Patents by Inventor Yoshihiro Ohba

Yoshihiro Ohba 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: 8207348
    Abstract: The invention provides a thiazolothiazole compound represented by the following Formula (I). In Formula (I), Ar1 represents a substituted or unsubstituted aromatic group; R1 represents a hydrogen atom, an alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group; and n represents an integer of 0 or 1. The invention further provides a thiazolothiazole polymer having the thiazolothiazole compound as a polymerization unit thereof.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: June 26, 2012
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hidekazu Hirose, Takeshi Agata, Katsuhiro Sato, Kazuaki Sato, Yoshihiro Ohba
  • Publication number: 20120134693
    Abstract: An optical sensor includes an irradiation system including a semiconductor laser having plural light-emitting parts; and at least one photodetector that detects an amount of light which is emitted from the irradiation system and reflected on a sheet-like object.
    Type: Application
    Filed: November 17, 2011
    Publication date: May 31, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Fumikazu HOSHI, Yoshihiro OHBA
  • Patent number: 8160021
    Abstract: A system for media independent handover using a session identifier in which a session identifier is used for identifying a media independent handover registration session across different MIH transport instances between a pair of communicating MIHFs. A point of service maintains a single registration state for a mobile node across the multiple transport instances. A session identifier is assigned by a point of service at the time of initial registration, and is valid only during the lifetime of the registration. A registration state includes local handles to transport instances that are used when sending and receiving media independent handover messages related to the registration.
    Type: Grant
    Filed: November 12, 2006
    Date of Patent: April 17, 2012
    Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventors: Yoshihiro Ohba, Subir Das
  • Publication number: 20120069749
    Abstract: A packet data network gateway device may receive packet network data at a packet data network gateway device; filter the received packet network data to extract information associated with one or more messages in the packet network data; analyze the extracted information; and dynamically determine one or more of policy updates, rules, or thresholds based on the analyzing of the information and information associated with one or more of subscribers, location, existing policies, network operating condition and load.
    Type: Application
    Filed: March 23, 2011
    Publication date: March 22, 2012
    Applicants: KABUSHIKI KAISHA TOSHIBA, TELCORDIA TECHNOLOGIES, INC.
    Inventors: David Famolari, Subir Das, Yoshihiro Ohba
  • Publication number: 20120020204
    Abstract: A system and method for network selection procedures for simultaneous network connectivity through multiple accesses comprises obtaining stored and registered PLMNs, determining whether PLMNs are both stored PLMN for access technology type Ai and registered PLMN, when no PLMNs are both, performing PLMN selection using a standard procedure, when only one PLMN is both, determining whether the PLMN satisfies a condition, and when the PLMN satisfies the condition, attempting to connect to the PLMN, and when more than one PLMN is both, creating a set of PLMNs, selecting one PLMN that satisfies the condition, from the set PLMN, attempting to connect to the selected PLMN, and when attempting to connect fails, removing the selected PLMN from the set, and selecting another PLMN. In one aspect, the PLMN that minimizes changes is selected. In one aspect, the PLMN that provides access to a larger number of access technologies is selected.
    Type: Application
    Filed: January 13, 2011
    Publication date: January 26, 2012
    Applicants: Kabushiki Kaisha Toshiba, Telcordia Technologies, Inc.
    Inventors: Raquel Morera, Subir Das, Yoshihiro Ohba
  • Patent number: 8068460
    Abstract: The present invention relates to the use of buffering packets for the mobile node at an access router or network node near the edge of the network that the mobile is moving away from or towards. The buffered packets are then forwarded to the mobile node once the handoff process is completed. This invention also relates to the use of buffering packets originating from the mobile node during the handoff process. The buffered packets are then forwarded to their intended destinations once the handoff process is completed. The buffering system is used in conjunction with existing mobility protocols, access protocols, or as an independent network or link layer mechanism.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: November 29, 2011
    Assignee: Toshiba America Research, Inc.
    Inventors: Victor Fajardo, Yoshihiro Ohba, Kenichi Taniuchi, Ashutosh Dutta
  • Publication number: 20110271110
    Abstract: According to some embodiments, a key management apparatus for deploying in a smart grid system adapted to receive metering data from smart meters connected to at least one relay via a network, includes: a key control mechanism that derives a key array of individual purpose specific keys from one master key such that the purpose specific key in the key array are each independent cryptographic keys for each specific usage in an application or for each application if there is only one specific usage in an application.
    Type: Application
    Filed: March 23, 2011
    Publication date: November 3, 2011
    Applicants: TELCORDIA TECHNOLOGIES INC., KABUSHIKI KAISHA TOSHIBA
    Inventors: Yoshihiro Ohba, Mitsuru Kanda, Subir Das, David Famolari
  • Publication number: 20110267415
    Abstract: A light source unit includes a surface-emitting laser array including light emitting units; and an apertured member provided on a light path of light beams emitted from the surface-emitting laser array, the apertured member including an aperture. In at least one direction, an intensity distribution of interference patterns caused by the light beams passing through the aperture includes an equal number of crests and troughs.
    Type: Application
    Filed: April 20, 2011
    Publication date: November 3, 2011
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yoshihiro OHBA, Satoru Sugawara, Toshihiro Ishii
  • Publication number: 20110249653
    Abstract: Systems and methods are described for secure and seamless roaming between internal and external networks. Double and triple tunnels may be used to connect a mobile node to a correspondent host. A mobile node may include the ability to connect to two networks simultaneously to enable seamless roaming between networks.
    Type: Application
    Filed: June 21, 2011
    Publication date: October 13, 2011
    Applicants: TELCORDIA TECHNOLOGIES INC., TOSHIBA AMERICA RESEARCH INC. (TARI)
    Inventors: Kenichi TANIUCHI, Tao ZHANG, Prathima AGRAWAL, Ashutosh DUTTA, Sunil MADHANI, Shinichi BABA, Kensaku FUJIMOTO, Yasuhiro KATSUBE, Toshikazu KODAMA, Yoshihiro OHBA
  • Publication number: 20110228035
    Abstract: A disclosed surface-emitting laser module includes a surface-emitting laser formed on a substrate to emit light perpendicular to its surface, a package including a recess portion in which the substrate having the surface-emitting laser is arranged, and a transparent substrate arranged to cover the recess portion of the package and the substrate having the surface-emitting laser such that the transparent substrate and the package are connected on a light emitting side of the surface-emitting laser. In the surface-emitting laser module, a high reflectance region and a low reflectance region are formed within a region enclosed by an electrode on an upper part of a mesa of the surface-emitting laser, and the transparent substrate is slanted to the surface of the substrate having the surface-emitting laser in a polarization direction of the light emitted from the surface-emitting laser determined by the high reflectance region and the low reflectance region.
    Type: Application
    Filed: March 16, 2011
    Publication date: September 22, 2011
    Applicant: RICOH COMPANY, LTD.
    Inventors: Toshihiro Ishii, Satoru Sugawara, Yoshihiro Ohba, Kazuhiro Harasaka, Shunichi Sato, Kazuhiko Adachi
  • Patent number: 8006089
    Abstract: The preferred embodiments provide a novel system and method for reducing authentication delay of a mobile node with a network that includes: employing two EAP runs concurrently to reduce an overall authentication delay. In some embodiments, the two EAP runs are employed for authenticating a particular device identifier of a PaC. In some illustrative embodiments, the two EAP runs are employed for authenticating a particular device identifier of a PaC in relation to connecting to multiple ISPs at the same time.
    Type: Grant
    Filed: November 12, 2006
    Date of Patent: August 23, 2011
    Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventor: Yoshihiro Ohba
  • Patent number: 7978655
    Abstract: Systems and methods are described for secure and seamless roaming between internal and external networks. Double and triple tunnels may be used to connect a mobile node to a correspondent host. A mobile node may include the ability to connect to two networks simultaneously to enable seamless roaming between networks.
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: July 12, 2011
    Assignees: Toshiba America Research Inc., Telcordia Technologies, Inc.
    Inventors: Kenichi Taniuchi, Tao Zhang, Prathima Agrawal, Ashutosh Dutta, Sunil Madhani, Shinichi Baba, Kensaku Fujimoto, Yasuhiro Katsube, Toshikazu Kodama, Yoshihiro Ohba
  • Patent number: 7974602
    Abstract: A system and method are provided by which a network operator is able to detect fraudulent use of a subscriber's terminal, regardless of whether or not the subscriber is aware of the fraudulent use of her terminal. Detecting unauthorized terminal use in a wireless network includes recording a history of terminal location and registration patterns, analyzing the recorded history of location and registration patterns of the terminal, monitoring current location and registration patterns of the terminal, and requesting clarification when a deviation between said statistical analysis of the location and registration patterns of said terminal and said current location and registration patterns of said terminal is detected.
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: July 5, 2011
    Assignees: Toshiba America Research Inc., Telcordia Technologies, Inc.
    Inventors: Prathima Agrawal, Nobuyasu Nakjima, Yoshihiro Ohba, Faramak Vakil
  • Publication number: 20110086999
    Abstract: The invention provides a thiazolothiazole compound represented by the following Formula (I). In Formula (I), Ar1 represents a substituted or unsubstituted aromatic group; R1 represents a hydrogen atom, an alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group; and n represents an integer of 0 or 1. The invention further provides a thiazolothiazole polymer having the thiazolothiazole compound as a polymerization unit thereof.
    Type: Application
    Filed: May 14, 2010
    Publication date: April 14, 2011
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Hidekazu Hirose, Takeshi Agata, Katsuhiro Sato, Kazuaki Sato, Yoshihiro Ohba
  • Patent number: 7910748
    Abstract: An organic electroluminescent device with a pair of electrodes having an anode and a cathode, and one or more organic compound layers disposed therebetween. One of the anode or the cathode is transparent or semitransparent.
    Type: Grant
    Filed: November 27, 2009
    Date of Patent: March 22, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshihiro Ohba, Kazuaki Sato, Mieko Seki, Hidekazu Hirose, Takeshi Agata, Koji Horiba, Akira Imai, Tadayoshi Ozaki, Yohei Nishino, Hirohito Yoneyama, Daisuke Okuda, Toru Ishii, Kiyokazu Mashimo, Katsuhiro Sato
  • Patent number: 7902382
    Abstract: A thiophene-containing compound polymer represented by Y represents a bivalent hydrocarbon group; R5 represents a hydrogen atom; Z represents a bivalent hydrocarbon group; m represents 1; p represents an integer of 5 to 5,000; B and B? each represent OCH2CH2OH, and A represents a group represented by the following formula (X-III): Ar1 is a substituted or unsubstituted monovalent aromatic group; R1 to R3 each independently represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group; and n representing an integer of 1 to 5.
    Type: Grant
    Filed: November 27, 2009
    Date of Patent: March 8, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshihiro Ohba, Kazuaki Sato, Mieko Seki, Hidekazu Hirose, Takeshi Agata, Koji Horiba, Akira Imai, Tadayoshi Ozaki, Yohei Nishino, Hirohito Yoneyama, Daisuke Okuda, Toru Ishii, Kiyokazu Mashimo, Katsuhiro Sato
  • Publication number: 20100207364
    Abstract: A vehicle air bag device may include an air bag having an integrally formed inflator insertion portion 4 into which an inflator 5 for discharging a gas is inserted. A bracket that is formed to attach the inflator to a vehicle body includes an inflator side mounting portion 8 mounted onto an outer side of the inflator insertion portion so as to partially cover the inflator insertion portion partially. A strip-form body 10 is disposed over and attaches the bracket, the inflator insertion portion, and the inflator such that the strip-form body. The strip-form body and the inflation insertion portion are displaced from each other by a step formed by the bracket, thereby forming a gap disposed between the strip-form body and said inflation insertion portion. A seal portion formed on the bracket is sealingly aligned with the strip-form body and seals the gap.
    Type: Application
    Filed: October 9, 2008
    Publication date: August 19, 2010
    Applicant: AUTOLIV DEVELOPMENT ABE
    Inventors: Takashi Arima, Hideho Fukuda, Yoshihiro Ohba, Hironori Arakawa
  • Patent number: 7763737
    Abstract: The present invention provides a carbazole compound represented by the following formula (I): wherein each Ar1 independently represents a substituted or unsubstituted monovalent aromatic group or an aromatic group containing a heteroring, and R1 and each R2 independently represent a hydrogen atom, an alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: July 27, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hidekazu Hirose, Koji Horiba, Takeshi Agata, Katsuhiro Sato, Kazuaki Sato, Yoshihiro Ohba
  • Publication number: 20100165947
    Abstract: In some of the preferred embodiments, a method for network discovery of a mobile device to use at least one of a plurality of access networks within an IP network includes: obtaining specified network information in the vicinity of a given location based on a set of criteria when a mobile is connected to the IP network from any location.
    Type: Application
    Filed: April 20, 2009
    Publication date: July 1, 2010
    Applicants: TOSHIBA AMERICA RESERCH, INC., TELCORDIA TECHNOLOGIES, INC.
    Inventors: Kenichi Taniuchi, Yoshihiro Ohba, Subir Das, Sunil Madhani, Ashutosh Dutta
  • Publication number: 20100137553
    Abstract: A thiophene-containing compound polymer represented by Y represents a bivalent hydrocarbon group; R5 represents a hydrogen atom; Z represents a bivalent hydrocarbon group; m represents 1; p represents an integer of 5 to 5,000; B and B? each represent OCH2CH2OH, and A represents a group represented by the following formula (X-III): Ar1 is a substituted or unsubstituted monovalent aromatic group; R1 to R3 each independently represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group; and n representing an integer of 1 to 5.
    Type: Application
    Filed: November 27, 2009
    Publication date: June 3, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yoshihiro Ohba, Kazuaki Sato, Mieko Seki, Hidekazu Hirose, Takeshi Agata, Koji Horiba, Akira Imai, Tadayoshi Ozaki, Yohei Nishino, Hirohito Yoneyama, Daisuke Okuda, Toru Ishii, Kiyokazu Mashimo, Katsuhiro Sato