Patents by Inventor Hiroshi Kotan

Hiroshi Kotan 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).

  • Pen recorder
    Patent number: 4649399
    Abstract: An automatically balancing type pen recorder, which is compact in size and is highly reliable in operation, comprises an integral servo unit formed of a single printed circuit board which incorporates therein a pen carriage and an automatic balancing mechanism adapted to move a recording chart in a direction perpendicular to the direction of feed of the chart, in response to the magnitude of a measuring signal.
    Type: Grant
    Filed: March 3, 1986
    Date of Patent: March 10, 1987
    Assignee: Yokogawa Hokushin Electric Corporation
    Inventors: Toshio Kimura, Shuichi Nakagawa, Teruhiko Tokumo, Hiroyuki Yamamoto, Hiroshi Kotan, Hiroshi Otsu, Tetsuya Satoh