Patents by Inventor Meen-Dou Hoo

Meen-Dou Hoo 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).

  • Fan filter unit with sound-absorbing wedges
    Patent number: 6524064
    Abstract: A fan filter unit includes a housing having a side wall and a top wall with a bell mouth serving as an air inlet and an open bottom to which a filtering net is attached to serve as an air outlet. A centrifugal fan is arranged in the housing to drive the air from inlet. The fan assembly has an output port for driving an air flow toward the air outlet. A guide plate is arranged in the housing for guiding the air flow along the path from the fan assembly to the air outlet. A sound-absorbing structure including a plurality of wedge-shaped elements made of a sound-absorbing material is attached to the side wall. The wedge-shaped elements are arranged in a line for effectively reducing noise level caused by the operation of the fan assembly. A second line of wedge-shaped elements is optionally attached to the side wall with the wedge-shaped elements of the two lines alternating each other.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: February 25, 2003
    Assignee: Industrial Technology Research Institute
    Inventors: Ya-Wen Chou, Ming-Shan Jeng, Meen-Dou Hoo, Fang-Hei Tsau
  • Fan filter unit with sound-absorbing wedges
    Publication number: 20020182060
    Abstract: A fan filter unit includes a housing having a side wall and a top wall with a bell mouth serving as an air inlet and an open bottom to which a filtering net is attached to serve as an air outlet. A centrifugal fan is arranged in the housing to drive the air from inlet. The fan assembly has an output port for driving an air flow toward the air outlet. A guide plate is arranged in the housing for guiding the air flow along the path from the fan assembly to the air outlet. A sound-absorbing structure including a plurality of wedge-shaped elements made of a sound-absorbing material is attached to the side wall. The wedge-shaped elements are arranged in a line for effectively reducing noise level caused by the operation of the fan assembly. A second line of wedge-shaped elements is optionally attached to the side wall with the wedge-shaped elements of the two lines alternating each other.
    Type: Application
    Filed: May 23, 2001
    Publication date: December 5, 2002
    Inventors: Ya-Wen Chou, Ming-Shan Jeng, Meen-Dou Hoo, Fang-Hei Tsau