Patents Assigned to Silman Invest & Trade Ltd.
  • Drinking straw
    Patent number: 9572444
    Abstract: The invention relates to a drinking straw comprising: a thermoplastic wall having an elongate container portion; liquid permeable closures closing off the container portion; at least one effervescent tablet disposed within the container portion such that a clearance is left between the inner side of the wall and the at least one tablet; a hygroscopic filler disposed at both sides of the at least one tablet within the container portion.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: February 21, 2017
    Assignee: Silman Invest & Trade Ltd.
    Inventors: Ferenc Ecseri, Monika Ecseri
  • Drinking straw and method and device for manufacturing a drinking straw
    Patent number: 9271590
    Abstract: A drinking straw comprises a thermoplastic tube and an active ingredient in the tube, releasable in a liquid drawn through the tube. The active ingredient is held in place between branched portions of the straw defined by neighbouring recesses formed in the tube and an inner seam connecting the neighbouring recesses. The branched portions are spaced from the ends of the straw. A device and method for making the drinking straw are disclosed as well.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: March 1, 2016
    Assignee: Silman Invest & Trade Ltd.
    Inventors: Ferenc Ecseri, Monika Ecseri