Patents by Inventor Shmuel Movshovich

Shmuel Movshovich 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).

  • Porous tubes and hollow profile structures and method of making same
    Patent number: 4182582
    Abstract: A method of producing porous tubes and hollow profile structures is characterized by coextruding different materials each through a separate section of a tube-forming extrusion die, one material being pore-forming and producing a porous wall section extending lengthwise of the extruded tube for providing a means of dispersing therethrough a fluid flowing internally of the tube, the other material being non-pore-forming or less pore-forming and producing a non-porous or less porous wall section extending lengthwise of the tube for providing mechanical strength to the tube.Also disclosed are a number of porous tube and hollow profile structures including various arrangements of porous and non-porous wall sections.
    Type: Grant
    Filed: January 17, 1977
    Date of Patent: January 8, 1980
    Assignee: A. T. Ramot Plastics Ltd.
    Inventors: Anat Youval, Moshe A. Frommer, Shmuel Movshovich, Adriana Cojocaro