Patents by Inventor William B. Wu

William B. 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).

  • Sack net for printing press anti-smear transfer cylinder
    Patent number: 5413044
    Abstract: A ready-made fabric sack with an elastic string around the periphery of the sack opening to be placed over a transfer cylinder in a printing press. When placed over the transfer cylinder, the inherent resiliency of the fabric and string causes the sack to envelop the cylinder to provide a resilient fabric surface which prevents smearing and streaking of wet printed sheets.
    Type: Grant
    Filed: September 4, 1992
    Date of Patent: May 9, 1995
    Inventors: William B. Wu, Brian Yu
  • Conical shape insert for pump bottles
    Patent number: D887844
    Type: Grant
    Filed: June 16, 2018
    Date of Patent: June 23, 2020
    Inventor: William B. Wu