Patents by Inventor Kiichi Tanaka

Kiichi Tanaka 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).

  • Recording and reproducing apparatus including a nonvolatile memory which includes a first area for file management tables and a second area for data and a control unit
    Patent number: 6269434
    Abstract: A recording and reproducing apparatus includes a nonvolatile memory which acts as a recording medium; and a control unit for executing recording and reproduction on the nonvolatile memory; wherein the nonvolatile memory includes a first area for recording management information of whole of the nonvolatile memory and a second area for recording data of respective files; wherein the first area has a first file management table produced at the time of start of recording of the files and including at least a first management area for managing information on addresses of start sectors of the files and a second management area for managing information on usable space areas of the files; wherein the second area has a second file management table produced at a leading portion of each of sectors of each of the files on a real-time basis during recording of the files and formed by link information on corresponding ones of the sectors; wherein when the control unit executes recording and reproduction on the nonvolatile
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: July 31, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Kiichi Tanaka
  • Ringing choke converter using single switching element
    Patent number: 4862338
    Abstract: A ringing choke converter which comprises an output transformer having a primary winding, a secondary winding, and a feedback winding and/or a control winding, a main switching transistor having its collector connected to the primary winding and its base and emitter connected to the feedback winding, and a rectifying diode connected to the secondary winding. In accordance with the present invention, a control transistor is connected between the base and emitter of the main transistor; a time constant circuit composed of a resistor and a capacitor is connected across the feedback winding or control winding; the connection point between the resistor and the capacitor is connected to the base of the control transistor; and an adjusting circuit for adjusting the charging time constant of the capacitor in accordance with the output voltage is connected to the connection point.
    Type: Grant
    Filed: September 21, 1987
    Date of Patent: August 29, 1989
    Assignee: Shindengen Kogyo Kabushiki Kaisha
    Inventor: Kiichi Tanaka
  • Method of manufacturing cation exchanger
    Patent number: 4077923
    Abstract: The method of manufacturing a cation exchanger which includes chopping up waste tires and then successively heat treating and then sulfonating the resultant product.
    Type: Grant
    Filed: November 25, 1975
    Date of Patent: March 7, 1978
    Assignee: Nittan Company, Limited
    Inventors: Kiichi Tanaka, Noboru Gomyo, Kayoko Usui, Yasuyo Takahata, Masaaki Tamayama