Patents by Inventor Jun Matsukawa

Jun Matsukawa 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: 20240238780
    Abstract: An object is to provide a micro-analysis chip with which stable ion concentration measurement can be performed without increasing a chip size or prolonging a measurement time. In order to achieve this object, the following micro-analysis chip is provided. That is, provided is a micro-analysis chip when an average areal velocity which is an area of a region that a specimen has permeated during a period until a dispensed specimen reaches a reference electrode is represented by V1, and when an average areal velocity which is an area of a region that the specimen has permeated during a period until the dispensed specimen fills an inside of a first channel chamber after the dispensed specimen has reached the reference electrode is represented by V2, the average areal velocity V1 and the average areal velocity V2 satisfy a relationship of V1>V2.
    Type: Application
    Filed: March 27, 2024
    Publication date: July 18, 2024
    Inventors: FUKA ENOKIDO, MAKOTO FUKATSU, JUN MIURA, MASANORI TANAKA, HARUNOBU MAEDA, KATSUICHI ABE, AKIHISA MATSUKAWA, YASUKAZU IKAMI, Keiji Miyazaki, TAKESHI YAMAMOTO
  • Publication number: 20240238785
    Abstract: The present disclosure is to provide a microanalysis chip in which: a first channel chamber has a reference electrode arranged therein, the reference electrode having a surface on which an ion crystal having specimen solubility is arranged; a second channel chamber has a working electrode arranged therein; and a first channel and a second channel are configured so that, when a time period required for a specimen to reach the ion crystal after the specimen is dispensed to a dispensing section is represented by T1 and a time period required for the specimen to reach the working electrode after the specimen is dispensed to the dispensing section is represented by T2, the time period T1 and the time period T2 satisfy a relationship of T1>T2.
    Type: Application
    Filed: March 27, 2024
    Publication date: July 18, 2024
    Inventors: KATSUICHI ABE, FUKA ENOKIDO, JUN MIURA, HARUNOBU MAEDA, MASANORI TANAKA, MAKOTO FUKATSU, AKIHISA MATSUKAWA, YASUKAZU IKAMI, Keiji Miyazaki, TAKESHI YAMAMOTO
  • Patent number: 7976327
    Abstract: A card connector is adapted to receive first and second electronic cards, each having a plurality of contact pads. The second card being wider than the first card. The connector includes an insulative housing with a plurality of first and second terminals mounted therein for engaging respective ones of the contact pads of the electronic cards when the cards are inserted into the connector. A cover member is pivotally mounted on the housing to permit movement of the cover member between an open position at which one of said first and second electronic cards may be inserted and a closed position at which the electronic card inserted into the cover is operatively positioned within the connector. The cover member has first and second sets of positioning members configured to position and hold electronic cards exclusively at the desired location for such card and wherein some of the positioning members of the first set also act as positioning members of the second set.
    Type: Grant
    Filed: October 27, 2008
    Date of Patent: July 12, 2011
    Assignee: Molex Incorporated
    Inventors: Yasuyoshi Matsumoto, Mitsuhiro Tomita, Jun Matsukawa, Kazuo Matsukawa, legal representative, Yuji Naito
  • Publication number: 20110008985
    Abstract: A card connector is adapted to receive first and second electronic cards, each having a plurality of contact pads. The second card being wider than the first card. The connector includes an insulative housing with a plurality of first and second terminals mounted therein for engaging respective ones of the contact pads of the electronic cards when the cards are inserted into the connector. A cover member is pivotally mounted on the housing to permit movement of the cover member between an open position at which one of said first and second electronic cards may be inserted and a closed position at which the electronic card inserted into the cover is operatively positioned within the connector. The cover member has first and second sets of positioning members configured to position and hold electronic cards exclusively at the desired location for such card and wherein some of the positioning members of the first set also act as positioning members of the second set.
    Type: Application
    Filed: October 27, 2008
    Publication date: January 13, 2011
    Applicant: MOLEX INCORPORATED
    Inventors: Yasuyoshi Matsumoto, Mitsuhiro Tomita, Jun Matsukawa, Yuji Naito
  • Patent number: 7467959
    Abstract: A memory card connector (10) is provided with an insulating housing (12) having a rear terminal-mounting section (26) which mounts a plurality of terminals having contact portions for engaging appropriate contacts on a memory card (22). A metal shell (14) is mounted on the housing and combines therewith to define a cavity having a front insertion opening to permit insertion and withdrawal of the memory card into and out of the connector. A card eject mechanism includes a slider (50) movably mounted on the housing and engageable with the memory card for movement therewith into and out of the cavity. The slider has a cam slot (52) defining movement of the card in the card-insertion and card-withdrawal directions. A cam pin (64) is operatively engageable in the cam slot of the slider. The cam pin (64) is formed from the metal shell.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: December 23, 2008
    Assignee: Molex Incorporated
    Inventors: Jun Matsukawa, Mitsuhiro Tomita
  • Patent number: 7367828
    Abstract: A memory card connector includes an insulative housing having a rear terminal-mounting section which mounts a plurality of terminals having contact portions for engaging appropriate contacts on a memory card. A metal shell is mounted on the housing and combines therewith to define an interior card-receiving cavity formed by a top plate and opposite side plates of the metal shell. The cavity has a front insertion opening to permit insertion and withdrawal of the memory card into and out of the connector. The terminal-mounting section of the housing is located at the rear of the cavity. A card ejector mechanism is located at least partially beneath the cavity adjacent one side thereof, whereby the opposite side plates of the metal shell define the opposite sides of the cavity.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: May 6, 2008
    Assignee: Molex Incorporated
    Inventors: Jun Matsukawa, Mitsuhiro Tomita
  • Patent number: 7335064
    Abstract: A memory card connector includes an interior cavity for receiving a memory card. An insulating housing has a rear terminal-mounting section and at least one longitudinal side wall section extending forwardly from one end of the rear section. A metal shell covers at least a portion of the insulating housing and includes a cover plate overlying at least a portion of the longitudinal side wall section of the housing An engaging structure includes an engaging projection on one of the cover plate of the metal shell or the top surface of the side wall section of the housing extending into an engaging opening in the other of the cover plate or top surface to prevent relative movement therebetween in a plane generally parallel to the cover plate and top surface. A slight clearance is provided between the engaging projection and the engaging opening to avoid creating residual stresses in the housing.
    Type: Grant
    Filed: October 3, 2003
    Date of Patent: February 26, 2008
    Assignee: Molex Incorporated
    Inventors: Jun Matsukawa, Mitsuhiro Tomita, Yasuyoshi Matsumoto
  • Patent number: 7238034
    Abstract: A memory card connector has an interior cavity into which a memory card is inserted to a temporary retained position and then to a fully inserted position. The connector includes an insulating housing having a rear terminal-mounting section at a rear of the cavity. A plurality of terminals are mounted on the terminal-mounting section and have contact portions for engaging contacts on the memory card. A slider is movably mounted on the housing and is engageable with the memory card for movement therewith. The slider is slidable along a side wall of the housing. The slider has a projection engageable in a recess in a side of the memory card. A sheet metal shell covers at least a portion of the insulating housing and includes a cover plate overlying at least a portion of the cavity. A side wall plate depends from the cover plate and overlies at least a portion of the side wall of the housing.
    Type: Grant
    Filed: October 3, 2003
    Date of Patent: July 3, 2007
    Assignee: Molex Incorporated
    Inventors: Jun Matsukawa, Mitsuhiro Tomita, Yasuyoshi Matsumoto, Koji Yamane
  • Publication number: 20070037424
    Abstract: A memory card connector includes an insulative housing having a rear terminal-mounting section which mounts a plurality of terminals having contact portions for engaging appropriate contacts on a memory card. A metal shell is mounted on the housing and combines therewith to define an interior card-receiving cavity formed by a top plate and opposite side plates of the metal shell. The cavity has a front insertion opening to permit insertion and withdrawal of the memory card into and out of the connector. The terminal-mounting section of the housing is located at the rear of the cavity. A card ejector mechanism is located at least partially beneath the cavity adjacent one side thereof, whereby the opposite side plates of the metal shell define the opposite sides of the cavity.
    Type: Application
    Filed: March 19, 2004
    Publication date: February 15, 2007
    Inventors: Jun Matsukawa, Mitsuhiro Tomita
  • Publication number: 20060172572
    Abstract: A memory card connector has an interior cavity into which a memory card is inserted to a temporary retained position and then to a fully inserted position. The connector includes a n insulating housing having a rear terminal-mounting section at a rear of the cavity. A plurality of terminals are mounted on the terminal-mounting section and have contact portions for engaging contacts on the memory card. A slider is movably mounted on the housing and is engageable with the memory card for movement therewith. The slider is slidable along a side wall of the housing. The slider has a projection engageable in a recess in a side of the memory card. A sheet metal shell covers at least a portion of he insulating housing and includes a cover plate overlying at least a portion of the cavity. A side wall plate depends from the cover plate and overlies at least a portion of the side wall of the housing.
    Type: Application
    Filed: October 3, 2003
    Publication date: August 3, 2006
    Inventors: Jun Matsukawa, Mitsuhiro Tomita, Yasuyoshi Matsumoto, Koji Yamane
  • Publication number: 20060148322
    Abstract: A memory card connector includes an interior cavity for receiving a memory card. An insulating housing has a rear terminal-mounting section and at least one longitudinal side wall section extending forwardly from one end of the rear section. A metal shell covers at least a portion of the insulating housing and includes a cover plate overlying at least a portion of the longitudinal side wall section of the housing An engaging structure includes an engaging projection on one of the cover plate of the metal shell or the top surface of the side wall section of the housing extending into an engaging opening in the other of the cover plate or top surface to prevent relative movement therebetween in a plane generally parallel to the cover plate and top surface. A slight clearance is provided between the engaging projection and the engaging opening to avoid creating residual stresses in the housing.
    Type: Application
    Filed: October 3, 2003
    Publication date: July 6, 2006
    Inventors: Jun Matsukawa, Mitsuhiro Tomita, Yasuyoshi Matsumoto
  • Patent number: 6336829
    Abstract: An electrical connector comprises an elongated connector body (1) having a plug cavity (2) for receiving a mating connector; a plurality of partition walls (8) provided within the plug cavity (2) with a predetermined pitch to form a plurality of terminal mounting spaces (9); a plurality of contact terminals (12) each having a fixing section (13), a terminal lead (14) extending from one end of the fixing section, a U-shaped section (15) extending from the other end of the fixing section, and a contact section (16) extending from the U-shaped section. The fixing sections are mounted in the terminal mounting spaces such that the terminal leads projecting from the connector body and the contact sections facing a center of the plug cavity; and a device for preventing the contact sections from moving toward the fixing sections. Protrusions (11) are provided on sides of the partition walls (8) enter the gaps (17) between the contact sections (16) and the fixing sections (13).
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: January 8, 2002
    Assignee: Hirose Electric Co., Ltd.
    Inventor: Jun Matsukawa
  • Publication number: 20010014548
    Abstract: An electrical connector comprises an elongated connector body (1) having a plug cavity (2) for receiving a mating connector; a plurality of partition walls (8) provided within the plug cavity (2) with a predetermined pitch to form a plurality of terminal mounting spaces (9); a plurality of contact terminals (12) each having a fixing section (13), a terminal lead (14) extending from one end of the fixing section, a U-shaped section (15) extending from the other end of the fixing section, and a contact section (16) extending from the U-shaped section. The fixing sections are mounted in the terminal mounting spaces such that the terminal leads projecting from the connector body and the contact sections facing a center of the plug cavity; and a device for preventing the contact sections from moving toward the fixing sections. Protrusions (11) are provided on sides of the partition walls (8) enter the gaps (17) between the contact sections (16) and the fixing sections (13).
    Type: Application
    Filed: October 12, 1999
    Publication date: August 16, 2001
    Inventor: JUN MATSUKAWA
  • Patent number: 5876245
    Abstract: A circuit board electrical connector includes a plurality of multicontact connectors (1) to be mounted on a circuit board with a predetermined interval; a plurality of linking members (6) for joining the multicontact connectors with the predetermined interval before the multicontact connectors are mounted on the circuit board; and linking devices (7-10) for removably linking the multicontact connectors to the linking members.
    Type: Grant
    Filed: March 7, 1996
    Date of Patent: March 2, 1999
    Assignee: Hirose Electric Co., Ltd.
    Inventors: Mitsuhiro Tomita, Shigehiro Morita, Jun Matsukawa