Patents by Inventor Shoichiro Shin

Shoichiro Shin 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).

  • Method and apparatus for measuring particle-size distribution
    Patent number: 6281972
    Abstract: An apparatus for measuring particle size distribution comprises an electric mobility classifying section (11) that comprises an outside electrode (12), an inside electrode (13) and an annular cylindrical hollow portion (14) defined by the outside and inside electrodes, a particle size measuring section (21) that is disposed under the electric mobility classifying section for measuring particle size distribution, and a guide frame (31) that allows the electric mobility classifying section and the annular cylindrical hollow section to communicate with each other. A sample gas containing charged particles under measurement is supplied from above into the annular cylindrical hollow section of the electric mobility classifying section to classify the particles according to their electric mobilities. The gas containing the classified particles is supplied into the particle size measuring section via the guide frame to directly obtain approximate particle sizes.
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: August 28, 2001
    Assignee: Japan as represented by Director General of Agency of Industrial Science and Technology
    Inventors: Kensei Ebara, Shoichiro Shin