Patents by Inventor Yasuo Ishizaki

Yasuo Ishizaki 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: 8552833
    Abstract: A security system is provided for managing information stored on mobile wireless devices upon exit from a building. The security system includes an exit system and a device management system. The exit system is configured to detect that a user has requested to exit a building. The exit system is also configured to detect that a particular mobile wireless device is in proximity to the user. The device management system is configured to determine, based upon policy data that specifies attributes of information that should not be removed from the building on mobile wireless devices, information on the mobile wireless device that is to be rendered inaccessible. The device management system is further configured to cause the determined information on the mobile wireless device to be rendered inaccessible. Rendering information on the mobile wireless device inaccessible may include, for example, deleting the information, encrypting the information or re-encrypting the information.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: October 8, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Tetsuro Motoyama, Yasuo Ishizaki
  • Patent number: 8495753
    Abstract: A device management system includes a meeting support system that is configured to generate and transmit a plurality of electronic meeting invitations to a plurality of mobile wireless devices that correspond to a plurality of meeting participants and receive responses indicating whether the plurality of participants will attend the electronic meeting. The device management system receives identification data that identifies one or more documents or information that will be made available to the plurality of participants. The meeting support system determines whether the plurality of participants is authorized to access the one or more electronic documents or information. If any of the participants are not authorized to access any of the electronic documents or information, the meeting support system notifies the meeting organizer. The device management system may also include a meeting session management system that is configured to share information among the plurality of mobile wireless devices.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: July 23, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Tetsuro Motoyama, Yasuo Ishizaki
  • Publication number: 20120072998
    Abstract: A device management system includes a meeting support system that is configured to generate and transmit a plurality of electronic meeting invitations to a plurality of mobile wireless devices that correspond to a plurality of meeting participants and receive responses indicating whether the plurality of participants will attend the electronic meeting. The device management system receives identification data that identifies one or more documents or information that will be made available to the plurality of participants. The meeting support system determines whether the plurality of participants is authorized to access the one or more electronic documents or information. If any of the participants are not authorized to access any of the electronic documents or information, the meeting support system notifies the meeting organizer. The device management system may also include a meeting session management system that is configured to share information among the plurality of mobile wireless devices.
    Type: Application
    Filed: September 16, 2010
    Publication date: March 22, 2012
    Inventors: Tetsuro Motoyama, Yasuo Ishizaki
  • Publication number: 20110304428
    Abstract: A security system is provided for managing information stored on mobile wireless devices upon exit from a building. The security system includes an exit system and a device management system. The exit system is configured to detect that a user has requested to exit a building. The exit system is also configured to detect that a particular mobile wireless device is in proximity to the user. The device management system is configured to determine, based upon policy data that specifies attributes of information that should not be removed from the building on mobile wireless devices, information on the mobile wireless device that is to be rendered inaccessible. The device management system is further configured to cause the determined information on the mobile wireless device to be rendered inaccessible. Rendering information on the mobile wireless device inaccessible may include, for example, deleting the information, encrypting the information or re-encrypting the information.
    Type: Application
    Filed: June 10, 2010
    Publication date: December 15, 2011
    Inventors: Tetsuro Motoyama, Yasuo Ishizaki
  • Patent number: 5144060
    Abstract: An emulsifying agent for emulsion polymerization comprising at least one compound selected from the group consisting of (i) betaine esters of polyoxyalkylene alkyl ethers, (ii) betaine esters of polyoxyalkylene alkylphenyl ethers, (iii) betaine esters of polyoxyalkylene dialkylphenyl ethers, (iv) betaine esters of polyoxyalkylene phenyl ethers having two or more benzene nuclei, and (v) betaine esters of polyoxyalkylene polyol ethers. This emulsifying agent is suitable for use in the emulsion polymerization of polymer emulsions capable of forming a film having an excellent water resistance, transparency, and smoothness.
    Type: Grant
    Filed: August 15, 1990
    Date of Patent: September 1, 1992
    Assignee: Lion Corporation
    Inventors: Hiroshi Morita, Eiichi Hirota, Yasuo Ishizaki
  • Patent number: 4943612
    Abstract: An ultra-fine particulated polymer latex having an average particle size of 100 nm or less, a crosslinked structure and a glass transition temperature lower than a value calculated by a weight fraction method.
    Type: Grant
    Filed: December 3, 1987
    Date of Patent: July 24, 1990
    Assignee: Lion Corporation
    Inventors: Hiroshi Morita, Eiichi Hirota, Yasuo Ishizaki
  • Patent number: 4412945
    Abstract: A high concentration surfactant slurry, containing at least 50 wt. % of a higher alcohol ethoxylate sulfate salt, is provided. This slurry has incorporated therein a polyoxyethylene alkyl ether having an average molecular weight of about 4,000 to 10,000 and an alkyl group of 8-16 carbon atoms. The slurry has a reduced viscosity and is not affected by the temperature, with the result that it can be handled easily at low temperatures. It also exhibits no phase separation, even when it is stored over a long period of time.
    Type: Grant
    Filed: January 4, 1982
    Date of Patent: November 1, 1983
    Assignee: Lion Corporation
    Inventors: Masatoshi Takahashi, Mituo Sugiyama, Osamu Toisawa, Yasuo Ishizaki