Patents by Inventor Jan Cerajewski

Jan Cerajewski 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).

  • Process and device for manufacturing laminated plastic cards
    Patent number: 6645347
    Abstract: The invention concerns a process and a press for manufacturing laminated plastic cards, such as check guarantee cards, credit cards and the like of several films to be pressed together with each other. Moreover, operations are conducted with two compression plates which are movable relative to each other which accommodate in the compression slot the films to be pressed together with their pressure plates with the interposition of at least one compression pad. It is essential that this compression pad is held rigidly or displaceably on the press.
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: November 11, 2003
    Assignee: Robert Bürkle GmbH
    Inventors: Wolfgang Stein, Jan Cerajewski
  • Process and device for manufacturing laminated plastic cards
    Publication number: 20010015264
    Abstract: The invention concerns a process and a press for manufacturing laminated plastic cards, such as check guarantee cards, credit cards and the like of several films to be pressed together with each other. Moreover, operations are conducted with two compression plates which are movable relative to each other which accommodate in the compression slot the films to be pressed together with their pressure plates with the interposition of at least one compression pad. It is essential that this compression pad is held rigidly or displaceably on the press.
    Type: Application
    Filed: December 20, 2000
    Publication date: August 23, 2001
    Inventors: Wolfgang Stein, Jan Cerajewski