Patents by Inventor Kazuhiko Ishii

Kazuhiko Ishii 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: 20040030896
    Abstract: A cryptographic communication method between IC cards in an electronic ticket distribution system is provided, wherein when a server and a user terminal, to each of which an IC card is connected, begin mutual data-communication or when an IC card and, a ticket collecting machine begin mutual data-communication, they both dynamically change encryption algorithms for mutual authentication and for concealment of contents to be transmitted in accordance with information about commonly usable encryption algorithms exchanged at the beginning of a mutual authentication between them, and this procedure at the beginning of the mutual authentication can result in a speedy and secured cryptographic communication between them.
    Type: Application
    Filed: June 10, 2003
    Publication date: February 12, 2004
    Applicants: Ken SAKAMURA, Noboru KOSHIZUKA, NTT DoComo, Inc.
    Inventors: Ken Sakamura, Noboru Koshizuka, Hiroshi Aono, Kazuhiko Ishii, Kensaku Mori, Sadayuki Hongo
  • Publication number: 20040019790
    Abstract: An IC card 16 according to the present invention is provided with an electronic value storing means, a request acquiring means, a verifying means, and an output means. The request acquiring means acquires an access request from display application 151 to electronic value 161 stored in the electronic value storing means, along with application authentication information held by the display application 151. The verifying means determines the validity of the application authentication information in accordance with the access request acquired by the request acquiring means. When the verifying means determines that the application authentication information is valid, the output means outputs substantive information of the electronic value 161 to the display application 151.
    Type: Application
    Filed: April 22, 2003
    Publication date: January 29, 2004
    Applicant: NTT DoCoMo, Inc.
    Inventors: Hiroshi Aono, Kazuhiko Ishii, Kensaku Mori, Sadayuki Hongo
  • Publication number: 20030236744
    Abstract: Each IC card 1 notifies a server 3 of the ID of the IC card and the connection information of a terminal device to which the IC card is connected. The server 3 stores the ID and the connection information in a database 4 while associating the ID and the connection information with each other. When an IC card 1 communicates with another IC card, the IC card 1 requests the connection information concerning the destination IC card from the server 3 while specifying the ID of this IC card. The server 3 searches the database 4 for the connection information corresponding to the ID specified by the request, and notifies the requesting IC card 1 of the acquired connection information. This enables communications between IC cards even if the terminal device to which a destination IC card is connected has been changed in the past.
    Type: Application
    Filed: June 10, 2003
    Publication date: December 25, 2003
    Applicants: NTT DoCoMo, Inc.
    Inventors: Ken Sakamura, Noboru Koshizuka, Kazuhiko Ishii, Kensaku Mori, Hiroshi Aono, Sadayuki Hongo
  • Patent number: 6664313
    Abstract: The present invention relates to a polycarbonate resin composition comprising 100 parts by weight of an aromatic polycarbonate resin (a), 3 to 30 parts by weight of titanium oxide (b), 0.01 to 9 parts by weight of silica (c1), 0.01 to 9 parts by weight of a polyorganosiloxane polymer (c2), and 0.01 to 5 parts by weight of polytetrafluoroethylene (d).
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: December 16, 2003
    Assignee: Mitsubishi Engineering-Plastics Corporation
    Inventors: Yasuhiro Hirai, Kazuhiko Ishii
  • Publication number: 20030228886
    Abstract: The object of the present invention is to prevent copying of electronic value data itself. In communication system of the present invention, different from the conventional system, source IC card A and target IC card B mutually authenticate the other party, and thereafter the electronic value data is transferred from IC card A to IC card B through direct encryption communication between these IC cards A, B, whereby it is feasible to prevent decipher and falsification of the data by a third party in the middle of a communication path and prevent copying of the data.
    Type: Application
    Filed: June 3, 2003
    Publication date: December 11, 2003
    Applicants: NTT DoCoMo, Inc., Ken SAKAMURA, Noboru KOSHIZUKA
    Inventors: Kazuhiko Ishii, Kensaku Mori, Hiroshi Aono, Sadayuki Hongo, Ken Sakamura, Noboru Koshizuka
  • Publication number: 20030220097
    Abstract: A portable terminal 10 according to the present invention is provided with a request acquiring means, a verifying means, and an output means. The request acquiring means acquires an access right authentication request from a display application 153 to a telephone directory management application 152 managing telephone directory data stored in a telephone directory database 151, along with application authentication information held by the display application 153. The verifying means determines the validity of the application authentication information in accordance with the access right authentication request. When it is determined that the application authentication information is valid, the output means permits the access right authentication request and outputs the telephone directory data to the display application 153 in accordance with an access request to the telephone directory data.
    Type: Application
    Filed: April 23, 2003
    Publication date: November 27, 2003
    Applicant: NTT DoCoMo, Inc.
    Inventors: Hiroshi Aono, Kazuhiko Ishii, Kensaku Mori, Sadayuki Hongo
  • Publication number: 20030161432
    Abstract: In a boiling water reactor controlling each control rod hydraulically by driving a solenoid valve, the control system comprises an operation control means 41 having a duplicated data processing unit for generating sequence patterns based on the timing of the driving sequence based on the control information provided manually, a transmission control means 42 for creating a command word corresponding to each control rod being controlled based on said sequence pattern, and mutually communicating each command word between duplicated data processing units and computing the AND logic of said data within a predetermined time difference, and when the computed result coincide, transmitting the selected command word serially; a transmission unit 32 for receiving said command word and performing protocol conversion thereto, and transmitting the same to a plurality of transmission branch units positioned downstream as the control command; and a solenoid valve drive circuit 31 for driving the control rod drive unit corres
    Type: Application
    Filed: March 19, 2003
    Publication date: August 28, 2003
    Applicant: Hitachi, Ltd.
    Inventors: Kazuhiko Ishii, Shigeru Udono, Koji Masui, Masahiro Matsuda
  • Publication number: 20030128792
    Abstract: In a boiling water reactor controlling each control rod hydraulically by driving a solenoid valve, the control system comprises an operation control means 41 having a duplicated data processing unit for generating sequence patterns based on the timing of the driving sequence based on the control information provided manually, a transmission control means 42 for creating a command word corresponding to each control rod being controlled based on said sequence pattern, and mutually communicating each command word between duplicated data processing units and computing the AND logic of said data within a predetermined time difference, and when the computed result coincide, transmitting the selected command word serially; a transmission unit 32 for receiving said command word and performing protocol conversion thereto, and transmitting the same to a plurality of transmission branch units positioned downstream as the control command; and a solenoid valve drive circuit 31 for driving the control rod drive unit corres
    Type: Application
    Filed: December 31, 2002
    Publication date: July 10, 2003
    Applicant: Hitachi, Ltd.
    Inventors: Kazuhiko Ishii, Shigeru Udono, Koji Masui, Masahiro Matsuda
  • Patent number: 6590952
    Abstract: In a boiling water reactor controlling each control rod hydraulically by driving a solenoid valve, the control system comprises an operation control means 41 having a duplicated data processing unit for generating sequence patterns based on the timing of the driving sequence based on the control information provided manually, a transmission control means 42 for creating a command word corresponding to each control rod being controlled based on said sequence pattern, and mutually communicating each command word between duplicated data processing units and computing the AND logic of said data within a predetermined time difference, and when the computed result coincide, transmitting the selected command word serially; a transmission unit 32 for receiving said command word and performing protocol conversion thereto, and transmitting the same to a plurality of transmission branch units positioned downstream as the control command; and a solenoid valve drive circuit 31 for driving the control rod drive unit corres
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: July 8, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Kazuhiko Ishii, Shigeru Udono, Koji Masui, Masahiro Matsuda
  • Publication number: 20020146550
    Abstract: The present invention relates to a polycarbonate resin composition comprising 100 parts by weight of an aromatic polycarbonate resin (a), 3 to 30 parts by weight of titanium oxide (b), 0.01 to 9 parts by weight of silica (cl), 0.01 to 9 parts by weight of a polyorganosiloxane polymer (c2), and 01 to 5 parts by weight of polytetrafluoroethylene (d).
    Type: Application
    Filed: December 18, 2001
    Publication date: October 10, 2002
    Inventors: Yasuhiro Hirai, Kazuhiko Ishii
  • Publication number: 20020122520
    Abstract: In a boiling water reactor controlling each control rod hydraulically by driving a solenoid valve, the control system comprises an operation control means 41 having a duplicated data processing unit for generating sequence patterns based on the timing of the driving sequence based on the control information provided manually, a transmission control means 42 for creating a command word corresponding to each control rod being controlled based on said sequence pattern, and mutually communicating each command word between duplicated data processing units and computing the AND logic of said data within a predetermined time difference, and when the computed result coincide, transmitting the selected command word serially; a transmission unit 32 for receiving said command word and performing protocol conversion thereto, and transmitting the same to a plurality of transmission branch units positioned downstream as the control command; and a solenoid valve drive circuit 31 for driving the control rod drive unit corres
    Type: Application
    Filed: August 30, 2001
    Publication date: September 5, 2002
    Applicant: HITACHI, LTD.
    Inventors: Kazuhiko Ishii, Shigeru Udono, Koji Masui, Masahiro Matsuda
  • Patent number: 6369141
    Abstract: The present invention provides a flame-retardant polycarbonate resin composition which comprises (a) 100 parts by weight of an aromatic polycarbonate resin, (b) 0.5-40 parts by weight of a phosphorus-containing flame retardant, (c) 0.01-5 parts by weight of polyfluoroethylene, (d) 0-5 parts by weight of sulfonic acid metal salt, and (e) 0.5-30 parts by weight of a multi-layered polymer having a core made of an elastic polymer having a glass-transition temperature (Tg) lower than a room temperature, and an outer layer made of a thermoplastic resin having an adhesiveness or miscibility to polycarbonate, provided that the composition comprises 3-40 parts by weight of a phosphorus-containing flame retardant when said composition comprises substantially no sulfonic acid metal salt.
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: April 9, 2002
    Assignee: Mitsubishi Engineering-Plastics Corporation
    Inventors: Kazuhiko Ishii, Ken Shimomai, Michio Nakata
  • Patent number: 6342550
    Abstract: The purpose of the present invention is to provide a flame-retardant polycarbonate resin composition which contains phosphorus-free flame-retardant(s), has an excellent impact resistance, an excellent heat resistance as well as an excellent moldability, and can satisfy a severe flammability level. According to the present invention, there is provided a flame-retardant polycarbonate resin composition which comprises (A) 100 parts by weight of an aromatic polycarbonate resin, (B) 0.01-5 parts by weight of an organic sulfonic acid metal salt, (C) 0.01-5 parts by weight of a fluorinated polyolefin, (D) 0.2-20 parts by weight of a diene-containing multi-layered polymer, and wherein the content of a phosphorus-containing flame-retardant is less than 0.5 parts by weight.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: January 29, 2002
    Assignee: Mitsubishi Engineering Plastics Corporation
    Inventors: Kazuhiko Ishii, Ken Shimomai
  • Patent number: 6294239
    Abstract: An ultraviolet-curable adhesive composition comprising a photopolymerization initiator whose molar absorption coefficient at a wavelength of 360-450 nm is at least 400 and an ultraviolet-curable compound. The adhesive composition of this invention can bond substrates which show transmittances of 0.01-20% to all of energy beams of a wavelength of 280-380 nm, to one another.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: September 25, 2001
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Kiyohisa Tokuda, Kazuhiko Ishii
  • Patent number: 6284185
    Abstract: An ultraviolet-curable adhesive composition comprising a photopolymerization initiator whose molar absorption coefficient at a wavelength of 360-450 nm is at least 400 and an ultraviolet-curable compound. The adhesive composition of this invention can bond substrates which show transmittances of 0.01-20% to all of energy beams of a wavelength of 280-380 nm, to one another such as base boards for an optical disk.
    Type: Grant
    Filed: March 9, 2000
    Date of Patent: September 4, 2001
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Kiyohisa Tokuda, Kazuhiko Ishii
  • Patent number: 6254958
    Abstract: The present invention aims to develop a photosensitive resin composition which exhibits a rapid ink absorption rate, which has an excellent water resistance, and which is appropriate for providing an ink receiving layer forming a sharp ink dot shape and having an excellent color formability of ink. A photosensitive resin composition forming an excellent ink receiving layer is obtained by incorporating at least one selected from an ethylenically unsaturated group-containing compound having quaternary nitrogen and a grain flour (filler) such as a wheat flour or the like in a photosensitive resin composition containing a quaternary nitrogen-free ethylenically unsaturated group-containing compound, a photopolymerization initiator etc.
    Type: Grant
    Filed: July 22, 1998
    Date of Patent: July 3, 2001
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Kenji Yoshida, Kiyohisa Tokuda, Kazuhiko Ishii
  • Patent number: 6017603
    Abstract: An ultraviolet-curable adhesive composition which comprises (A) a bisphenol type epoxy (meth)acrylate having a molecular weight of 450 to 3,000, (B) a urethane (meth)acrylate having a molecular weight of 400 to 10,000, (E) a (meth)acrylate monomer other than (A) and (B), and (F) a photopolymerization initiator, and an article having a cured layer of the above adhesive composition.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: January 25, 2000
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Kiyohisa Tokuda, Kenji Yoshida, Kazuhiko Ishii, Minoru Yokoshima
  • Patent number: 5658984
    Abstract: A permanent anti-static polycarbonate resin composition is comprises(a) 50-95 parts by weight of an aromatic polycarbonate resin,(b) 2-40 parts by weight of a block copolyamide resin,(c) 0-50 parts by weight of an aromatic polyester resin, and(d) 1-30 parts by weight of a multi-layered polymer having a structure comprising a core composed of a rubber-like polymer prepared from an alkyl acrylate monomer in which the carbon number of the alkyl group is 2-8, and an outer shell layer formed on the surface of the core and composed of a glass-like polymer prepared from an aromatic vinyl monomer or an aromatic vinyl monomer and a vinyl monomer copolymerizable therewith.
    Type: Grant
    Filed: December 21, 1995
    Date of Patent: August 19, 1997
    Assignee: Mitsubishi Engineering-Plastics Corporation
    Inventors: Kazuhiko Ishii, Goro Shimaoka, Michio Nakata
  • Patent number: 5534557
    Abstract: The composition of the present invention is excellent in compatibility, transparency and curability and give a cured coat of excellent gloss and of less smell, and cured products of excellent properties can be obtained by curing the composition.The present invention relates to an onium salt represented by the following formula (1): ##STR1## wherein Ar is a mono- to tetra-valent aromatic group, X is a bisphenylsulfonio group which may have a substituent, a is 1-4, b is 0 or 1-3, a+b is 1-4, n is 1-4, and Z is a halide represented by the following formula (3): ##STR2## where M is a boron atom, a phosphorus atom, an arsenic atom or an antimony atom, Q is a halogen atom, m is 3-6, l is 0 or 1, and m+l is 4-6; a photopolymerization initiator containing the onium salt as an active ingredient; an energy ray-curable composition containing the initiator; and a cured product.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: July 9, 1996
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Tetsuya Abe, Kazuhiko Ishii, Minoru Yokoshima
  • Patent number: 5502083
    Abstract: The composition of the present invention is excellent in compatibility, transparency and curability and give a cured coat of excellent gloss and of less smell, and cured products of excellent properties can be obtained by curing the composition.The present invention relates to an onium salt represented by the following formula (1): ##STR1## wherein Ar is a mono- to tetra-valent aromatic group, X is a bisphenylsulfonio group which may have a substituent, a is 1-4, b is 0 or 1-3, a+b is 1-4, n is 1-4, and Z is a halide represented by the following formula (3):MQ.sub.m (OH).sub.l (3)where M is a boron atom, a phosphorus atom, an arsenic atom or an antimony atom, Q is a halogen atom, m is 3-6, l is 0 or 1, and m+l is 4-6; a photopolymerization initiator containing the onium salt as an active ingredient; an energy ray-curable composition containing the initiator; and a cured product.
    Type: Grant
    Filed: June 8, 1994
    Date of Patent: March 26, 1996
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Tetsuya Abe, Kazuhiko Ishii, Minoru Yokoshima