Patents Assigned to “P1”Handels GmbH
  • Stopper of foamed thermoplastic synthetic material
    Patent number: 6528152
    Abstract: A stopper of foamed thermoplastic synthetic material for sealing bottles containing foodstuffs or beverages, with an inorganic pigment which is resistant to and suitable for foodstuffs and which changes color under the influence of heat being added to the synthetic material. A method of applying a cork stamp on the stopper which is exposed to the action of heat to color-activate the pigment in areas corresponding to a given pattern of a cork stamp.
    Type: Grant
    Filed: January 18, 2000
    Date of Patent: March 4, 2003
    Assignee: “P1”Handels GmbH
    Inventor: Gerhard Piriwe