Patents by Inventor Masahiko Arakawa

Masahiko Arakawa 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: 20230310706
    Abstract: A raw amniotic membrane placed in a processing tank (10) is continuously heated by a far-IR heater (14) provided in the processing tank (10). During a decompression operation in which the interior of the processing tank (10) is placed in a decompressed state, and a recompression operation in which the pressure in the decompressed interior of the processing tank (10) is raised slightly toward atmospheric pressure, the raw amniotic membrane is dried while the water molecules present therein are subjected to energy via microwave irradiation from a microwave irradiation device (30) provided in the processing tank (10). By repeating this multiple times, the amniotic membrane is dried while cells and tissue structures are maintained.
    Type: Application
    Filed: November 30, 2020
    Publication date: October 5, 2023
    Inventors: Jiro OBA, Toshiko YOSHIDA, Motonori OKABE, Chika SOKO, Masahiko ARAKAWA
  • Publication number: 20230293767
    Abstract: The present invention addresses the problem of providing a material as a scaffold used to prevent poor skin grafting when there is a defect in the perichondrium or periosteum or a defect in subcutaneous tissue. As a solution, there is provided a dry amniotic membrane manufactured according to a specific drying process. In more detail, a raw amniotic membrane placed in a processing tank (10) is continuously heated by a far-infrared heater (14) provided inside the processing tank (10), while performing a decompression operation where the interior of the processing tank (10) is placed in a decompressed state and irradiation of the raw amniotic membrane with microwaves from a microwave generating device (30) provided inside the processing tank (10) to apply energy to water molecules present inside the amniotic membrane and cause drying during a pressure recovery operation that slightly raises the pressure inside the depressurized processing tank (10) toward atmospheric pressure.
    Type: Application
    Filed: October 30, 2020
    Publication date: September 21, 2023
    Inventors: Michiro FUJISAKA, Hideo SHOJAKU, Shinsuke ITO, Toshiko YOSHIDA, Motonori OKABE, Chika SOKO, Masahiko ARAKAWA
  • Publication number: 20230293766
    Abstract: The present invention addresses the problem of providing a wound contact member (or “contact layer”) that directly promotes wound healing when continuously performing negative pressure wound therapy (NPWT). As a solution, there is provided dry amniotic membrane manufactured by a specified drying process, that is, raw amniotic membrane placed inside a processing tank (10) is continuously heated using an infrared heater (14) provided inside the processing tank (10) while performing a depressurization operation that places the processing tank in a depressurized state and irradiation of the raw amniotic membrane with microwaves from a microwave generating device (30) provided inside the processing tank (10) to apply energy to water molecules present inside the amniotic membrane and cause drying during a pressure recovery operation that slightly raises the pressure inside the depressurized processing tank (10) toward atmospheric pressure.
    Type: Application
    Filed: October 22, 2020
    Publication date: September 21, 2023
    Inventors: Kouji AMANO, Toshiko YOSHIDA, Motonori OKABE, Chika SOKO, Masahiko ARAKAWA
  • Publication number: 20220396779
    Abstract: An object is to develop technology for viral inactivation. As means for resolution, viruses are inactivated by irradiating various articles with microwaves.
    Type: Application
    Filed: January 26, 2021
    Publication date: December 15, 2022
    Inventors: Motonori OKABE, Toshiko YOSHIDA, Kyouko HAYASHI, Masahiko ARAKAWA
  • Publication number: 20210283306
    Abstract: An object is to provide a dried amniotic membrane that promotes regeneration of a tendon and a tendon sheath when a tendon injury has occurred and that reduces loss of the motor function of fingers of upper limbs and lower limbs due to tendon adhesion as a novel regeneration material.
    Type: Application
    Filed: August 30, 2019
    Publication date: September 16, 2021
    Inventors: Toshiko YOSHIDA, Motonori OKABE, Ryusuke OSADA, Mineyuki ZUKAWA, Masahiko ARAKAWA
  • Patent number: 9335238
    Abstract: The invention provides a method for forming tissue pieces which allows stable and accurate winding around a core rod in rolling a sheet-like tissue piece, and a device therefor. In the tissue pieces used as each tissue piece in a tissue array obtained by arranging the tissue pieces on a substrate in an array form, the method for forming a roll-shaped tissue piece 6 obtained by rolling a sheet-like tissue piece 8 is characterized by the facts that the sheet-like tissue piece 8 is produced by slicing a tissue block 5 obtained by embedding the tissues with an embedding medium, the sheet-like tissue piece 8 is placed on a mounting block 12, peeling means 13 which easily enables peeling of the tissue piece 8 from the mounting block 12 is applied between the mounting block 12 and the tissue piece 8, and the tissue piece 8 is wound around a core rod 11 while heating the tissue piece 8 on the mounting block 12.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: May 10, 2016
    Assignees: Sakura Seiki Co., Ltd., Sakura Finetek Japan Co., Ltd.
    Inventors: Yoshiaki Nakazawa, Masaki Takano, Masahiko Arakawa, Kohji Naritake
  • Patent number: 8932641
    Abstract: The present invention provides a dried amnion which is dried with maintaining tissues of a raw amnion and can be easily stored for a prolonged period of time. An amnion which is dried with maintaining cells and tissues of a raw amnion can be produced by repeating a pressure-reducing operation and a pressure-recovery operation several times, the pressure-reducing operation comprising continuously heating a raw amnion placed in a treatment vessel by a far-infrared heater provided in the treatment vessel and reducing the pressure of the inside of the treatment vessel, and the pressure-recovery operation comprising recovering the reduced pressure of the inside of the treatment vessel with heating the amnion by microwaves irradiated from a microwave heating apparatus provided outside of the treatment vessel, and the amnion is characterized by retaining basement membranes and connective tissues which are constituents of the raw amnion.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: January 13, 2015
    Assignee: Amnos Co., Ltd.
    Inventors: Toshio Nikaido, Toshiko Yoshida, Motonori Okabe, Ayaka Toda, Kiyotaka Kitagawa, Masahiko Arakawa
  • Patent number: 8835130
    Abstract: Tissue array production method enables even roll-shaped tissue pieces having various diameters to be steadily fixed to a substrate block is provided. In a method in which roll-shaped tissue pieces formed by rolling sheet-like tissue pieces in the shape of a roll are arranged on a substrate in an array form, a tissue array is produced by placing a holding member which holds a plurality of roll-shaped tissue pieces so that their axis directions are vertically directed in a container into which a melted embedding medium is poured for its accumulation, to hold the respective roll-shaped tissue pieces in the holding member; pouring the embedding medium into the container, to form a substrate block constituted so that the plurality of roll-shaped tissue pieces is arranged in the array form; and slicing the substrate block so that the roll-shaped tissue pieces are ring-shaped.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: September 16, 2014
    Assignees: Sakura Seiki Co., Ltd., Sakura Finetek Japan Co., Ltd.
    Inventors: Yoshiaki Nakazawa, Masaki Takano, Masahiko Arakawa, Kohji Naritake
  • Publication number: 20130122540
    Abstract: The invention provides a method for forming tissue pieces which allows stable and accurate winding around a core rod in rolling a sheet-like tissue piece, and a device therefor. In the tissue pieces used as each tissue piece in a tissue array obtained by arranging the tissue pieces on a substrate in an array form, the method for forming a roll-shaped tissue piece 6 obtained by rolling a sheet-like tissue piece 8 is characterized by the facts that the sheet-like tissue piece 8 is produced by slicing a tissue block 5 obtained by embedding the tissues with an embedding medium, the sheet-like tissue piece 8 is placed on a mounting block 12, peeling means 13 which easily enables peeling of the tissue piece 8 from the mounting block 12 is applied between the mounting block 12 and the tissue piece 8, and the tissue piece 8 is wound around a core rod 11 while heating the tissue piece 8 on the mounting block 12.
    Type: Application
    Filed: July 26, 2011
    Publication date: May 16, 2013
    Applicants: Sakura Finetek Japan Co., Ltd., Sakura Seiki Co., Ltd.
    Inventors: Yoshiaki Nakazawa, Masaki Takano, Masahiko Arakawa, Kohji Naritake
  • Publication number: 20130115652
    Abstract: A tissue array production method which enables even roll-shaped tissue pieces having various diameters to be steadily fixed to a substrate block is provided. In the tissue array production method in which roll-shaped tissue pieces 6 formed by rolling sheet-like tissue pieces 8 in the shape of a roll are arranged on a substrate in an array form, the tissue array is produced by placing a holding member 16 which holds a plurality of roll-shaped tissue pieces 6 so that their axis directions are vertically directed in a container 10 into which a melted embedding medium is poured for its accumulation, to hold the respective roll-shaped tissue pieces 6 in the holding member 16; by pouring the embedding medium into the container 10, to form a substrate block 40 constituted so that the plurality of roll-shaped tissue pieces 6 is arranged in the array form; and by slicing the substrate block 40 so that the roll-shaped tissue pieces 6 are ring-shaped, to place the sliced pieces on the substrate.
    Type: Application
    Filed: July 26, 2011
    Publication date: May 9, 2013
    Applicants: Sakura Finetek Japan Co., Ltd., Sakura Seiki Co., Ltd.
    Inventors: Yoshiaki Nakazawa, Masaki Takano, Masahiko Arakawa, Kohji Naritake
  • Publication number: 20090258082
    Abstract: The present invention provides a dried amnion which is dried with maintaining tissues of a raw amnion and can be easily stored for a prolonged period of time. An amnion which is dried with maintaining cells and tissues of a raw amnion can be produced by repeating a pressure-reducing operation and a pressure-recovery operation several times, the pressure-reducing operation comprising continuously heating a raw amnion placed in a treatment vessel by a far-infrared heater provided in the treatment vessel and reducing the pressure of the inside of the treatment vessel, and the pressure-recovery operation comprising recovering the reduced pressure of the inside of the treatment vessel with heating the amnion by microwaves irradiated from a microwave heating apparatus provided outside of the treatment vessel, and the amnion is characterized by retaining basement membranes and connective tissues which are constituents of the raw amnion.
    Type: Application
    Filed: August 18, 2006
    Publication date: October 15, 2009
    Inventors: Toshio Nikaido, Toshiko Yoshida, Motonori Okabe, Ayaka Toda, Kiyotaka Kitagawa, Masahiko Arakawa
  • Patent number: 7503245
    Abstract: The method for manufacturing a tissue section, which is used for a sample for observation by a microscope, comprises the steps of slicing an organism specimen (12), whose form has been fixed by freezing or by using an embedding agent, along a slicing surface, characterized by: adjusting a distance between the slicing surface of the organism specimen (12) and one side of a tape (32) and a temperature difference between the organism specimen (12) and the tape (32) when the slicing of the organism specimen (12) is started, thereby a tip part of the tissue section (16) curling to the outside of the slicing surface of the organism specimen (12) is allowed to adhesively abut on one side of the tape (32) running apart from the slicing surface of the organism specimen (12); and running the tape (32) at a speed in synchronism with a slicing speed of the tissue section (16) after the tip part of the tissue section (16) is allowed to adhesively abut on the one side of the tape (32), thereby the entire tissue section (16
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: March 17, 2009
    Assignee: Sakura Seiki Co., Ltd.
    Inventors: Kazuo Miyazawa, Iwao Kuroiwa, Masahiko Arakawa, Akira Yanagimachi
  • Patent number: 6911774
    Abstract: An electroluminescent display device includes an anode, a cathode and a light emitting layer disposed between the anode and the cathode. The display device also includes a substrate allowing light from the light emitting layer to pass through itself and an ultraviolet protection film disposed in an optical path of the light passing through the substrate. Retardation films and polarizers used in conventional electroluminescent display devices are replaced by the ultraviolet protection film with respect to reducing the effect of ultraviolet rays on the degradation of the display characteristics.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: June 28, 2005
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Masahiko Arakawa, Ryuji Nishikawa
  • Publication number: 20050126311
    Abstract: The method for manufacturing a tissue section, which is used for a sample for observation by a microscope, comprises the steps of slicing an organism specimen (12), whose form has been fixed by freezing or by using an embedding agent, along a slicing surface, characterized by: adjusting a distance between the slicing surface of the organism specimen (12) and one side of a tape (32) and a temperature difference between the organism specimen (12) and the tape (32) when the slicing of the organism specimen (12) is started, thereby a tip part of the tissue section (16) curling to the outside of the slicing surface of the organism specimen (12) is allowed to adhesively abut on one side of the tape (32) running apart from the slicing surface of the organism specimen (12); and running the tape (32) at a speed in synchronism with a slicing speed of the tissue section (16) after the tip part of the tissue section (16) is allowed to adhesively abut on the one side of the tape (32), thereby the entire tissue section (16
    Type: Application
    Filed: March 26, 2003
    Publication date: June 16, 2005
    Inventors: Kazuo Miyazawa, Iwao Kuroiwa, Masahiko Arakawa, Akira Yanagimachi
  • Publication number: 20030230971
    Abstract: An electroluminescent display device includes an anode, a cathode and a light emitting layer disposed between the anode and the cathode. The display device also includes a substrate allowing light from the light emitting layer to pass through itself and an ultraviolet protection film disposed in an optical path of the light passing through the substrate. Retardation films and polarizers used in conventional electroluminescent display devices are replaced by the ultraviolet protection film with respect to reducing the effect of ultraviolet rays on the degradation of the display characteristics.
    Type: Application
    Filed: March 31, 2003
    Publication date: December 18, 2003
    Applicant: Sanyo Electric Co., Ltd.
    Inventors: Masahiko Arakawa, Ryuji Nishikawa