Patents by Inventor Kenji Wasa

Kenji Wasa 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).

  • Crystal defects analyzer
    Patent number: 4448525
    Abstract: A crystal defect analyzer comprises acousto-electric transducer means disposed in close adherence to a sample to be analyzed through the medium of a filter layer which functions to intercept light or electrons or particles emitted from said excitation means and to transmit only acoustic waves produced within said sample by excitation, thereby it can attain higher response and sensitivity, smaller size, higher resistance to vibration and superior operationality.
    Type: Grant
    Filed: June 26, 1981
    Date of Patent: May 15, 1984
    Assignee: Semiconductor Research Foundation
    Inventors: Nobuo Mikoshiba, Kazuo Tsubouchi, Kenji Wasa