Patents by Inventor Yoshikatsu Kumisuwa

Yoshikatsu Kumisuwa 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).

  • Maintenance scheduling system, maintenance scheduling method, and image forming apparatus
    Patent number: 8099310
    Abstract: A maintenance scheduling system that lays out a maintenance schedule for an image forming apparatus includes an actual-use-result acquiring unit that acquires actual use result information of consumables, a failure-probability-distribution estimating unit that estimates failure probability distributions of the consumables, a cost-related-constant acquiring unit that acquires cost related constants of the consumables, a first cost calculating unit that calculates, for each of plural visit interval values, cost per unit time required for the image forming apparatus, a visit-interval calculating unit that calculates the visit interval value giving minimum cost, a second cost calculating unit that calculates, for each of plural replacement interval values, cost per unit time required for the image forming apparatus, a replacement-interval calculating unit that calculates a calculated replacement interval value, and a maintenance-schedule presenting unit that presents the next visit time and at least one of the co
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: January 17, 2012
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Yoshikatsu Kumisuwa, Rintaro Nakane, Hiroyo Katou