Patents by Inventor Oliver Tretzack

Oliver Tretzack 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).

  • Method for producing moulded articles
    Patent number: 10357725
    Abstract: A method for producing molded articles from a base substance which is mixed with a solvent to produce a molding solution, and subsequently this solvent is at least partially removed from the molding solution and the molding solution is supplied to a device (8) for molding, the molding solution is supplied to a vertical cylindrical thin-film evaporator (2) and a horizontal cylindrical thick-film dissolver (4).
    Type: Grant
    Filed: April 16, 2013
    Date of Patent: July 23, 2019
    Assignee: List Holding AG
    Inventors: Andreas Diener, Andreas Grundei, Oliver Tretzack
  • Process for producing a product
    Patent number: 9555558
    Abstract: A method for production of a molded article from a base substance in a device for mixing of the base substance with a solvent is provided. The method includes mixing a base substance to produce a molding solution with the solvent and at least partially removing the solvent from the mixture; and feeding the molding solution to a device for further processing of a product and diluting the molding solution before further processing. In embodiments, the diluent is introduced to the device before a discharge device and/or in the discharge device.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: January 31, 2017
    Assignee: LIST HOLDING AG
    Inventors: Manuel Steiner, Andreas Diener, Oliver Tretzack, Wangqian Zhao
  • Method and device for the production of molded bodies
    Patent number: 9206528
    Abstract: A method for the production of molded bodies from a base substance, wherein the base substance is mixed with a solution for producing a molding solution, and the solution subsequently is at least partially removed from the mixture, and the molding solution is fed to a unit for molding, wherein the molding solution is diluted before molding.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: December 8, 2015
    Assignee: LIST HOLDING AG
    Inventors: Andreas Diener, Oliver Tretzack, Helmut Schildknecht, Daniel Witte
  • METHOD FOR PRODUCING MOULDED ARTICLES
    Publication number: 20150114256
    Abstract: A method for producing moulded articles from a base substance which is mixed with a solvent to produce a moulding solution, and subsequently this solvent is at least partially removed from the moulding solution and the moulding solution is supplied to a device (8) for moulding, the moulding solution is supplied to a vertical cylindrical thin-film evaporator (2) and a horizontal cylindrical thick-film dissolver (4).
    Type: Application
    Filed: April 16, 2013
    Publication date: April 30, 2015
    Inventors: Andreas Diener, Andreas Grundei, Oliver Tretzack
  • PROCESS FOR PRODUCING A PRODUCT
    Publication number: 20130093112
    Abstract: A method for production of a molded article from a base substance in a device for mixing of the base substance with a solvent is provided. The method includes mixing a base substance to produce a molding solution with the solvent and at least partially removing the solvent from the mixture; and feeding the molding solution to a device for further processing of a product and diluting the molding solution before further processing. In embodiments, the diluent is introduced to the device before a discharge device and/or in the discharge device.
    Type: Application
    Filed: April 8, 2011
    Publication date: April 18, 2013
    Applicant: LIST HOLDING AG
    Inventors: Manuel Steiner, Andreas Diener, Oliver Tretzack, Wangqian Zhao
  • METHOD AND DEVICE FOR THE PRODUCTION OF MOLDED BODIES
    Publication number: 20110024931
    Abstract: A method for the production of molded bodies from a base substance, wherein the base substance is mixed with a solution for producing a molding solution, and the solution subsequently is at least partially removed from the mixture, and the molding solution is fed to a unit for molding, wherein the molding solution is diluted before molding.
    Type: Application
    Filed: February 6, 2009
    Publication date: February 3, 2011
    Applicant: LIST HOLDING AG
    Inventors: Andreas Diener, Oliver Tretzack, Helmut Schildknecht, Daniel Witte