Patents by Inventor Hitoshi Koshimizu

Hitoshi Koshimizu 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).

  • Endless-loop tape cassette with backstop and transmission mechanism
    Patent number: 5517377
    Abstract: An endless-loop tape cassette includes an endless-loop magnetic tape; and a disk which has a portion of the magnetic tape wound in a stack thereon, and which is rotatable along with one of a supply reel shaft and a take-up reel shaft. In addition, a rotating member is provided, which is rotatable along with the other one of the supply reel shaft and the take-up reel shaft. A transmission mechanism transmits a rotary movement between the disk and the rotating member; and a backstop is engageable with at least one of the disk, the rotating member and the transmission mechanism.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: May 14, 1996
    Assignee: TDK Corporation
    Inventors: Hiroki Suzuki, Takateru Satoh, Hitoshi Koshimizu
  • Cement-additive for inhibiting concrete-deterioration
    Patent number: 5435846
    Abstract: A cement additive for inhibiting concrete deterioration contains as an effective component a powder mixture of an inorganic cation exchanger, such as a highly calcium-substituted zeolite, and an inorganic anion exchanger, such as hydrocalumite. The cement additive inhibits the alkali-aggregate reaction and the corrosion of reinforcing steel, thereby protecting concrete constructions from deterioration.
    Type: Grant
    Filed: February 18, 1994
    Date of Patent: July 25, 1995
    Assignees: Nippon Chemical Industrial Co., Ltd., Railway Technical Research Institute
    Inventors: Hidenobu Tatematsu, Tohru Nakamura, Hitoshi Koshimizu, Toshihiko Morishita, Hideki Kotaki