Patents by Inventor Hans-Georg Adams

Hans-Georg Adams 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).

  • Process for preparing dimethyl propanephosphonate
    Patent number: 7119220
    Abstract: Process for preparing dimethyl propanephosphonate, characterized in that dimethyl phosphite is reacted with propene in the presence of a free-radical former at a reaction temperature of 60 to 95° C., the half life of the free-radical former being 0.1 to 20 min at the reaction temperature.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: October 10, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jan-Gerd Hansel, Gert Jabs, Johannes Kaulen, Hans-Georg Adams, Hans-Günter Fröhlen
  • Extraction of ketazine solutions
    Patent number: 6818794
    Abstract: Process for extracting aqueous ketazine solutions which is carried out using an aqueous ketazine solution having a salt content of 5 to 27% by weight and an ammonia content of 0 to 28% by weight to extract at temperatures of 50 to 120° C., which is characterized in that the ketazine solution to be extracted has a molar excess of 50 to 200% of ketone based on the ketazine to be extracted, and that an aliphatic hydrocarbon extractant is used which has a boiling point of 150 to 300° C. at atmospheric pressure.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: November 16, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ottfried Schlak, Hans-Georg Adams, Johannes Kaulen
  • Process for preparing dimethyl propanephoshonate
    Publication number: 20030162988
    Abstract: Process for preparing dimethyl propanephosphonate, characterized in that dimethyl phosphite is reacted with propene in the presence of a free-radical former at a reaction temperature of 60 to 95° C., the half life of the free-radical former being 0.1 to 20 min at the reaction temperature.
    Type: Application
    Filed: February 21, 2003
    Publication date: August 28, 2003
    Inventors: Jan-Gerd Hansel, Gert Jabs, Johannes Kaulen, Hans-Georg Adams, Hans-Gunter Frohlen
  • Extraction of ketazine solutions
    Publication number: 20030105355
    Abstract: Process for extracting aqueous ketazine solutions which is carried out using an aqueous ketazine solution having a salt content of 5 to 27% by weight and an ammonia content of 0 to 28% by weight to extract at temperatures of 50 to 120° C., which is characterized in that the ketazine solution to be extracted has a molar excess of 50 to 200% of ketone based on the ketazine to be extracted, and that an aliphatic hydrocarbon extractant is used which has a boiling point of 150 to 300° C. at atmospheric pressure.
    Type: Application
    Filed: November 27, 2002
    Publication date: June 5, 2003
    Inventors: Ottfried Schlak, Hans-Georg Adams, Johannes Kaulen