Patents by Inventor Hitoshi Karasawa

Hitoshi Karasawa 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: 20200103562
    Abstract: To provide an optical film having excellent visibility in a wide angle direction. An optical film including a polyimide-based resin and a polyamide-based resin and having a total light transmittance of 85% or more and a haze of 0.5% or less, in which, when a direction parallel to a machine direction in a plane of the optical film during production of the optical film is defined as an MD direction and a direction vertical to the machine direction is defined as a TD direction, for at least any one surface of the optical film, a first reflection image clarity value CMD in a direction inclined 60° in the MD direction from a vertical direction to the plane of the optical film and a second reflection image clarity value CTD in a direction inclined 60° in the TD direction from the vertical direction which are obtained when a slit width of an optical comb is 0.
    Type: Application
    Filed: September 17, 2019
    Publication date: April 2, 2020
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Kazuki DAIMATSU, Hitoshi FUKUI, Masayoshi KARASAWA
  • Publication number: 20200103694
    Abstract: To provide an optical film having excellent visibility in the wide angle direction. An optical film including at least one resin selected from the group consisting of a polyimide-based resin and a polyamide-based resin, wherein the optical film satisfies Formula (1): 0?Ts?0.35??(1) wherein Ts represents a scattered light ratio (%) and is defined as Ts=Td/Tt×100, Td and Tt represent a diffuse light transmittance (%) and a total light transmittance (%), measured in accordance with JIS K-7136, respectively.
    Type: Application
    Filed: September 17, 2019
    Publication date: April 2, 2020
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Kazuki DAIMATSU, Hitoshi FUKUI, Masayoshi KARASAWA
  • Publication number: 20200103712
    Abstract: To provide an optical film having excellent visibility in a wide angle direction. An optical film including at least one resin selected from the group consisting of a polyimide-based resin and a polyamide-based resin and having a total light transmittance of 85% or more and a haze of 0.5% or less, wherein when a direction parallel to a machine direction in a plane of the optical film during production of the optical film is defined as an MD direction and a direction vertical to the machine direction is defined as a TD direction, a first transmission image clarity value C60(MD) in a direction inclined 60° in the MD direction from a vertical direction to the plane of the optical film, a second transmission image clarity value C60(TD) in a direction inclined 60° in the TD direction from the vertical direction, and a third transmission image clarity value C0 of the vertical direction which are obtained when a width of an optical comb is 0.
    Type: Application
    Filed: September 17, 2019
    Publication date: April 2, 2020
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Kazuki DAIMATSU, Hitoshi FUKUI, Masayoshi KARASAWA
  • Patent number: 8517927
    Abstract: A medical instrument includes: an image pickup unit incorporated in a medical instrument body for picking up an image of the subject to be examined from an observation window; an airflow generating unit provided rotatably with respect to the medical instrument body so as to cover the image pickup unit by a covering unit having an opening formed therein, the airflow generating unit being configured to generate an airflow for preventing adherents from sticking to the observation window, by rotation of the covering unit; a fixing unit for indwelling and fixing the medical instrument body inside the subject to be examined; and a drive unit incorporated in the medical instrument body, for driving the airflow generation unit.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: August 27, 2013
    Assignee: Olympus Medical Systems Corp.
    Inventors: Daisuke Asada, Sho Nakajima, Hitoshi Karasawa
  • Patent number: 8475359
    Abstract: A medical apparatus according to the present invention is a medical apparatus used in a state in which the medical apparatus is led into a body and fixed. The medical apparatus includes: a fixing section that fixes the medical apparatus on a body wall in the body; an image pickup section that picks up an image of a subject in the body and is provided pivotably around a first axis; and a holding section that includes the fixing section and holds the image pickup section pivotably around a second axis different from the first axis. Therefore, the medical apparatus can change a photographing range and a visual field direction as desired to photograph the subject by performing magnified observation and photographing the subject from different directions without using a zoom function in the state in which the medical apparatus is fixed in a limited space in the body.
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: July 2, 2013
    Assignee: Olympus Medical Systems Corp.
    Inventors: Daisuke Asada, Hitoshi Karasawa, Sho Nakajima, Nobuyoshi Yazawa, Tsutomu Urakawa
  • Patent number: 8353820
    Abstract: A medical apparatus according to the present invention includes: an image pickup section including an observation window, the image pickup section being led into a body; a holding section that holds the image pickup section inside the body; a covering section that is connected to the holding section and covers the observation window to set the image pickup section in a non-photographable state; and a field-of-view control section that variably controls the covering of the observation window by the covering section and sets the image pickup section in a photographable state to allow the image pickup section to photograph a subject inside the body.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: January 15, 2013
    Assignee: Olympus Medical Systems Corp.
    Inventors: Hitoshi Karasawa, Sho Nakajima, Daisuke Asada, Nobuyoshi Yazawa
  • Patent number: 8317814
    Abstract: A medical device includes: a medical instrument introduced into a body cavity and having a contact portion that is fixed in contact with a wall within a body, and a wire; an extracorporeal device installed on a body surface and having a hole portion through which the wire can be inserted and removed, fixing mechanisms for fixing the wire inserted through the hole portion, and a housing that is fixed in contact with the body surface; and a pressure adjusting portion provided in one of the medical instrument and the extracorporeal device for maintaining a predetermined tensile force or more that is applied to the wire when the wire is fixed by the fixing mechanism with a body wall being sandwiched between the contact portion and the housing.
    Type: Grant
    Filed: January 7, 2009
    Date of Patent: November 27, 2012
    Assignee: Olympus Medical Systems Corp.
    Inventors: Hitoshi Karasawa, Sho Nakajima, Daisuke Asada, Keiji Handa
  • Patent number: 8267854
    Abstract: An endoscope system includes a camera for picking up an image inside a body cavity, a camera side magnet connected to the camera and a fixing magnet, for fixing the camera inside the body cavity by holding an abdominal wall from different surfaces of the abdominal wall, and a second CCU for controlling the camera.
    Type: Grant
    Filed: June 4, 2008
    Date of Patent: September 18, 2012
    Assignee: Olympus Medical Systems Corp.
    Inventors: Daisuke Asada, Keiji Handa, Hitoshi Karasawa
  • Patent number: 8237782
    Abstract: A medical instrument used by being introduced into a body and fixed thereto, includes a camera body provided with a fixing section to be fixed to a body wall in the body, an image pickup section incorporated in the camera body that picks up an image of an object to be examined in the body from an observation window formed in the camera body, a contamination removing section provided by being fixed to the camera body, a transparent cover member, an outer surface of which is in contact with the contamination removing section, movably disposed on the observation window and a drive section incorporated in the camera body that drives the cover member to make a sliding contact with the contamination removing section, and can thereby easily and reliably remove deposits stuck to the observation window and obtain a clear observation image even when deposits are being removed.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: August 7, 2012
    Assignee: Olympus Medical Systems Corp.
    Inventors: Hitoshi Karasawa, Sho Nakajima, Daisuke Asada, Nobuyoshi Yazawa
  • Publication number: 20120137970
    Abstract: Provided is a device for treating the inner surface of a cylinder barrel. A cover member (32) is provided, at the lower surface (59) thereof, with seal rings (54, 55, 56). The seal rings (54, 55, 56) are disposed concentrically about the center axis (63) of a cylinder barrel (43, 67). The lower ends of the seal rings (54, 55, 56) are disposed at different levels of height in such a manner that the farther away from the center axis (63), the higher the positions of the lower ends relative to the seal ring (54) closest to the center axis (63).
    Type: Application
    Filed: July 1, 2010
    Publication date: June 7, 2012
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Hiroyuki Naruse, Hitoshi Karasawa, Kenichi Yokoo
  • Patent number: 8182414
    Abstract: An endoscope system having a first image pickup device including at least one image pickup unit that is capable of picking up an image of an object, a second image pickup device including at least one image pickup unit, the second image pickup device being different from the first image pickup device, a retaining member being provided for retaining the second image pickup device in a body cavity, and including a camera cable that is connected to the second image pickup device and transmits an image pickup signal obtained by the second image pickup device, and a wire connected to the second image pickup device, a signal processing device that is provided outside the body cavity and processes image pickup signals obtained by the first image pickup device and the second image pickup device, and a display device that displays an image signal outputted from the signal processing device.
    Type: Grant
    Filed: June 4, 2008
    Date of Patent: May 22, 2012
    Assignee: Olympus Medical Systems Corp.
    Inventors: Keiji Handa, Hitoshi Karasawa, Daisuke Asada
  • Patent number: 8088065
    Abstract: A medical instrument includes an image pickup section incorporated in a medical instrument body and movably provided in the medical instrument body that picks up an image of the object to be examined from an observation window, a covering section movably provided at the medical instrument body so as to cover the observation window and in which an opening portion is formed, a drive section that drives the covering section or the image pickup section, and a control section that controls the drive section so as to drive the covering section or the image pickup section by synchronizing a timing for the image pickup section to pick up the object image with a timing at which the opening portion and the observation window match, and can thereby prevent sticking of deposits to the observation window and obtain a clear observation image.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: January 3, 2012
    Assignee: Olympus Medical Systems Corp.
    Inventors: Hitoshi Karasawa, Daisuke Asada, Sho Nakajima
  • Patent number: 7966897
    Abstract: A plating apparatus includes a plating tank for storing a plating liquid, and applies a magnetic alloy plating to a shaft-shaped member immersed in the plating liquid by using the shaft-shaped member as a cathode. The plating apparatus further includes a rotable member configured to rotate the shaft-shaped member as a rotary shaft; annular shielding tools mounted on the outer peripheral surface of the shaft-shaped member; a plating liquid discharge nozzle including plating liquid discharge ports which are provided to face the shaft-shaped member so as to avoid the shielding tools; and an anode provided around the shaft-shaped member and the plating liquid discharge nozzle.
    Type: Grant
    Filed: August 22, 2007
    Date of Patent: June 28, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventors: Nobuhiko Yoshimoto, Hitoshi Karasawa, Koji Kobayashi, Mizuho Doi, Hitoshi Harata
  • Publication number: 20110046445
    Abstract: A medical instrument for observing the interior of a subject to be examined has an image pickup unit for picking up an image of the subject to be examined from a transparent cover member incorporated in the medical instrument, disposes a multi-bladed fan outside an image-pickup field of view of the image pickup unit, generates an airflow to an airflow outlet that causes the airflow to flow from the inlet port to the vicinity of an observation window, prevents adherents such as dirt from sticking to the cover member, prevents the adherents from sticking to the observation window of the observation apparatus without obstructing the field of view, and can thereby obtain a clear observed image.
    Type: Application
    Filed: July 23, 2010
    Publication date: February 24, 2011
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Daisuke ASADA, Sho NAKAJIMA, Hitoshi KARASAWA
  • Publication number: 20110031219
    Abstract: A cylinder barrel inside surface treatment apparatus for providing a uniform treatment finish is disclosed. The treatment apparatus includes a pallet on which a cylinder block is placed with a gasket surface faced upward. A top opening of a cylinder barrel of the cylinder block is covered by a cover member having a concave portion communicating with the top opening. A nozzle having treatment solution spray holes is attached to the cover member. The treatment solution is sprayed toward a wall of the concave portion from the treatment solution spray holes and flows along the wall from a top end to a bottom end of the cylinder barrel inside surface.
    Type: Application
    Filed: August 5, 2010
    Publication date: February 10, 2011
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Hiroyuki NARUSE, Hitoshi Karasawa, Ryotaro Takada, Yoshimitsu Ogawa
  • Publication number: 20100249503
    Abstract: By including a camera body introduced into a body, an image pickup section incorporated in the camera body for picking up an image of an object, a transparent cover member movably disposed at the camera body that always covers an image taking side of the image pickup section irrespective of a moving position, a moving section that causes the cover member to move and a cleaning section disposed outside an image pickup range of the image pickup section that performs cleaning by jetting a fluid over the opposed surface part of the cover member moved to outside the image pickup range of the image pickup section, it is possible to always obtain a clear observation image without interfering with observation even when removing fogging, deposits such as dirt.
    Type: Application
    Filed: March 19, 2010
    Publication date: September 30, 2010
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Nobuyoshi YAZAWA, Daisuke ASADA, Sho NAKAJIMA, Hitoshi KARASAWA
  • Publication number: 20100249502
    Abstract: A medical instrument includes an image pickup section incorporated in a medical instrument body and movably provided in the medical instrument body that picks up an image of the object to be examined from an observation window, a covering section movably provided at the medical instrument body so as to cover the observation window and in which an opening portion is formed, a drive section that drives the covering section or the image pickup section, and a control section that controls the drive section so as to drive the covering section or the image pickup section by synchronizing a timing for the image pickup section to pick up the object image with a timing at which the opening portion and the observation window match, and can thereby prevent sticking of deposits to the observation window and obtain a clear observation image.
    Type: Application
    Filed: March 19, 2010
    Publication date: September 30, 2010
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Hitoshi KARASAWA, Daisuke ASADA, Sho NAKAJIMA
  • Publication number: 20100225753
    Abstract: A medical instrument used by being introduced into a body and fixed thereto, includes a camera body provided with a fixing section to be fixed to a body wall in the body, an image pickup section incorporated in the camera body that picks up an image of an object to be examined in the body from an observation window formed in the camera body, a contamination removing section provided by being fixed to the camera body, a transparent cover member, an outer surface of which is in contact with the contamination removing section, movably disposed on the observation window and a drive section incorporated in the camera body that drives the cover member to make a sliding contact with the contamination removing section, and can thereby easily and reliably remove deposits stuck to the observation window and obtain a clear observation image even when deposits are being removed.
    Type: Application
    Filed: March 8, 2010
    Publication date: September 9, 2010
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Hitoshi Karasawa, Sho Nakajima, Daisuke Asada, Nobuyoshi Yazawa
  • Publication number: 20100225754
    Abstract: A medical instrument according to the present invention is a medical instrument used by being introduced into the body and fixed therein, which includes a fixing section fixed to a body wall in the body, an image pickup section that picks up an image of an object to be examined in the body, an illumination section that illuminates the object to be examined in the body and a sheet body in which the illumination section is disposed and which is made unfoldable so as to spread with respect to the image pickup section so that an illumination region of illumination light is expanded in an image pickup region of the image pickup section and a wide range is irradiated with the illumination light, and can thereby irradiate the object to be examined whose images are taken with illumination light of sufficient brightness and luminous intensity distribution.
    Type: Application
    Filed: March 8, 2010
    Publication date: September 9, 2010
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Nobuyoshi Yazawa, Hitoshi Karasawa, Daisuke Asada, Sho Nakajima, Tsutomu Urakawa
  • Publication number: 20100113872
    Abstract: A medical apparatus includes a medical instrument that is introduced into a body cavity and has a driven posture control portion; a fixing portion for fixing the medical instrument to a body wall inside a body cavity; a movable portion that is interposed between the medical instrument and the fixing portion and movably connects the medical instrument to the fixing portion; and an extracorporeal device that is installed outside the body and has a posture control portion that moves the medical instrument relative to the fixing portion.
    Type: Application
    Filed: January 11, 2010
    Publication date: May 6, 2010
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Daisuke ASADA, Hitoshi KARASAWA, Keiji HANDA, Sho NAKAJIMA