Patents by Inventor Hidetoshi Ishikawa

Hidetoshi Ishikawa 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: 20100009660
    Abstract: According to the present invention, a subscriber identity module in a wireless local area network is authenticated using an authentication vector with no decrease in the confidentiality of the calculation processing, even when a triplet is employed as the authentication vector. An HLR of a mobile communication network comprises an attachment unit for attaching to a RAND field of an authentication vector, which is used to authenticate an SIM in a wireless local area network, information specifying calculation information that is constituted by at least one of an algorithm and secret information for use in the authentication calculation.
    Type: Application
    Filed: September 17, 2009
    Publication date: January 14, 2010
    Applicant: NTT DoCoMo, Inc.
    Inventor: Hidetoshi ISHIKAWA
  • Patent number: 7559469
    Abstract: To achieve backward compatibility for smaller chip cards, in particular to legacy card readers/writers or legacy mobile terminals, according to the present invention a smaller chip card comprises a card body and a first contact area (14) with dimensions and locations of contacts according to predefined standard. An integrated circuit chip (36) is, firstly, physically and electrically connected to contacts of a second contact area (38), where the locations of contacts in the second contact area (38) are different from locations of contacts in the first contact area (14). According to the present invention, the integrated circuit chip (36) is also connected to contacts in the first contact area (14).
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: July 14, 2009
    Assignee: NTT DoCoMo, Inc.
    Inventors: Chie Noda, Atsushi Murase, Hidetoshi Ishikawa
  • Publication number: 20090138426
    Abstract: Telephone directory information retained by a user identity module (UIM) is accessed in an efficient manner. A representative telephone directory DS is defined in a UIM. When registration information of a registered record X is read out, a search request is issued from a cellular phone to search Record Number 1 in the representative telephone directory DS for the registered record X. Then, a read-out request is issued to read out Record Number 1 of the representative telephone directory DS. The UIM, upon receipt of the search request, searches the telephone directory for a record storing the registered record X, associates the record with Record number 1 of the representative telephone directory, and then match the data of the records. When a read-out request is issued, the data of the record is read out from Record Number 1 of the representative telephone directory.
    Type: Application
    Filed: November 21, 2008
    Publication date: May 28, 2009
    Applicant: NTT DoCoMo, Inc
    Inventor: Hidetoshi ISHIKAWA
  • Patent number: 7404706
    Abstract: A scroll fluid machine comprises a fixed scroll, an orbiting scroll and a plurality of self-rotation preventing device for preventing the orbiting scroll from rotating on its own axis. On the rear surface of the orbiting scroll, a reinforcement bearing plate is fixed with a central bolt and an outer circumferential bolt. A follower of the self-rotation preventing device is provided in the reinforcement bearing plate. An oil-supply hole is formed through the reinforcement bearing plate to supply oil to the follower.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: July 29, 2008
    Assignee: Anest Iwata Corporation
    Inventors: Hidetoshi Ishikawa, Masaru Tsuchiya
  • Publication number: 20080152528
    Abstract: A scroll fluid machine comprises a driving shaft in a housing. An orbiting scroll is eccentrically revolved around an eccentric axial portion of the driving shaft via a bearing. Air is introduced from outside through an intake port of a circumferential wall of the housing and directed toward the bearing by a guide to cool the bearing.
    Type: Application
    Filed: December 26, 2007
    Publication date: June 26, 2008
    Applicant: Anest Iwata Corporation
    Inventors: Hidetoshi ISHIKAWA, Naohiro MINEKAWA
  • Patent number: 7329108
    Abstract: A scroll fluid machine comprises a housing having a fixed scroll and an orbiting scroll revolved by a driving shaft which is driven by a motor behind the housing. A blowing fan is provided between the orbiting scroll and the motor. Rotation of the fan causes decompression in the housing to allow primary external air to be sucked from the outside into the housing through a primary sucking hole. Secondary external air is introduced from a secondary sucking hole and mixed with the primary external air of the scroll fluid machine to cool the parts of the scroll fluid machine in the housing and/or the motor.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: February 12, 2008
    Assignee: Anest Iwata Corporation
    Inventors: Masaru Tsuchiya, Hidetoshi Ishikawa, Youhei Midorikawa
  • Publication number: 20070257117
    Abstract: A non-contact IC apparatus is provided in a simple configuration with a plurality of IC chips, while enabling reliable communication. A non-contact IC apparatus 1 has a plurality of IC chips 30, 50, an antenna 11 for receiving a radio wave for non-contact IC apparatus, a modem part 12 for acquiring a signal from the radio wave received by the antenna 11, and a distribution control part 13 for selecting an IC chip to receive the signal, out of the plurality of IC chips 30, 50, based on the signal acquired by the modem part 12, and for transmitting the signal to the selected IC chip.
    Type: Application
    Filed: May 2, 2006
    Publication date: November 8, 2007
    Applicant: NTT DoCoMo, Inc.
    Inventors: Hidetoshi Ishikawa, Koji Chiba
  • Publication number: 20070224072
    Abstract: A scroll fluid machine comprises a fixed scroll and an orbiting scroll that engages with the fixed scroll to form a compression chamber between the fixed and orbiting scrolls. Near the outer circumference of the fixed and/or orbiting scroll, an annular dust-seal groove is provided. In the groove, a dust seal fits to prevent a gas from coming into the compression chamber or from leaking out of the compression chamber. In the dust-seal groove, an annular holder or piece is provided to prevent heat from transferring to the dust seal.
    Type: Application
    Filed: March 15, 2007
    Publication date: September 27, 2007
    Inventors: Hidetoshi Ishikawa, Tamotsu Fujioka, Masaru Tsuchiya
  • Publication number: 20070202848
    Abstract: To stop functions of a subscriber authentication module regardless of whether a roaming network is based on IMT-2000 or GSM. HLR of a mobile communication network based on IMT-2000 has a stop information addition part instructing a RAND field of an authentication vector used for authentication of USIM to cause part or all of functions in the subscriber authentication module to stop. The USIM mounted in a mobile terminal has a function stop part executing to cause part or all of functions of the subscriber authentication module to stop, an identification part that refers to information identifying stop information contained in received data and transmits the stop information to a function stop part, and an operation part for performing a predetermined operation using the received data.
    Type: Application
    Filed: February 26, 2007
    Publication date: August 30, 2007
    Applicants: NTT DoCoMo, Inc., DAINIPPON PRINTING CO., LTD.
    Inventors: Hidetoshi ISHIKAWA, Teruaki Shiro, Hiroshi Umeno
  • Publication number: 20070167148
    Abstract: A mobile communication terminal includes a communication unit, a wireless communication unit, a contents acquisition unit, a contents storage unit, a verification unit, and an output permission determination unit. The communication unit communicates with an IC card. The wireless communication unit provides wireless communication using user information stored in the IC card. The contents acquisition unit acquires contents using the user information. The contents storage unit stores the contents in a form so as to be associated with user identification information acquired from the IC card. The verification unit verifies whether or not the user identification information acquired from the IC card matches the user identification information, which is stored in the contents storage unit so as to be associated with contents to be outputted. The output permission determination unit determines whether or not output of the contents should be permitted, receiving verification results obtained by the verification unit.
    Type: Application
    Filed: December 26, 2006
    Publication date: July 19, 2007
    Inventors: Hidetoshi Ishikawa, Teruaki Shiro
  • Patent number: 7240216
    Abstract: Information stored in an IC card which can be set to a block state, where any functions permitted to a user authority holder is not effective and an unblock password is required to set the IC card back to an initial state, is more secured than that stored in an IC card without the block state. The IC card of the present invention is further provided with a counter counting the number of incorrect unblock passwords, and is set to a more secured state of operation where only administrative authority holder can release the IC card.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: July 3, 2007
    Assignee: NTT DoCoMo, Inc.
    Inventors: Hidetoshi Ishikawa, Yukio Yamauchi, Kanehiro Imai, Akihiro Higashi
  • Publication number: 20070104602
    Abstract: A scroll fluid machine comprises a fixed scroll, an orbiting scroll and a plurality of self-rotation preventing device for preventing the orbiting scroll from rotating on its own axis. On the rear surface of the orbiting scroll, a reinforcement bearing plate is fixed with a central bolt and an outer circumferential bolt. A follower of the self-rotation preventing device is provided in the reinforcement bearing plate. An oil-supply hole is formed through the reinforcement bearing plate to supply oil to the follower.
    Type: Application
    Filed: November 7, 2006
    Publication date: May 10, 2007
    Inventors: Hidetoshi Ishikawa, Masaru Tsuchiya
  • Publication number: 20070077159
    Abstract: A scroll fluid machine comprises a housing having a fixed scroll and an orbiting scroll revolved by a driving shaft which is driven by a motor behind the housing. A blowing fan is provided between the orbiting scroll and the motor. Rotation of the fan causes decompression in the housing to allow primary external air to be sucked from the outside into the housing through a primary sucking hole. Secondary external air is introduced from a secondary sucking hole and mixed with the primary external air of the scroll fluid machine to cool the parts of the scroll fluid machine in the housing and/or the motor.
    Type: Application
    Filed: September 28, 2006
    Publication date: April 5, 2007
    Applicant: ANEST IWATA CORPORATION
    Inventors: Masaru Tsuchiya, Hidetoshi Ishikawa, Youhei Midorikawa
  • Publication number: 20060252424
    Abstract: The present invention provides a mobile communication terminal, an IC card, a mobile communication system, a program, and a communication charge notification method capable of easily indicating roaming communication charges and preventing a user from being unexpectedly charged for communication.
    Type: Application
    Filed: April 12, 2006
    Publication date: November 9, 2006
    Applicants: DAI NIPPON PRINTING CO., LTD., NTT DoCoMo, INC.
    Inventors: Takeshi Ohno, Hiroshi Umeno, Hidetoshi Ishikawa
  • Publication number: 20060172723
    Abstract: According to the present invention, a subscriber identity module in a wireless local area network is authenticated using an authentication vector with no decrease in the confidentiality of the calculation processing, even when a triplet is employed as the authentication vector. An HLR of a mobile communication network comprises an attachment unit for attaching to a RAND field of an authentication vector, which is used to authenticate an SIM in a wireless local area network, information specifying calculation information that is constituted by at least one of an algorithm and secret information for use in the authentication calculation.
    Type: Application
    Filed: January 17, 2006
    Publication date: August 3, 2006
    Applicant: NTT DoCoMo, Inc.
    Inventor: Hidetoshi Ishikawa
  • Publication number: 20060003738
    Abstract: Authentication of a subscriber identity module issued by IMT-2000 network operator is performed with no decrease in the confidentiality of calculation processing, even in cases such as when a roaming network is a GSM network. An HLR of an IMT-2000 mobile communication network comprises an algorithm information attachment unit for attaching, to a RAND field of an authentication vector used to authenticate a USIM, information specifying an algorithm to be used in the authentication calculation.
    Type: Application
    Filed: June 28, 2005
    Publication date: January 5, 2006
    Applicant: NTT DoCoMo, Inc.
    Inventor: Hidetoshi Ishikawa
  • Publication number: 20050231921
    Abstract: To achieve backward compatibility for smaller chip cards, in particular to legacy card readers/writers or legacy mobile terminals, according to the present invention a smaller chip card comprises a card body and a first contact area (14) with dimensions and locations of contacts according to predefined standard. An integrated circuit chip (36) is, firstly, physically and electrically connected to contacts of a second contact area (38), where the locations of contacts in the second contact area (38) are different from locations of contacts in the first contact area (14). According to the present invention, the integrated circuit chip (36) is also connected to contacts in the first contact area (14).
    Type: Application
    Filed: May 24, 2002
    Publication date: October 20, 2005
    Inventors: Chie Noda, Atsushi Murase, Hidetoshi Ishikawa
  • Patent number: 6740334
    Abstract: A highly safe bone resorption suppressing agents, which can be used as medicines or admixed to food products or feeds, is produced. Milk-derived basic cystatins and/or milk-derived basic cystatin decomposition products prepared from milk are made into bone resorption suppressing agents, or admixed to drinks, food products and feeds.
    Type: Grant
    Filed: April 18, 2003
    Date of Patent: May 25, 2004
    Assignee: Show Brand Products Co., Ltd.
    Inventors: Yukihiro Takada, Atsushi Serizawa, Hidetoshi Ishikawa, Tomoe Yoshioka, Seiichiro Aoe
  • Publication number: 20030206963
    Abstract: A highly safe bone resorption suppressing agents, which can be used as medicines or admixed to food products or feeds, is produced. Milk-derived basic cystatins and/or milk-derived basic cystatin decomposition products prepared from milk are made into bone resorption suppressing agents, or admixed to drinks, food products and feeds.
    Type: Application
    Filed: April 18, 2003
    Publication date: November 6, 2003
    Inventors: Yukihiro Takada, Atsushi Serizawa, Hidetoshi Ishikawa, Tomoe Yoshioka, Seiichiro Aoe
  • Patent number: 6607743
    Abstract: A highly safe bone resorption suppressing agents, which can be used as medicines or admixed to food products or feeds, is produced. Milk-derived basic cystatins and/or milk-derived basic cystatin decomposition products prepared from milk are made into bone resorption suppressing agents, or admixed to drinks, food products and feeds.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: August 19, 2003
    Assignee: Snow Brand Milk Products Co., Ltd.
    Inventors: Yukihiro Takada, Atsushi Serizawa, Hidetoshi Ishikawa, Tomoe Yoshioka, Seiichiro Aoe