Patents by Inventor Michael PRÖPSTER

Michael PRÖPSTER 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 TO INCREASE THE STRENGTH OF A FORM BODY OF LITHIUM SILICATE GLASS CERAMIC
    Publication number: 20200339470
    Abstract: The invention relates to a medical form body of lithium silicate glass ceramic. To increase its strength it is proposed that a surface compressive stress is created in a form body of lithium silicate glass, or containing lithium silicate glass, through the replacement of lithium ions by alkali metal ions of greater diameter. For this purpose the form body is covered with a paste that contains alkali metal.
    Type: Application
    Filed: July 13, 2020
    Publication date: October 29, 2020
    Applicant: DENTSPLY SIRONA Inc.
    Inventors: Michael PRÖPSTER, Markus VOLLMANN
  • Method to increase the strength of a form body of lithium silicate glass ceramic
    Patent number: 10745319
    Abstract: The invention relates to a method to produce a medical form body of lithium silicate glass ceramic. To increase its strength it is proposed that a surface compressive stress is created in a form body of lithium silicate glass, or containing lithium silicate glass, through the replacement of lithium ions by alkali metal ions of greater diameter. For this purpose the form body is covered with a paste that contains alkali metal.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: August 18, 2020
    Assignee: DENTSPLY SIRONA Inc.
    Inventors: Michael Pröpster, Markus Vollmann
  • METHOD TO INCREASE THE STRENGTH OF A FORM BODY OF LITHIUM SILICATE GLASS CERAMIC
    Publication number: 20160340239
    Abstract: The invention relates to a method to produce a medical form body of lithium silicate glass ceramic. To increase its strength it is proposed that a surface compressive stress is created in a form body of lithium silicate glass, or containing lithium silicate glass, through the replacement of lithium ions by alkali metal ions of greater diameter. For this purpose the form body is covered with a paste that contains alkali metal.
    Type: Application
    Filed: May 20, 2016
    Publication date: November 24, 2016
    Applicant: DENTSPLY SIRONA Inc.
    Inventors: Michael PRÖPSTER, Markus VOLLMANN