Patents by Inventor Toshiya Iwanami

Toshiya Iwanami 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).

  • Apparatus for absorbing machinery sound
    Patent number: 6244377
    Abstract: A machinery sound absorbing apparatus includes a machine which generates a machinery sound, and a sound absorbing unit provided above the machine to have a convex shape in an upward direction. The sound absorbing unit includes a reflection plane as an underside surface opposing to the machine. The reflection plane is formed of a sound absorbing material and is a set of plane elements, each of which has an angle of 30 degree or less with respect of a vertical direction. Also, the reflection plane is smooth to a wavelength of the machinery sound.
    Type: Grant
    Filed: December 10, 1999
    Date of Patent: June 12, 2001
    Assignee: NEC Corporation
    Inventor: Toshiya Iwanami