Patents by Inventor Ching-Jou Lin

Ching-Jou Lin 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).

  • Screwdriver
    Patent number: 5052253
    Abstract: A screwdriver comprising a handle having a sleeve mounted on the blade thereof for releasably fastening a screw head retainer socket to secure the device to a screw to be fastened or loosened. The handle is comprised of two sections which are permitted to rotate against each other.
    Type: Grant
    Filed: August 1, 1990
    Date of Patent: October 1, 1991
    Inventor: Ching-Jou Lin