Patents by Inventor Torsten Silander

Torsten Silander 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).

  • Catheter
    Patent number: 4434797
    Abstract: A catheter intended to be inserted in a body duct, vessel or cavity in order to maintain the passage of liquid, gas or solid substances.The catheter (1) is made of plastic. The catheter (1) is characterized in that it is provided with an outer casing (2-5), which entirely or partially covers the cathether (1) and consists of a hydrophilic plastic substance capable of absorbing liquid and thereby to increase its volume, i.e. to swell, so that the catheter (1) maintains its position after its insertion into a body duct, vessel or cavity.
    Type: Grant
    Filed: November 22, 1982
    Date of Patent: March 6, 1984
    Assignee: AB Tesi
    Inventor: Torsten Silander