Patents by Inventor Tadanao Itoh

Tadanao Itoh 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).

  • Patent number: 4688624
    Abstract: In the horizontal continuous casting of metal, an upper contact part and a lower contact part of the metal body are horizontally displaced with the inner wall of the tubular chilled mold relative to one another, so that the lower contact part is psoitioned downstream relative to the upper contact part.
    Type: Grant
    Filed: September 16, 1986
    Date of Patent: August 25, 1987
    Assignee: Showa Aluminum Industries K.K.
    Inventors: Kengi Suzuki, Tadanao Itoh, Hiroshi Mitsuhashi, Yuichi Ozawa, Sadao Hasegawa, Takeshi Yamauchi
  • Patent number: 4653571
    Abstract: In the horizontal continuous casting of metal, an upper contact part and a lower contact part of the metal body are horizontally displaced with the inner wall of the tubular chilled mold relative to one another, so that the lower contact part is positioned downstream relative to the upper contact part. Gas pressure is used to displace the contact point.
    Type: Grant
    Filed: July 19, 1985
    Date of Patent: March 31, 1987
    Assignee: Showa Aluminum Industries K.K.
    Inventors: Kengi Suzuki, Tadanao Itoh, Hiroshi Mitsuhashi, Yuichi Ozawa, Sadao Hasegawa, Takeshi Yamauchi
  • Patent number: 4157728
    Abstract: A direct chill casting of metals, particularly hot top casting of aluminum and its alloy, is improved by applying a gas pressure to the metals from directly below the overhang of a feed reservoir for receiving a melt to be cast.The direct chill casting is further improved by supplying a lubricating oil from a slit for conveying the gas to the inner wall of the mold.By using the process and the apparatus according to the invention, ingots having excellent smooth surfaces and reduced segregation can be reliably produced with a reduction in the amount of the lubricating oil used.
    Type: Grant
    Filed: July 29, 1977
    Date of Patent: June 12, 1979
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Ryota Mitamura, Tadanao Itoh
  • Patent number: 4114181
    Abstract: A recording reproducer is disclosed for use with a magnetic card comprising a non-magnetic material such as paper having a coating of a powder of magnetizable material on its back surface. The recording reproducer includes a transducer element such as a magnetic head which translates a magnetic energy into electrical energy or vice versa. In the region of the coating of magnetizable material, a sound track is formed on the card for recording a sound. By moving the magnetic head from a start position toward a terminal position of the sound track while maintaining contact between the head and the track, the sound is reproduced. The magnetic head may be returned instantaneously from the terminal position, or an arbitrary intermediate position between the terminal position, and the start position to the start position, whereby the sound can be repeatedly reproduced by repeating the playback and returning motion.
    Type: Grant
    Filed: October 12, 1976
    Date of Patent: September 12, 1978
    Assignees: Ricoh Company, Ltd., Ricoh Educational Equipment Co., Ltd.
    Inventor: Tadanao Itoh