Patents by Inventor Ortrud Perathoner

Ortrud Perathoner 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 of dividing glass into separate pieces with the aid of a cutting liquid and improved cutting liquid for said method
    Patent number: 8024943
    Abstract: The method of dividing a glass substrate into separate pieces includes producing a crack along a dividing line on the substrate and acting on the crack with an aqueous cutting liquid during or immediately after producing the crack. The aqueous cutting liquid used in the method has a special composition that reduces the breaking forces applied to the glass substrate in order to divide it. The aqueous liquid contains an ionic organic compound, which has a cation with a positively charged nitrogen atom and a hydroxyl anion. Quaternary ammonium hydroxide compounds are especially preferred as the ionic organic compound.
    Type: Grant
    Filed: May 15, 2006
    Date of Patent: September 27, 2011
    Assignee: Schott AG
    Inventors: Bernd Hoetzel, Andreas Habeck, Ortrud Perathoner
  • Method of dividing glass into separate pieces with the aid of a cutting liquid and improved cutting liquid for said method
    Publication number: 20060266195
    Abstract: The method of dividing a glass substrate into separate pieces includes producing a crack along a dividing line on the substrate and acting on the crack with an aqueous cutting liquid during or immediately after producing the crack. The aqueous cutting liquid used in the method has a special composition that reduces the breaking forces applied to the glass substrate in order to divide it. The aqueous liquid contains an ionic organic compound, which has a cation with a positively charged nitrogen atom and a hydroxyl anion. Quaternary ammonium hydroxide compounds are especially preferred as the ionic organic compound.
    Type: Application
    Filed: May 15, 2006
    Publication date: November 30, 2006
    Inventors: Bernd Hoetzel, Andreas Habeck, Ortrud Perathoner