Patents by Inventor Bartholomeus W. J. Van der AA

Bartholomeus W. J. Van der AA 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).

  • Hypodermic needle with a protrusion
    Patent number: 5858006
    Abstract: Hypodermic needle 2 is to be introduced between the skin and the tissue adjacent to the skin. To separate the skin from the tissue, cartilage or bone below the skin and to prevent the tip 6 of the needle 2 from piercing the tissue below the skin this invention discloses providing the extremity 6 of the needle with a protrusion 4. To prevent damage to the living being in which the needle 2 is introduced the transition of the protrusion 4 to the needle is smooth in all directions. The protrusion 4 is provided on that side of the needle which will be adjacent to the tissue, cartilage or bone of the living being.
    Type: Grant
    Filed: October 26, 1993
    Date of Patent: January 12, 1999
    Assignee: Texas Instruments Incorporated
    Inventors: Bartholomeus W. J. Van der AA, Franciscus H. C. Benning