat-sensitive transfer image-receiving sheet has a receptor layer containing a latex polymer on the subbing layer.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: June 11, 2013
    Assignee: FUJIFILM Corporation
    Inventors: Shigeaki Ohtani, Takashi Shimizu
  • Patent number: 8445173
    Abstract: A method of producing a heat-sensitive transfer image-receiving sheet, having the steps of: conveying a transparent support by web handling; providing at least one receptor layer on the transparent support; and drying the heat-sensitive transfer image-receiving sheet, in which the at least one receptor layer contains a latex polymer having a weighted average glass transition temperature of 30° C. or more, the heat-sensitive transfer image-receiving sheet is dried at a temperature that is higher than the weighted average glass transition temperature by 30° C. or more, and the heat-sensitive transfer image-receiving sheet has a lenticular lens on the side of the transparent support opposite to the side on which the receptor layer is provided.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: May 21, 2013
    Assignee: Fujifilm Corporation
    Inventors: Shigeaki Ohtani, Takashi Shimizu
  • Patent number: 8379068
    Abstract: A method of forming an image, having the steps of: superposing a heat-sensitive transfer sheet on a heat-sensitive transfer image-receiving sheet having a lenticular lens and at least one receptor layer on a transparent support; and applying thermal energy in accordance with image signals from a thermal head, wherein the heat-sensitive transfer image-receiving sheet has a subbing layer which contains a resin that is identical with at least one resin constituting the lenticular lens, on the side of the transparent support opposite to the side on which the lenticular lens is provided, wherein the heat-sensitive transfer image-receiving sheet has the receptor layer containing a latex polymer on the subbing layer and a spherical indenter hardness after the subbing layer and the receptor layer are provided is less than that of the transparent support itself, and wherein the thermal head has a specific length.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: February 19, 2013
    Assignee: Fujifilm Corporation
    Inventors: Shigeaki Ohtani, Takashi Shimizu, Ryo Imai
  • Publication number: 20110200934
    Abstract: A method of producing a heat-sensitive transfer image-receiving sheet, having the steps of: conveying a transparent support by web handling; providing at least one receptor layer on the transparent support; and drying the heat-sensitive transfer image-receiving sheet, in which the at least one receptor layer contains a latex polymer having a weighted average glass transition temperature of 30° C. or more, the heat-sensitive transfer image-receiving sheet is dried at a temperature that is higher than the weighted average glass transition temperature by 30° C. or more, and the heat-sensitive transfer image-receiving sheet has a lenticular lens on the side of the transparent support opposite to the side on which the receptor layer is provided.
    Type: Application
    Filed: February 17, 2011
    Publication date: August 18, 2011
    Applicant: FUJIFILM CORPORATION
    Inventors: Shigeaki OHTANI, Takashi SHIMIZU
  • Publication number: 20110157293
    Abstract: A method of forming an image, having the steps of: superposing a heat-sensitive transfer sheet on a heat-sensitive transfer image-receiving sheet having a lenticular lens and at least one receptor layer on a transparent support; and applying thermal energy in accordance with image signals from a thermal head, wherein the heat-sensitive transfer image-receiving sheet has a subbing layer which contains a resin that is identical with at least one resin constituting the lenticular lens, on the side of the transparent support opposite to the side on which the lenticular lens is provided, wherein the heat-sensitive transfer image-receiving sheet has the receptor layer containing a latex polymer on the subbing layer and a spherical indenter hardness after the subbing layer and the receptor layer are provided is less than that of the transparent support itself, and wherein the thermal head has a specific length.
    Type: Application
    Filed: December 20, 2010
    Publication date: June 30, 2011
    Applicant: FUJIFILM CORPORATION
    Inventors: Shigeaki OHTANI, Takashi SHIMIZU, Ryo IMAI
  • Patent number: 7948585
    Abstract: An inkjet ink for color filter having fine pigment particles formed with a size in the order of nanometer dispersed in a medium containing a polymerizable monomer and/or a polymerizable oligomer, a color filter using the ink, methods of producing them, and a liquid crystal display device using them.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: May 24, 2011
    Assignee: Fujifilm Corporation
    Inventors: Shigeaki Ohtani, Minoru Maeda
  • Publication number: 20110064895
    Abstract: A heat-sensitive transfer image-receiving sheet, having, on a transparent support, a lenticular lens and at least one receptor layer in which the heat-sensitive transfer image-receiving sheet has a subbing layer which contains a resin that is identical with at least one resin constituting the lenticular lens, on the side of the transparent support opposite to the side on which the lenticular lens is provided, and the heat-sensitive transfer image-receiving sheet has a receptor layer containing a latex polymer on the subbing layer.
    Type: Application
    Filed: September 15, 2010
    Publication date: March 17, 2011
    Applicant: FUJIFILM CORPORATION
    Inventors: Shigeaki OHTANI, Takashi SHIMIZU
  • Publication number: 20100220268
    Abstract: An inkjet ink for color filter having fine pigment particles formed with a size in the order of nanometer dispersed in a medium containing a polymerizable monomer and/or a polymerizable oligomer, a color filter using the ink, methods of producing them, and a liquid crystal display device using them.
    Type: Application
    Filed: February 20, 2007
    Publication date: September 2, 2010
    Inventors: Shigeaki Ohtani, Minoru Maeda
  • Publication number: 20070247711
    Abstract: A method of producing an optical film comprising at least two ionizing radiation-curing layers on a transparent substrate, the method comprising: Step 1 of irradiating a layer A, which comprises two or more kinds of polymerization initiators having different absorption ends at a longer wavelength side in wavelength range of sensitivity to which they are sensitive, with an ionizing radiation having a wavelength to which at least one kind (a) of the polymerization initiators is not substantially sensitive and at least one kind (b) of the polymerization initiators is sensitive; and Step 2 of spreading a coating solution for layer B comprising at least one polymerization initiator (c) over the layer A after Step A and then irradiating the coating solution for layer B with an ionizing radiation having a wavelength to which the polymerization initiators (a) and (c) are sensitive.
    Type: Application
    Filed: August 30, 2005
    Publication date: October 25, 2007
    Applicant: FUJIFILM Corporation
    Inventors: Shigeaki Ohtani, Yuuichi Fukushige
  • Publication number: 20070236631
    Abstract: An antireflection film is provided with a transparent support, which has a light-diffusing layer and a low refractive index layer on the transparent support, wherein the light-diffusing layer has an inner haze value of 30 to 60% and a surface haze value of 1% or less, and the antireflection film has an average reflectance of 2.5% or less at a wavelength of 450 to 650 nm.
    Type: Application
    Filed: August 31, 2004
    Publication date: October 11, 2007
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Shigeaki Ohtani, Eiichi Kato
  • Publication number: 20070206283
    Abstract: To provide a production method of an antireflection film excellent in the scratch resistance while having sufficiently high antireflection performance; an antireflection film obtained by the production method; and a polarizing plate and an image display device each comprising the antireflection film. A method for producing an antireflection film comprising a transparent substrate having thereon an antireflection layer comprising at least one layer, the production method comprising forming at least one layer on the transparent support by a layer forming method comprising the following steps (1) and (2): (1) a step of applying a coating layer on a transparent substrate, and (2) a step of curing the coating layer by irradiating ionizing radiation in an atmosphere having an oxygen concentration lower than the oxygen concentration in the air.
    Type: Application
    Filed: March 23, 2005
    Publication date: September 6, 2007
    Applicant: Fuji Photo Film Co., Ltd.
    Inventors: Shigeaki Ohtani, Yuichi Fukushige