Patents by Inventor Giselher DORFF

Giselher DORFF 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).

  • Publication number: 20240025200
    Abstract: A method for manufacturing the security element transfer material, a method for the register-accurate transfer of security elements from the security element transfer material to a value document substrate, and a value document which was equipped with a security element while employing the security element transfer material, wherein the security element transfer material has a temporary carrier material and a plurality of security elements and a plurality of register mark elements which are arranged on a main area of the temporary carrier material and have a layered composite structure. Each register mark element represents a register mark or contains a register mark, and each register mark is assigned to at least one security element. Apart from the security elements and the register mark elements, the temporary carrier material is free from layered composite material.
    Type: Application
    Filed: August 27, 2021
    Publication date: January 25, 2024
    Inventors: Bjorn TEUFEL, Josef SCHINABECK, Giselher DORFF
  • Patent number: 11654709
    Abstract: An optically variable security element has a multicolored, reflective areal region including a first relief structure disposed at a higher level than a second relief structure. The first relief structure has a first ink coating and the second relief structure has a second, different ink coating. The two relief structures overlap in an overlap region. The first ink coating of the first relief structure is disposed at a higher level in the overlap region and has at least one recess the dimension of which is more than 140 ?m. The first ink coating comprises an edge region adjoining the recess, and as a bicolor register feature the first relief structure lets the edge region of the first ink coating appear with a first color impression and the second relief structure through the recess lets the second ink coating appear with a second, different color impression in mutual register.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: May 23, 2023
    Assignee: GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH
    Inventors: Kai Herrmann Scherer, Maik Rudolf Johann Scherer, Raphael Dehmel, Michael Rahm, Giselher Dorff, Andreas Rauch, Christian Fuhse, Tobias Sattler
  • Patent number: 11623465
    Abstract: An optically variable security element wherein the areal expansion whereof defines a z direction standing perpendicularly thereon, and has a multicolored, reflective areal region. The areal region includes two relief structures arranged at different height levels in the z direction. The relief structures are each supplied with an ink coating which produce a different color impression. The ink coating of the relief structure disposed at a higher level is configured in the feature region as a regular or irregular grid with grid elements and grid spaces. The dimensions of the grid elements and/or grid spaces are below 140 ?m at least in one direction, so that, in the feature region, for a viewer from at least one viewing angle, the ink coating of the relief structure disposed at a lower level is visible through the grid spaces of the ink coating of the relief structure disposed at a higher level.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: April 11, 2023
    Assignee: GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH
    Inventors: Kai Hermann Scherer, Maik Rudolf Johann Scherer, Raphael Dehmel, Michael Rahm, Giselher Dorff, Andreas Rauch, Christian Fuhse, Tobias Sattler
  • Publication number: 20210283939
    Abstract: An optically variable security element has a multicolored, reflective areal region including a first relief structure disposed at a higher level than a second relief structure. The first relief structure has a first ink coating and the second relief structure has a second, different ink coating. The two relief structures overlap in an overlap region. The first ink coating of the first relief structure is disposed at a higher level in the overlap region and has at least one recess the dimension of which is more than 140 ?m. The first ink coating comprises an edge region adjoining the recess, and as a bicolor register feature the first relief structure lets the edge region of the first ink coating appear with a first color impression and the second relief structure through the recess lets the second ink coating appear with a second, different color impression in mutual register.
    Type: Application
    Filed: July 9, 2019
    Publication date: September 16, 2021
    Inventors: Kai Herrmann SCHERER, Maik Rudolf Johann SCHERER, Raphael DEHMEL, Michael RAHM, Giselher DORFF, Andreas RAUCH, Christian FUHSE, Tobias SATTLER
  • Publication number: 20210268825
    Abstract: An optically variable security element wherein the areal expansion whereof defines a z direction standing perpendicularly thereon, and has a multicolored, reflective areal region. The areal region includes two relief structures arranged at different height levels in the z direction. The relief structures are each supplied with an ink coating which produce a different color impression. The ink coating of the relief structure disposed at a higher level is configured in the feature region as a regular or irregular grid with grid elements and grid spaces. The dimensions of the grid elements and/or grid spaces are below 140 ?m at least in one direction, so that, in the feature region, for a viewer from at least one viewing angle, the ink coating of the relief structure disposed at a lower level is visible through the grid spaces of the ink coating of the relief structure disposed at a higher level.
    Type: Application
    Filed: July 9, 2019
    Publication date: September 2, 2021
    Inventors: Kai Hermann SCHERER, Maik Rudolf Johann SCHERER, Raphael DEHMEL, Michael RAHM, Giselher DORFF, Andreas RAUCH, Christian FUHSE, Tobias SATTLER