Patents by Inventor Ludwig Eberle

Ludwig Eberle 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).

  • System of converting environmentally pollutant waste gases to a useful product
    Patent number: 5571483
    Abstract: A continuous flow method and system is provided for converting environmentally pollutant by-product waste gases emitted during the manufacture of a product in a first manufacturing plant to a useful product in a second manufacturing plant such that release of the gases into the atmosphere may be prevented.
    Type: Grant
    Filed: January 26, 1990
    Date of Patent: November 5, 1996
    Assignees: Exolon-ESK Company, Electroschmelzwerk Kempten GmbH
    Inventors: Hans Pfingstl, Walter Martyniuk, Armand Ladage, Tom McNally, Robert Myers, Ludwig Eberle
  • Method of converting environmentally pollutant waste gases to methanol
    Patent number: 5232951
    Abstract: A continuous flow method and system is provided for converting environmentally pollutant by-product waste gases emitted during the manufacture of silicon carbide in a first manufacturing plant to methanol in a second manufacturing plant such that release of the gases into the atmosphere may be prevented.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: August 3, 1993
    Assignees: Exolon-ESK Company, Elektroschmelzwerk Kempten GmbH
    Inventors: Hans Pfingstl, Walter Martyniuk, Armand Ladage, Tom McNally, Robert Myers, Ludwig Eberle
  • Thickening agent for liquid media consisting of highly dispersed silicon dioxide and process for making the same
    Patent number: 4147760
    Abstract: A process for the manufacture of highly dispersed silicon dioxide with improved thickening action by treatment of pyrogenically produced silicic acid comprising the following steps:A. preparing silicic acid by flame hydrolysis from silicon halides;B. separating the silicic acid from generated gases;C. reating the acid with 2 to 10 percent by weight of silicon tetrachloride calculated on silicic acid, while optionally/mechanically stirring;D. hydrolyzing the product by means of an air/water vapor mixture, and finally deacifying to obtain the silicon dioxide of improved thickening action.The invention also relates to the thickening agent, which is useful for a variety of purposes, among others as additive for preparations of dental hygiene.
    Type: Grant
    Filed: February 22, 1977
    Date of Patent: April 3, 1979
    Assignee: Wacker-Chemie GmbH
    Inventors: Gunter Kratel, Gunter Stohr, Ludwig Eberle, Ernst Muhlhofer