Patents by Inventor Anja Lukas

Anja Lukas 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).

  • Hydrophobic precipitated silica for defoamer formulations
    Patent number: 8614256
    Abstract: A hydrophobic precipitated silica having a BET of less than 110 m2/g, a CTAB of less than 150 m2/g, a BET/CTAB ratio of less than 3, a carbon content of greater than 3.1%, a pH of 9.7 to 10.5, a DBP of less than 230 g/(100 g), and a methanol wettability of more than 50%. The hydrophobic precipitated silica is used in compositions including defoamers, silicone rubber and HTV crosslinkable silicone rubber compositions. The hydrophobic precipitated silica is also useful as a flow assistant and carrier or anti-blocking agent.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: December 24, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Christian Panz, Rene Allerdisse, Helga Obladen, Mario Loebbus, Anja Lukas, Roland Bergmann, Karl Meier
  • Hydrophilic precipitated silica for defoamer formulations
    Patent number: 8007751
    Abstract: Precipitated silicas with a high pH and their use in applications as defoamers having optimum silanol group density and a process for preparing precipitated silicas and to their use, particularly in defoamer formulations.
    Type: Grant
    Filed: January 19, 2005
    Date of Patent: August 30, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Christian Panz, Rene Allerdisse, Helga Obladen, Mario Loebbus, Anja Lukas, Roland Bergmann, Karl Meier
  • HYDROPHOBIC PRECIPITATED SILICA FOR DEFOAMER FORMULATIONS
    Publication number: 20110172343
    Abstract: Hydrophobic precipitated silicas with a high pH and low silanol group density, a process for preparing them and their use, particularly in deformer formulations.
    Type: Application
    Filed: February 1, 2011
    Publication date: July 14, 2011
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Christian PANZ, Rene Allerdisse, Helga Obladen, Mario Loebbus, Anja Lukas, Roland Bergmann, Karl Meier
  • Hydrophilic precipitated silica for defoamer formulations
    Publication number: 20050191228
    Abstract: Precipitated silicas with a high pH and their use in applications as defoamers having optimum silanol group density and a process for preparing precipitated silicas and to their use, particularly in defoamer formulations.
    Type: Application
    Filed: January 19, 2005
    Publication date: September 1, 2005
    Applicant: Degussa AG
    Inventors: Christian Panz, Rene Allerdisse, Helga Obladen, Mario Loebbus, Anja Lukas, Roland Bergmann, Karl Meier
  • Hydrophobic precipitated silica for defoamer formulations
    Publication number: 20050192395
    Abstract: Hydrophobic precipitated silicas with a high pH and low silanol group density, a process for preparing them and their use, particularly in deformer formulations.
    Type: Application
    Filed: January 19, 2005
    Publication date: September 1, 2005
    Applicant: Degussa AG
    Inventors: Christian Panz, Rene Allerdisse, Helga Obladen, Mario Loebbus, Anja Lukas, Roland Bergmann, Karl Meier