Patents by Inventor Yuichi Kuroki

Yuichi Kuroki 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: 20100176533
    Abstract: The invention provides a method for manufacturing a seal integrally provided with conducting members, the method capable of suppressing generation of burrs even if the conducting members have complicated structures, e.g., when the conducting members are laid on each other while displaced from each other. In the method for manufacturing the seal provided with the plurality of FPCs 21, 22 and 23 laid on each other, while displaced from each other, leakage preventing portions 31, 32, 33, and 34 for preventing leakage of a seal material from a cavity C are formed in a portion of a gap formed between the FPCs 21 and 23 and at portions of surfaces of the FPC 23 and FPC 22 before the FPCs 21, 22, and 23 are disposed in a mold. In this way, it is possible to prevent the leakage of the seal material in molding a seal member 11.
    Type: Application
    Filed: September 5, 2007
    Publication date: July 15, 2010
    Applicant: Nok Corporation
    Inventors: Takahiro Hayashi, Yuichi Kuroki
  • Patent number: 7749635
    Abstract: In order to provide a gasket which has a good handling property as a gasket used for a fuel battery or a gasket for an hard disc drive, can be easily integrated with the other end mounting member even in the case that the other end mounting member such as a separator or the like is a material having low strength or a thin plate, and has good mounting workability, a gasket is having a sheet-shaped gasket mounting member provided with a sticking function on one face, and a gasket main body made of a rubber-type elastic member integrated with the sheet-shaped gasket mounting member, and the gasket is mounted to the other end mounting member on the basis of the sticking function of the sheet-shaped gasket mounting member.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: July 6, 2010
    Assignee: NOK Corporation
    Inventors: Yuichi Kuroki, Kazuhisa Senda, Yoshihiro Kurano, Tomohiro Inoue
  • Patent number: 7504173
    Abstract: In order to provide a constituting part for a fuel battery in which a number of steps of assembling the constituting parts for the fuel battery can be reduced, and in which the replacing property and the maintenance property of fuel battery cell parts can be improved and the cost for parts can be reduced, the structure is made such that a separator made of a carbon plate or substantially similar material, a gas diffusion layer made of a carbon fiber or substantially similar material, and a gasket made of a liquid rubber cured material or substantially similar material are integrally formed, and further, gaskets are respectively provided on both surfaces of a pair of gas diffusion layers holding an independent electrolyte membrane from both sides thereof between the pair.
    Type: Grant
    Filed: May 22, 2001
    Date of Patent: March 17, 2009
    Assignee: NOK Corporation
    Inventors: Yuichi Kuroki, Yoshihiro Kurano, Tomohiro Inoue
  • Publication number: 20080129182
    Abstract: A lead-free organic sealant with which sealing can be carried out at a temperature lower than 400° C., and which is excellent in strength at high temperature. Specifically, an organic sealant for sealing envelope-constituting members to constitute a vacuum envelope for an image display device, wherein a fired body of the organic sealant has a minimum viscosity of at most 103 Pass within a temperature range of at least 300° C. and lower than 400° C., and the fired body of the organic sealant satisfies 0.99<m400/m20?1.00, where m20 is the mass at 20° C., and m400 is the mass at 400° C.
    Type: Application
    Filed: December 17, 2007
    Publication date: June 5, 2008
    Applicants: ASAHI GLASS COMPANY LIMITED, MITSUI CHEMICALS INC.
    Inventors: Yasushi MIZUTA, Akihiro Yamazaki, Yuichi Kuroki, Tsunehiko Sugawara, Kenji Ishizeki
  • Publication number: 20070196717
    Abstract: In order to prevent an electrolyte membrane from being broken, and make an assembling steps of a cell easy, in a fuel cell provided with a membrane electrode complex in which catalyst layers are respectively arranged on both surfaces of a electrolyte membrane, first and second gas diffusion layers which are arranged on both surfaces of the electrode complex, separators for respectively supplying reaction gas to the first and second gas diffusion layers, and a gasket for sealing the reaction gas, the gasket is formed on a surface of the gas diffusion layer so as to oppose to the separator, at least the gasket forming portion of the gas diffusion layer has a lower void content than the portion in contact with the catalyst layer, and the gasket arranged in the first and second gas diffusion layers is integrally formed at least via a through hole passing through the first and second gas diffusion layers.
    Type: Application
    Filed: April 13, 2007
    Publication date: August 23, 2007
    Inventors: Yuichi Kuroki, Yoshihiro Kurano, Tomohiro Inoue, Atsushi Oma, Yasuji Ogami, Kazuo Saito
  • Publication number: 20070190390
    Abstract: In order to provide a gasket which has a good handling property as a gasket used for a fuel battery or a gasket for an hard disc drive, can be easily integrated with the other end mounting member even in the case that the other end mounting member such as a separator or the like is a material having low strength or a thin plate, and has good mounting workability, a gasket is having a sheet-shaped gasket mounting member provided with a sticking function on one face, and a gasket main body made of a rubber-type elastic member integrated with the sheet-shaped gasket mounting member, and the gasket is mounted to the other end mounting member on the basis of the sticking function of the sheet-shaped gasket mounting member.
    Type: Application
    Filed: April 9, 2007
    Publication date: August 16, 2007
    Inventors: Yuichi Kuroki, Kazuhisa Senda, Yoshihiro Kurano, Tomohiro Inoue
  • Publication number: 20070154769
    Abstract: In order to provide a gasket which has a good handling property as a gasket used for a fuel battery or a gasket for an HDD, can be easily integrated with the other end mounting member even in the case that the other end mounting member such as a separator or the like is a material having low strength or a thin plate, and has good mounting workability, a gasket is having a sheet-shaped gasket mounting member provided with a sticking function on one face, and a gasket main body made of a rubber-type elastic member integrated with the sheet-shaped gasket mounting member, and the gasket is mounted to the other end mounting member on the basis of the sticking function of the sheet-shaped gasket mounting member.
    Type: Application
    Filed: March 14, 2007
    Publication date: July 5, 2007
    Inventors: Yuichi Kuroki, Kazuhisa Senda, Yoshihiro Kurano, Tomohiro Inoue
  • Publication number: 20070148524
    Abstract: In order to provide a gasket which has a good handling property as a gasket used for a fuel battery or a gasket for an HDD, can be easily integrated with the other end mounting member even in the case that the other end mounting member such as a separator or the like is a material having low strength or a thin plate, and has good mounting workability, a gasket is having a sheet-shaped gasket mounting member provided with a sticking function on one face, and a gasket main body made of a rubber-type elastic member integrated with the sheet-shaped gasket mounting member, and the gasket is mounted to the other end mounting member on the basis of the sticking function of the sheet-shaped gasket mounting member.
    Type: Application
    Filed: March 14, 2007
    Publication date: June 28, 2007
    Inventors: Yuichi Kuroki, Kazuhisa Senda, Yoshihiro Kurano, Tomohiro Inoue
  • Publication number: 20070148525
    Abstract: In order to provide a gasket which has a good handling property as a gasket used for a fuel battery or a gasket for an HDD, can be easily integrated with the other end mounting member even in the case that the other end mounting member such as a separator or the like is a material having low strength or a thin plate, and has good mounting workability, a gasket is having a sheet-shaped gasket mounting member provided with a sticking function on one face, and a gasket main body made of a rubber-type elastic member integrated with the sheet-shaped gasket mounting member, and the gasket is mounted to the other end mounting member on the basis of the sticking function of the sheet-shaped gasket mounting member.
    Type: Application
    Filed: March 14, 2007
    Publication date: June 28, 2007
    Inventors: Yuichi Kuroki, Kazuhisa Senda, Yoshihiro Kurano, Tomohiro Inoue
  • Publication number: 20070141279
    Abstract: To provide an envelope for an image display device, a hermetic sealing material and a sealing method, with which sealing is possible at a temperature less than 400° C., sufficient strength is achieved in a high temperature environment, and characteristics will not decrease under high humidity conditions including a high temperature and high humidity atmosphere. An envelope for an image display device, having envelope-constituting members including an image display portion made of glass, sealed with a hermetic sealing material layer, wherein the hermetic sealing material layer includes an organic hermetic sealing material layer obtained by firing an organic hermetic sealing material preferably including a primer layer, a fired body of the organic hermetic sealing material has a viscosity of at least 105 Pa·s within a range of from 200 to 350° C., and preferably the flexural strength after the fired body is left at rest in a constant temperature and constant humidity atmosphere at a temperature of 80° C.
    Type: Application
    Filed: February 22, 2007
    Publication date: June 21, 2007
    Applicants: ASAHI GLASS CO., LTD., MITSUI CHEMICALS INC.
    Inventors: Yasushi Mizuta, Akihiro Yamazaki, Yuichi Itou, Yuichi Kuroki, Kenji Ishizeki
  • Patent number: 7226686
    Abstract: In order to prevent an electrolyte membrane from being broken, and make an assembling steps of a cell easy, in a fuel cell provided with a membrane electrode complex in which catalyst layers are respectively arranged on both surfaces of a electrolyte membrane, first and second gas diffusion layers which are arranged on both surfaces of the electrode complex, separators for respectively supplying reaction gas to the first and second gas diffusion layers, and a gasket for sealing the reaction gas, the gasket is formed on a surface of the gas diffusion layer so as to oppose to the separator, at least the gasket forming portion of the gas diffusion layer has a lower void content than the portion in contact with the catalyst layer, and the gasket arranged in the first and second gas diffusion layers is integrally formed at least via a through hole passing through the first and second gas diffusion layers.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: June 5, 2007
    Assignees: NOK Corporation, Kabushiki Kaisha Toshiba
    Inventors: Yuichi Kuroki, Yoshihiro Kurano, Tomohiro Inoue, Atsushi Oma, Yasuji Ogami, Kazuo Saito
  • Patent number: 7226685
    Abstract: In order to reduce an assembling man hour of the constituting part for the fuel battery and prevent wrinkles from being generated in an electrolyte membrane, in a constituting part for a fuel battery having electrodes with catalyst in both pole sides of an electrolyte membrane and provided with gas diffusion layers for promoting diffusion of gas in both outer sides thereof, an integrated product between the gas diffusion layers and the gasket, the gas diffusion layers being made of a carbon fiber or the like and impregnated with a rubber, and forming gaskets is bonded to an integrated product of the electrolyte membrane and the electrodes with catalyst by using a hot press.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: June 5, 2007
    Assignee: NOK Corporation
    Inventors: Yuichi Kuroki, Tomohiro Inoue
  • Patent number: 7091143
    Abstract: A glass funnel suitable for a chemical strengthening method of an electric field application type without impairing the safety of a cathode ray tube. A glass funnel for a cathode ray tube, characterized in that glass at a body portion 3 contains at least Na2O and K2O, the conductivity of said glass at the strain point is at least 4×10?6 S/cm, the conductivity at 150° C. is at most 5×10?12 S/cm, and a compressive stress layer is formed by a chemical strengthening method on at least part of the outer surface of the body portion 3.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: August 15, 2006
    Assignees: The Circle for the Promotion of Science and Engineering, Asahi Glass Company, Limited
    Inventors: Shuichi Shibata, Tetsuji Yano, Jaeho Lee, Yuichi Kuroki, Mikio Ueki
  • Publication number: 20060166076
    Abstract: In order to reduce an assembling man hour of the constituting part for the fuel battery and prevent wrinkles from being generated in an electrolyte membrane, in a constituting part for a fuel battery having electrodes with catalyst in both pole sides of an electrolyte membrane and provided with gas diffusion layers for promoting diffusion of gas in both outer sides thereof, an integrated product between the gas diffusion layers and the gasket, the gas diffusion layers being made of a carbon fiber or the like and impregnated with a rubber, and forming gaskets is bonded to an integrated product of the electrolyte membrane and the electrodes with catalyst by using a hot press.
    Type: Application
    Filed: December 15, 2005
    Publication date: July 27, 2006
    Inventors: Yuichi Kuroki, Tomohiro Inoue
  • Patent number: 7063911
    Abstract: In a gasket used for a fuel battery, in order to solve problems with respect to making a seal portion thin, improving an assembling property, preventing a position shift, making a surface pressure low, making the surface pressure uniform, and the like, a gasket lip made of a liquid rubber hardened material is integrally formed on a surface of a flat plate made of a carbon, a graphite, a conductive resin such as a conductive phenol resin or the like, an ion exchange resin, or a metal such as a stainless steel, a magnesium alloy or the like, or on a groove portion applied to the surface.
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: June 20, 2006
    Assignee: NOK Corporation
    Inventors: Osamu Nagai, Shigeo Wakamatsu, Yuichi Kuroki
  • Publication number: 20060061255
    Abstract: A lead-free organic sealant with which sealing can be carried out at a temperature lower than 400° C., and which is excellent in strength at high temperature. Specifically, an organic sealant for sealing envelope-constituting members to constitute a vacuum envelope for an image display device, wherein a fired body of the organic sealant has a minimum viscosity of at most 103 Pa•s within a temperature range of at least 300° C. and lower than 400° C., and the fired body of the organic sealant satisfies 0.99<m400/m20?1.00, where m20 is the mass at 20° C., and m400 is the mass at 400° C.
    Type: Application
    Filed: September 29, 2005
    Publication date: March 23, 2006
    Applicants: ASAHI GLASS COMPANY LIMITED, MITSUI CHEMICALS INC.
    Inventors: Yasushi Mizuta, Akihiro Yamazaki, Yuichi Kuroki, Tsunehiko Sugawara, Kenji Ishizeki
  • Publication number: 20050052135
    Abstract: A glass funnel suitable for a chemical strengthening method of an electric field application type without impairing the safety of a cathode ray tube. A glass funnel for a cathode ray tube, characterized in that glass at a body portion 3 contains at least Na2O and K2O, the conductivity of said glass at the strain point is at least 4×10?6 S/cm, the conductivity at 150° C. is at most 5×10?12 S/cm, and a compressive stress layer is formed by a chemical strengthening method on at least part of the outer surface of the body portion 3.
    Type: Application
    Filed: September 7, 2004
    Publication date: March 10, 2005
    Applicants: ASAHI GLASS COMPANY LIMITED, CIRCLE FOR PROMOTION OF SCI. & ENG.
    Inventors: Shuichi Shibata, Tetsuji Yano, Jaeho Lee, Yuichi Kuroki, Mikio Ueki
  • Patent number: 6805986
    Abstract: In order to make it possible to specify a cell or a module generating an abnormality in a power generating performance (a voltage, a current and the like) without dissembling a fuel battery stack, a gasket for a fuel battery having gaskets on both surfaces of a print circuit for taking out an electric signal within the cell or the module is held between separators, and an electric signal take-out portion for taking out an electric signal (the voltage, the current and the like) is integrally assembled together with a seal.
    Type: Grant
    Filed: February 25, 2002
    Date of Patent: October 19, 2004
    Assignee: NOK Corporation
    Inventor: Yuichi Kuroki
  • Patent number: 6790799
    Abstract: A glass panel for a color cathode ray tube, which has a linear absorption coefficient of X-ray with a wavelength of 0.06 nm of from 30 to 38 cm−1 and which has a layer having a compression stress of at least 70 MPa formed by a chemical strengthening method at least at short axis end portions and/or long axis end portions of the outer surface of a face portion and at a center portion of the inner surface of the face portion.
    Type: Grant
    Filed: May 7, 2002
    Date of Patent: September 14, 2004
    Assignee: Asahi Glass Company, Limited
    Inventors: Yuichi Kuroki, Tsunehiko Sugawara
  • Publication number: 20040137303
    Abstract: In order to prevent an electrolyte membrane from being broken, and make an assembling steps of a cell easy, in a fuel cell provided with a membrane electrode complex in which catalyst layers are respectively arranged on both surfaces of a electrolyte membrane, first and second gas diffusion layers which are arranged on both surfaces of the electrode complex, separators for respectively supplying reaction gas to the first and second gas diffusion layers, and a gasket for sealing the reaction gas, the gasket is formed on a surface of the gas diffusion layer so as to oppose to the separator, at least the gasket forming portion of the gas diffusion layer has a lower void content than the portion in contact with the catalyst layer, and the gasket arranged in the first and second gas diffusion layers is integrally formed at least via a through hole passing through the first and second gas diffusion layers.
    Type: Application
    Filed: October 23, 2003
    Publication date: July 15, 2004
    Inventors: Yuichi Kuroki, Yoshihiro Kurano, Tomohiro Inoue, Atsushi Oma, Yasuji Ogami, Kazuo Saito