Patents by Inventor Takumi Yamauchi

Takumi Yamauchi 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: 11971683
    Abstract: Provided an electrophotographic electro-conductive member that can stably suppress an occurrence of fogging in an electrophotographic image. The member comprises a support having an electro-conductive outer surface, and an electro-conductive layer on the outer surface of the support, the electro-conductive layer having a matrix including a cross-linked product of a first rubber, and domains dispersed in the matrix, the domains each includes a cross-linked product of a second rubber and an electro-conductive particle, at least some of the domains is exposed to the outer surface of the electro-conductive member to constitute protrusions on an outer surface of the member, the outer surface of the electro-conductive member is constituted by the matrix and the domains exposed to the outer surface of the electrophotographic electro-conductive member, the electrophotographic electro-conductive member has an impedance of 1.0×103? or more and 1.0×108? or less, and some of the domains satisfy two specific requirements.
    Type: Grant
    Filed: September 27, 2021
    Date of Patent: April 30, 2024
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Satoru Nishioka, Kazuhiro Yamauchi, Hiroaki Watanabe, Takumi Furukawa, Yasuhiro Fushimoto, Masahiro Kurachi, Kenji Takashima, Yuichi Kikuchi, Kana Sato
  • Patent number: 11738348
    Abstract: A first fluid handling device according to the present invention has: a first liquid introduction part; a first cleaning liquid introduction part; a first flow path through which a liquid introduced to the first liquid introduction part or to the first cleaning liquid introduction part flows; a second liquid introduction part; a second cleaning liquid introduction part; a second flow path through which a liquid introduced to the second liquid introduction part or to the second cleaning liquid introduction part flows; a third flow path which allows flowing therethrough of the liquid having flowed through the first flow path and the liquid having flowed through the second flow path; a first diaphragm valve that is disposed between the first and third flow paths; a second diaphragm valve that is disposed between the second and third flow paths; and a chamber that is connected to the third flow path.
    Type: Grant
    Filed: February 18, 2019
    Date of Patent: August 29, 2023
    Assignee: Enplas Corporation
    Inventors: Nobuya Sunaga, Takumi Yamauchi
  • Patent number: 11712695
    Abstract: A flow channel chip has: a common flow channel; introduction flow channels that are respectively connected to the common flow channel; introduction valves that are respectively disposed in the introduction flow channels; a cleaning liquid flow channel that is connected to the common flow channel; and a cleaning liquid valve that is disposed in the cleaning liquid flow channel. This fluid handling device has: a rotary member for controlling opening/closing of the introduction valves; and a cleaning liquid valve control unit for controlling opening/closing of the cleaning liquid valve. After the rotary member is rotated so as to open/close one of the introduction valves, the cleaning liquid valve control unit causes the cleaning liquid valve to open and causes the cleaning liquid to flow in the common flow channel before the rotary member is rotated so as to open/close another of the introduction valves.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: August 1, 2023
    Assignee: Enplas Corporation
    Inventors: Nobuya Sunaga, Takumi Yamauchi, Satomi Yabuuchi
  • Patent number: 11623217
    Abstract: A liquid handling device includes a plurality of first wells configured for a first sample; a first channel connected to the plurality of first wells; a plurality of second wells configured for a second sample; a second channel connected to the plurality of second wells; a plurality of processing agent wells configured for a processing agent configured to process the first sample and the second sample; a processing agent channel connected to the plurality of processing agent wells; and a common channel connected to the first channel, the second channel and the processing agent channel.
    Type: Grant
    Filed: March 11, 2021
    Date of Patent: April 11, 2023
    Assignee: Enplas Corporation
    Inventors: Takumi Yamauchi, Nobuya Sunaga
  • Patent number: 11592114
    Abstract: A fluid handling device includes a first channel, a second channel, and a valve disposed at a connection part between the first channel and the second channel. The valve include a partition wall disposed between the first channel and the second channel, and a diaphragm disposed so as to face the partition wall, a portion of the first channel, and a portion of the second channel. The diaphragm is configured in such a way that when no pressure is applied to the diaphragm, a gap, which serves as a third channel that allows the first channel and the second channel to communicate with each other, is formed between the diaphragm and the partition wall. In plan view, the length of the diaphragm in the extending direction of the third channel is longer than the length of the diaphragm in the direction orthogonal to the extending direction.
    Type: Grant
    Filed: January 20, 2022
    Date of Patent: February 28, 2023
    Assignee: Enplas Corporation
    Inventor: Takumi Yamauchi
  • Patent number: 11566727
    Abstract: A fluid handling device includes: an introduction part configured to introduce liquid; an ejection part configured to eject liquid; a channel including one end connected to the introduction part and another end connected to the ejection part; and a valve disposed at the channel. An inner surface of the introduction part has water-repellency, and an inner surface of the ejection part and at least a part of an inner surface of the channel do not have water-repellency.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: January 31, 2023
    Assignee: Enplas Corporation
    Inventor: Takumi Yamauchi
  • Patent number: 11541389
    Abstract: This fluid handling device has a rotary member that is rotatable around the central axis. In the rotary member, a first protruding part for pressing and closing a valve of a flow channel chip and a recessed part for opening the valve without pressing the valve are disposed on the circumference of a first circle around the central axis. The rotary member further has a second protruding part for, when the recessed part is located at the valve in a state where the rotary member is rotated, pressing the valve so as not to open the valve.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: January 3, 2023
    Assignee: ENPLAS CORPORATION
    Inventors: Nobuya Sunaga, Takumi Yamauchi, Satomi Yabuuchi
  • Patent number: 11471883
    Abstract: A fluid chip suitable for a fluid device is disclosed in which an upper surface of a flow passage has another member bonded thereto. The disclosed fluid chip, in which a flow passage is formed, comprises a base material having a top surface forming at least a portion of a bottom surface of a flow passage, and a bonding member which is formed from an elastomer resin and an upper end surface of which is provided in a position higher than the top surface of the base material. The base material has a support post portion which projects from the top surface and defines the height of a side surface of the flow passage, and the support post portion of the base material is embedded in the bonding member.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: October 18, 2022
    Assignee: Enplas Corporation
    Inventors: Takumi Yamauchi, Nobuya Sunaga
  • Publication number: 20220235868
    Abstract: A fluid handling device includes a first channel, a second channel, and a valve disposed at a connection part between the first channel and the second channel. The valve include a partition wall disposed between the first channel and the second channel, and a diaphragm disposed so as to face the partition wall, a portion of the first channel, and a portion of the second channel. The diaphragm is configured in such a way that when no pressure is applied to the diaphragm, a gap, which serves as a third channel that allows the first channel and the second channel to communicate with each other, is formed between the diaphragm and the partition wall. In plan view, the length of the diaphragm in the extending direction of the third channel is longer than the length of the diaphragm in the direction orthogonal to the extending direction.
    Type: Application
    Filed: January 20, 2022
    Publication date: July 28, 2022
    Applicant: Enplas Corporation
    Inventor: Takumi YAMAUCHI
  • Publication number: 20220105506
    Abstract: A fluid-handling system has: a reservoir; a channel chip; and a cap in which a first end is fitted into an opening of the reservoir and a second end is connected to an introduction port of the channel chip, the cap having a through hole connecting the first end and the second end. The reservoir has a first engaging part, and the channel chip has a second engaging part. The first engaging part of the reservoir and the second engaging part of the channel chip are in a first engaging state when the cap is closed. The first engaging part of the reservoir and the second engaging part of the channel chip are in a second engaging state when the cap is open.
    Type: Application
    Filed: January 28, 2020
    Publication date: April 7, 2022
    Inventor: Takumi Yamauchi
  • Publication number: 20220082180
    Abstract: A fluid handling device includes: an introduction part configured to introduce liquid; an ejection part configured to eject liquid; a channel including one end connected to the introduction part and another end connected to the ejection part; and a valve disposed at the channel. An inner surface of the introduction part has water-repellency, and an inner surface of the ejection part and at least a part of an inner surface of the channel do not have water-repellency.
    Type: Application
    Filed: September 14, 2021
    Publication date: March 17, 2022
    Applicant: Enplas Corporation
    Inventor: Takumi YAMAUCHI
  • Publication number: 20210299652
    Abstract: A liquid handling device includes a main channel configured to carry main liquid, a first sheath liquid channel that opens to a bottom surface of the main channel, the first sheath liquid channel being configured to carry sheath liquid, and a second sheath liquid channel that opens to a top surface of the main channel, the second sheath liquid channel being configured to carry the sheath liquid. At least one of a confluence part of the first sheath liquid channel with the main channel and a confluence part of the second sheath liquid channel with the main channel is made up of the substrate and a curved portion of the film, the curved portion of the film being curved in a direction away from the substrate.
    Type: Application
    Filed: March 26, 2021
    Publication date: September 30, 2021
    Inventor: Takumi Yamauchi
  • Publication number: 20210283604
    Abstract: A liquid handling device includes a plurality of first wells configured for a first sample; a first channel connected to the plurality of first wells; a plurality of second wells configured for a second sample; a second channel connected to the plurality of second wells; a plurality of processing agent wells configured for a processing agent configured to process the first sample and the second sample; a processing agent channel connected to the plurality of processing agent wells; and a common channel connected to the first channel, the second channel and the processing agent channel.
    Type: Application
    Filed: March 11, 2021
    Publication date: September 16, 2021
    Applicant: Enplas Corporation
    Inventors: Takumi YAMAUCHI, Nobuya SUNAGA
  • Publication number: 20210086185
    Abstract: A first fluid handling device according to the present invention has: a first liquid introduction part; a first cleaning liquid introduction part; a first flow path through which a liquid introduced to the first liquid introduction part or to the first cleaning liquid introduction part flows; a second liquid introduction part; a second cleaning liquid introduction part; a second flow path through which a liquid introduced to the second liquid introduction part or to the second cleaning liquid introduction part flows; a third flow path which allows flowing therethrough of the liquid having flowed through the first flow path and the liquid having flowed through the second flow path; a first diaphragm valve that is disposed between the first and third flow paths; a second diaphragm valve that is disposed between the second and third flow paths; and a chamber that is connected to the third flow path.
    Type: Application
    Filed: February 18, 2019
    Publication date: March 25, 2021
    Inventors: Nobuya SUNAGA, Takumi YAMAUCHI
  • Publication number: 20210031194
    Abstract: This fluid handling device has a rotary member that is rotatable around the central axis. In the rotary member, a first protruding part for pressing and closing a valve of a flow channel chip and a recessed part for opening the valve without pressing the valve are disposed on the circumference of a first circle around the central axis. The rotary member further has a second protruding part for, when the recessed part is located at the valve in a state where the rotary member is rotated, pressing the valve so as not to open the valve.
    Type: Application
    Filed: March 25, 2019
    Publication date: February 4, 2021
    Inventors: Nobuya SUNAGA, Takumi YAMAUCHI, Satomi YABUUCHI
  • Publication number: 20210008551
    Abstract: A flow channel chip has: a common flow channel; introduction flow channels that are respectively connected to the common flow channel; introduction valves that are respectively disposed in the introduction flow channels; a cleaning liquid flow channel that is connected to the common flow channel; and a cleaning liquid valve that is disposed in the cleaning liquid flow channel. This fluid handling device has: a rotary member for controlling opening/closing of the introduction valves; and a cleaning liquid valve control unit for controlling opening/closing of the cleaning liquid valve. After the rotary member is rotated so as to open/close one of the introduction valves, the cleaning liquid valve control unit causes the cleaning liquid valve to open and causes the cleaning liquid to flow in the common flow channel before the rotary member is rotated so as to open/close another of the introduction valves.
    Type: Application
    Filed: March 28, 2019
    Publication date: January 14, 2021
    Inventors: Nobuya SUNAGA, Takumi YAMAUCHI, Satomi YABUUCHI
  • Publication number: 20200353471
    Abstract: This cartridge includes: a reservoir that includes an accommodation part and an opening part; and a cap fitted to the opening part. The opening part of the reservoir has: a pressing region and an open region. The cap has a first region that is pressed when the cap is positioned in the pressing region. When the first region is positioned in the pressing region and a through hole in the first region is closed, the cartridge is in a closed state in which the fluid inside the container part is not discharged to the outside via the through hole, and when, from the closed state, the first region moves into the open region and the through hole in the first region opens, the cartridge is in an open state in which the fluid can be discharged from the accommodation part to the outside via the through hole.
    Type: Application
    Filed: January 23, 2019
    Publication date: November 12, 2020
    Applicant: Enplas Corporation
    Inventors: Takumi YAMAUCHI, Ken KITAMOTO
  • Publication number: 20200306752
    Abstract: A fluid chip suitable for a fluid device is disclosed in which an upper surface of a flow passage has another member bonded thereto. The disclosed fluid chip, in which a flow passage is formed, comprises a base material having a top surface forming at least a portion of a bottom surface of a flow passage, and a bonding member which is formed from an elastomer resin and an upper end surface of which is provided in a position higher than the top surface of the base material. The base material has a support post portion which projects from the top surface and defines the height of a side surface of the flow passage, and the support post portion of the base material is embedded in the bonding member.
    Type: Application
    Filed: November 9, 2018
    Publication date: October 1, 2020
    Applicant: Enplas Corporation
    Inventors: Takumi Yamauchi, Nobuya Sunaga
  • Publication number: 20200024123
    Abstract: This liquid handling apparatus has a single introduction part that opens on a first surface side of a substrate and is for introducing a liquid, a plurality of discharge parts that open on the first surface side of the substrate and are for discharging the liquid that has been introduced through the single introduction part, a flow path for connecting the single introduction part and the plurality of discharge parts within the substrate, and a plurality of outflow prevention parts that are disposed so as to surround the openings of the plurality of discharge parts and are for using the surface tension of the liquid to check the progress of the outflow of the liquid from the discharge parts. For each opening part, there are two or more outflow prevention parts disposed so as to surround the opening part.
    Type: Application
    Filed: March 9, 2018
    Publication date: January 23, 2020
    Inventors: Ken KITAMOTO, Takumi YAMAUCHI
  • Patent number: 7415860
    Abstract: An upper mold member 32 having an upstream upper punch 32a, an upper recess portion 32b and a downstream upper punch 32c that are serially arranged, from a feed upstream side of a sheet material W and a lower mold member 24 having an upstream lower punch 24a, a lower recess portion 24b and a downstream lower punch 24c that are serially arranged from the feed upstream side of the sheet material W are caused to displace towards a feed downstream side of the sheet material W while the upper mold member 32 and the lower mold member 24 sandwich the sheet material W between them. The productivity of a press apparatus can be improved and the cost can be reduced.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: August 26, 2008
    Assignee: Denso Corporation
    Inventor: Takumi Yamauchi