Patents by Inventor Ikuroh Ohtsu

Ikuroh Ohtsu 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).

  • Cooling device and cooling system for an information recording and play-back device of an external memory apparatus
    Patent number: 5456632
    Abstract: An external memory apparatus for an information recording and play-back device, with the external memory apparatus having an improved cooling arrangement. In particular, a cooling fan is disposed inside of the housing, at a location spaced from a wall of the housing, with an exhaust outlet provided having a smaller area than that of the cooling fan. The exhaust outlet is preferably connected to the cooling fan by a duct, with the cooling system allowing the overall size of the external memory apparatus to be minimized.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: October 10, 1995
    Assignee: Ricoh Company, Ltd.
    Inventors: Ikuroh Ohtsu, Toshiya Tsukasa, Junichi Watanabe