Patents by Inventor Keng Wu

Keng Wu 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).

  • Screw
    Publication number: 20050069396
    Abstract: A screw includes a head and a shank provided with screwing threads and cutting threads. Each thread of the screwing threads and each thread of the cutting threads are positioned to form an angle ? so that the screw can smoothly move in a wooden object by means of the screwing threads in screwing in the wooden object, lowering screwing toque by means of the cutting threads, and thus enhancing locking force of the screw against the wooden object.
    Type: Application
    Filed: September 30, 2003
    Publication date: March 31, 2005
    Inventor: Keng Wu