Patents by Inventor Akiyoshi Fujihara

Akiyoshi Fujihara 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).

  • Line concentrator, network-capable apparatus, and communication system
    Patent number: 7480729
    Abstract: In a system configured by connecting a printer (2) and a host device (3) to a line concentrator (1), an arrangement is made such that the printer (2) is held in power save mode for a for a long time to achieve power savings. When transferring to the power save mode, the printer (2) transmits internal information to the line concentrator (1). The line concentrator (1) stores this internal information in association with the printer (2). When an inquiry about the internal information is made from the host device (3) to the printer (2), the line concentrator (1) does not transmit this inquiry to the printer (2) but returns a response (proxy response) to the host device (3) by using the internal information stored in the line concentrator (1) itself. This makes it unnecessary to cancel the power save mode of the printer (2) as a result of the inquiry.
    Type: Grant
    Filed: March 2, 2004
    Date of Patent: January 20, 2009
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Akiyoshi Fujihara
  • Line concentrator, network-capable apparatus, and communication system
    Publication number: 20060191435
    Abstract: In a system configured by connecting a printer (2) and a host device (3) to a line concentrator (1), an arrangement is made such that the printer (2) is held in power save mode for a for a long time to achieve power savings. When transferring to the power save mode, the printer (2) transmits internal information to the line concentrator (1). The line concentrator (1) stores this internal information in association with the printer (2). When an inquiry about the internal information is made from the host device (3) to the printer (2), the line concentrator (1) does not transmit this inquiry to the printer (2) but returns a response (proxy response) to the host device (3) by using the internal information stored in the line concentrator (1) itself. This makes it unnecessary to cancel the power save mode of the printer (2) as a result of the inquiry.
    Type: Application
    Filed: March 2, 2004
    Publication date: August 31, 2006
    Inventor: Akiyoshi Fujihara
  • Developing unit for electrophotography with toner sensor
    Patent number: 4868601
    Abstract: A developing unit for electrophotography has a magnet roller disposed opposite to its photosensitive drum and a toner sensor disposed near the magnet roller and displaced from the position of one of the poles of the magnet roller by 5.degree.-15.degree. in the direction of the photosensitive drum.
    Type: Grant
    Filed: February 25, 1988
    Date of Patent: September 19, 1989
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kenichi Morimoto, Akiyoshi Fujihara