Patents by Inventor Hirokazu Haga

Hirokazu Haga 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: 4825807
    Abstract: An apparatus for applying a powder of anti-sticking agent on a coil of oriented electrical steel strip formed on a coiler comprises a movable assembly moving closer to and away from the coiler, a stationary hood attached to the movable assembly and having slit-like suction ports provided along the walls thereof, one end of the suction ports opening toward the coiler, a duct-collecting duct connected to the slit-like suction ports of the stationary hood, movable hoods provided on the stationary hood to vertically open at the top and bottom of the open end of the stationary hood, and a group of electrostatic powder spray guns directed toward the coiler in the stationary hood in which they are disposed. The movable assembly recedes and the movable hoods open as the diameter of the coil increases so that a given space is always maintained between the surface of the coiled strip and the movable hoods.
    Type: Grant
    Filed: July 13, 1988
    Date of Patent: May 2, 1989
    Assignee: Nippon Steel Corporation
    Inventors: Motoharu Nakamura, Takaaki Ohsawa, Hirokazu Haga, Akira Tanabe
  • Patent number: 4631479
    Abstract: A novel tape testing apparatus of the type which senses errors, stops the tape, and causes the error to be moved to an error-correction or an error-inspection station. The apparatus of the invention is characterized by means to rapidly try to remove the error by additional passes through an error removal station and then, if necessary bring the error-bearing portion of the tape precisely under an inspection station by a precise distance-metering process.
    Type: Grant
    Filed: April 18, 1983
    Date of Patent: December 23, 1986
    Assignee: Graham Magnetics Inc.
    Inventor: Hirokazu Haga