Patents by Inventor Steven C. Chang

Steven C. Chang 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).

  • Patent number: 5779682
    Abstract: A device for preventing needle sticking injuries to a user's finger or hand. The device is made of resin or a similar material having a hardened surface but flexible. The device can be formed as a circularly shaped plate or a polygon shaped plate. The plate has a plurality of angularly and radially outward slits placed at its center. The slits are designed to allow the penetration of a needle cap through the plate and provide a tight grip onto the needle cap and shields the needle users from sticking accidents and injuries.
    Type: Grant
    Filed: August 4, 1997
    Date of Patent: July 14, 1998
    Inventor: Steven C. Chang