Patents by Inventor San-Yih Cheng

San-Yih Cheng 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).

  • Computer mouse
    Patent number: 5157381
    Abstract: A computer mouse has a unique push-button configuration which enhances button assignment flexibility while remaining user friendly. Three buttons are provided with a middle button having a smaller but raised surface area when compared to the other two buttons.
    Type: Grant
    Filed: April 20, 1990
    Date of Patent: October 20, 1992
    Inventor: San-Yih Cheng