Patents by Inventor Desanka Gacesa

Desanka Gacesa 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).

  • Security element
    Patent number: 7054043
    Abstract: The invention relates to an object of value with a security element having at least a first and a second liquid-crystalline material, the first material having thermochromic properties and the second material an optically variable effect.
    Type: Grant
    Filed: September 18, 2003
    Date of Patent: May 30, 2006
    Assignee: Giesecke & Devrient GmbH
    Inventors: Christoph Mengel, Desanka Gacesa, Max Voit
  • Security element
    Publication number: 20060023132
    Abstract: The invention relates to an object of value with a security element having at least a first and a second liquid-crystalline material, the first material having thermochromic properties and the second material an optically variable effect.
    Type: Application
    Filed: September 18, 2003
    Publication date: February 2, 2006
    Applicant: Giesecks & Devrient GmbH
    Inventors: Christoph Mengel, Desanka Gacesa, Max Voit