Patents by Inventor Wing-Kwong S. Yu

Wing-Kwong S. Yu 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).

  • Cannula cap
    Patent number: 5190532
    Abstract: A cannula cap is provided with a peripheral flange about its opening through which a needle is inserted. If the cannula cap is to be reinserted over the needle after the syringe is used, the flange provides protection to the user's fingers by blocking the needle from sticking the user as he or she is reinserting the cannula cap over the syringe needle.
    Type: Grant
    Filed: May 8, 1992
    Date of Patent: March 2, 1993
    Inventor: Wing-Kwong S. Yu