Patents by Inventor Tadeusz A. Szymczakowski

Tadeusz A. Szymczakowski 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).

  • Stopcocks
    Patent number: 5832959
    Abstract: A stopcock comprises a hollow barrel which receives in a rotatable manner a co-operating tap. A section of the tap is formed with holes which allow communication between selected hollow spigots extending from the barrel. A further section of the tap of larger diameter than the section is formed with indents which engage with detents formed on a large diameter section of the barrel to provide a positive indication when the tap is rotated within the hollow barrel to one or more selected positions.
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: November 10, 1998
    Assignee: Becton Dickinson Infusion Therapy AB
    Inventors: Tadeusz A. Szymczakowski, Ulf H. Wahlberg