Patents by Inventor Yonezo Ono

Yonezo Ono 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).

  • Hollow needle for use in measurement of viscosity of liquid
    Patent number: 5222497
    Abstract: A hollow needle for use in measurement of viscosity of liquids, includes at least one small and slender straight tube and a hub fixed thereto and provided with a connector member. The tube includes a piercing portion and a suction portion extending therefrom to form an opening for suction of a liquid to be measured. The piercing portion has a sharp edge at its one end and is fixed to the hub at the other end, the inside diameter (D) of a bore of the tube including the edge of the piercing portion being made uniform over a specified length (L) of the tube defined by equation: L/D=50 to 500.
    Type: Grant
    Filed: January 23, 1992
    Date of Patent: June 29, 1993
    Assignee: Nissho Corporation
    Inventor: Yonezo Ono