Patents by Inventor Shyuichi Ishiwa

Shyuichi Ishiwa 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: 5489180
    Abstract: A vibration damping construction, which is useful when it is applied to a vibration isolation washer or a pressed construction such as an oil pan, a ventilation buffle plate, etc. for an automobile, is disclosed, which is so constructed that raw materials, in each of which a rubber visco-elastic layer or such layers is or are disposed on one or two surfaces of a metal plate, are laminated on each other, so that rubber visco-elastic layers are opposite to each other, and adhered to each other to form a laminated body; rectangular pawls are formed on the raw material at the uppermost layer and the laminated body; rectangular cut-off windows, with which the cut and raised pawls can be engaged, are formed in the raw material at the lowermost layer; and these are laminated on each other and bound in one body by spot connection by means of the pawls.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: February 6, 1996
    Assignees: Toyota Jidosha Kabushiki Kaisha, Nichias Corporation
    Inventors: Sunao Ichihara, Kunihiko Yano, Takahiro Niwa, Shyuichi Ishiwa, Katsunori Ueda