Patents by Inventor Perng-Jy Tsai

Perng-Jy Tsai 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).

  • Uniform aerosol deposit sampling device
    Patent number: 7582146
    Abstract: A uniform aerosol deposit sampling device includes a first housing and a second housing. The first housing has an air inlet and a first chamber. The second housing has an air outlet, an second chamber, a filter holder and a flow guiding portion. The filter holder is provided for securing an air-penetratable supporting pad and a filter media. The flow guiding portion is a substantially conical and gradually narrowing. The flow guiding portion has a semi-conical angle ranged from 15 to 85 degrees. So, the flow guiding portion makes the entire air flow smooth and evenly distributed. The aerosols will be evenly distributed and uniformly deposited on the filter media. And, it is easy to evaluate the amount and composition of the aerosols.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: September 1, 2009
    Assignee: Institute of Occupational Safety and Health, Council of Labor Affairs, Executive Yuan
    Inventors: Chane-Yu Lai, Perng-Jy Tsai, Da Toung Tang, Tung-Sheng Shih, Hsin-Ying Lee, Wam Yu Lee
  • Uniform aerosol deposit sampling device
    Publication number: 20080072764
    Abstract: A uniform aerosol deposit sampling device includes a first housing and a second housing. The first housing has an air inlet and a first chamber. The second housing has an air outlet, an second chamber, a filter holder and a flow guiding portion. The filter holder is provided for securing an air-penetratable supporting pad and a filter media. The flow guiding portion is a substantially conical and gradually narrowing. The flow guiding portion has a semi-conical angle ranged from 15 to 85 degrees. So, the flow guiding portion makes the entire air flow smooth and evenly distributed. The aerosols will be evenly distributed and uniformly deposited on the filter media. And, it is easy to evaluate the amount and composition of the aerosols.
    Type: Application
    Filed: September 22, 2006
    Publication date: March 27, 2008
    Inventors: Chane-Yu Lai, Perng-Jy Tsai, Da Toung Tang, Tung-Sheng Shih, Hsin-Ying Lee, Wam Yu Lee