Patents by Inventor Gottlieb-Georg Lindner

Gottlieb-Georg Lindner 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).

  • Hydrophilic silica as filler for silicone rubber formulations
    Patent number: 9725326
    Abstract: Provided is a hydrophilic precipitated silica which is well suited to use in silicone rubber formulations (RTV-1, RTV-2, HTV and LSR), particularly well suited to use in HTV silicone rubber formulations. It has a BET surface area of 185˜260 m2/g, a CTAB surface area of 100˜160 m2/g, a BET/CTAB ratio of 1.2˜2.6, and a conductivity of <250 ?S/cm. Also provided are a process for producing the precipitated silica and the use of the precipitated silica for thickening and reinforcing silicone rubber formulations.
    Type: Grant
    Filed: July 3, 2009
    Date of Patent: August 8, 2017
    Assignee: Evonik Degussa GmbH
    Inventors: Gottlieb-Georg Lindner, Michael Kempf
  • Low-pressure milling process
    Patent number: 8864056
    Abstract: The present invention provides a process for generating fine particles in a jet mill which operates at a pressure of a milling gas of less than or equal to 4 bar in abs value and a temperature of the mill of less than 100° C., a process for simultaneous milling and surface modifications of the fine particles, a jet mill for operating the process and products obtained by the process.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: October 21, 2014
    Assignee: Evonik Degussa GmbH
    Inventors: Florian Paulat, Gottlieb-Georg Lindner, Karl Meier
  • HYDROPHILIC SILICA AS FILLER FOR SILICONE RUBBER FORMULATIONS
    Publication number: 20120029136
    Abstract: Provided is a hydrophilic precipitated silica which is well suited to use in silicone rubber formulations (RTV-1, RTV-2, HTV and LSR), particularly well suited to use in HTV silicone rubber formulations. It has a BET surface area of 185˜260 m2/g, a CTAB surface area of 100˜160 m2/g, a BET/CTAB ratio of 1.2˜2.6, and a conductivity of <250 ?S/cm. Also provided are a process for producing the precipitated silica and the use of the precipitated silica for thickening and reinforcing silicone rubber formulations.
    Type: Application
    Filed: July 3, 2009
    Publication date: February 2, 2012
    Applicant: Evonik Degussa GmbH
    Inventors: Gottlieb-Georg Lindner, Michael Kempf
  • LOW-PRESSURE MILLING PROCESS
    Publication number: 20110073689
    Abstract: The present invention provides a process for generating fine particles in a jet mill which operates at a pressure of a milling gas of less than or equal to 4 bar in abs value and a temperature of the mill of less than 100° C., a process for simultaneous milling and surface modifications of the fine particles, a jet mill for operating the process and products obtained by the process.
    Type: Application
    Filed: September 28, 2010
    Publication date: March 31, 2011
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Florian PAULAT, Gottlieb-Georg Lindner, Karl Meier
  • Silica by precipitation at constant alkali number, and its use
    Patent number: 7871588
    Abstract: Precipitated silica or silicates, obtainable by acid precipitation of aqueous silicate solutions while maintaining a constant alkali number of at least 1.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: January 18, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Gottlieb-Georg Lindner, Robert Kuhlmann, Claus-Peter Drexel
  • Silica and silicate by precipitation at constant alkali number, and its use
    Patent number: 7097818
    Abstract: Precipitated silica or silicates, obtainable by acid precipitation of aqueous silicate solutions while maintaining a constant alkali number of at least 1.
    Type: Grant
    Filed: January 31, 2005
    Date of Patent: August 29, 2006
    Assignee: Degussa AG
    Inventors: Gottlieb-Georg Lindner, Robert Kuhlmann, Claus-Peter Drexel
  • Doped precipitated silica
    Patent number: 7070749
    Abstract: Foreign-atom-doped precipitated silicas having a BET surface area of more than 300 m2/g and a maximum surface concentration of the foreign atoms of 0.05 mmol/m2, to a process for preparing them and to the use of the resulting precipitated silicas in papermaking.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: July 4, 2006
    Assignee: Degussa AG
    Inventors: Gottlieb-Georg Lindner, Astrid Mueller
  • Silica and silicate by precipitation at constant alkali number, and its use
    Publication number: 20050137317
    Abstract: Precipitated silica or silicates, obtainable by acid precipitation of aqueous silicate solutions while maintaining a constant alkali number of at least 1.
    Type: Application
    Filed: January 31, 2005
    Publication date: June 23, 2005
    Applicant: Degussa AG
    Inventors: Gottlieb-Georg Lindner, Robert Kuhlmann, Claus-Peter Drexel
  • Silica and silicate by precipitation at constant alkali number, and its use
    Publication number: 20030003040
    Abstract: Precipitated silica or silicates, obtainable by acid precipitation of aqueous silicate solutions while maintaining a constant alkali number of at least 1.
    Type: Application
    Filed: February 22, 2002
    Publication date: January 2, 2003
    Applicant: DE GUSSA AG
    Inventors: Gottlieb-Georg Lindner, Robert Kuhlmann, Claus-Peter Drexel
  • Doped precipitated silica
    Publication number: 20020112647
    Abstract: Foreign-atom-doped precipitated silicas having a BET surface area of more than 300 m2/g and a maximum surface concentration of the foreign atoms of 0.05 mmol/m2, to a process for preparing them and to the use of the resulting precipitated silicas in papermaking.
    Type: Application
    Filed: December 14, 2001
    Publication date: August 22, 2002
    Applicant: Degussa AG
    Inventors: Gottlieb-Georg Lindner, Astrid Mueller