Patents by Inventor Ludwina Machetanz

Ludwina Machetanz 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).

  • Glycol-free aqueous anti-freeze agent containing dicarboxylic salts
    Patent number: 8202444
    Abstract: The present invention relates to an aqueous antifreeze composition comprising 10 to 50% by weight of one or more dicarboxylic acids, preferably aliphatic dicarboxylic acids having 4 to 12 carbon atoms in the form of the alkali metal, ammonium or alkaline earth metal salt. Preferably, these salts are used in combination with at least one further substance. This gives antifreeze compositions with a good frost protective action, good heat conductivity and good protection against corrosion.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: June 19, 2012
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Wenderoth, Monica Fernandez Gonzalez, Stefan Dambach, Ludwina Machetanz, Uwe Nitzschke
  • Glycol-free aqueous antifreeze compositions comprising dicarboxylic acid salts
    Patent number: 7704406
    Abstract: The present invention relates to an aqueous antifreeze composition comprising 10 to 50% by weight of one or more dicarboxylic acids, preferably aliphatic dicarboxylic acids having 4 to 12 carbon atoms in the form of the alkali metal, ammonium or alkaline earth metal salt. Preferably, these salts are used in combination with at least one further substance. This gives antifreeze compositions with a good frost protective action, good heat conductivity and good protection against corrosion.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: April 27, 2010
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Wenderoth, Monica Fernandez Gonzalez, Stefan Dambach, Ludwina Machetanz, Uwe Nitzschke
  • GLYCOL-FREE AQUEOUS ANTIFREEZE COMPOSITIONS COMPRISING DICARBOXYLIC ACID SALTS
    Publication number: 20080283795
    Abstract: The present invention relates to an aqueous antifreeze composition comprising 10 to 50% by weight of one or more dicarboxylic acids, preferably aliphatic dicarboxylic acids having 4 to 12 carbon atoms in the form of the alkali metal, ammonium or alkaline earth metal salt. Preferably, these salts are used in combination with at least one further substance. This gives antifreeze compositions with a good frost protective action, good heat conductivity and good protection against corrosion.
    Type: Application
    Filed: July 29, 2008
    Publication date: November 20, 2008
    Applicant: BASF Aktiengesellschart
    Inventors: Bernd Wenderoth, Monica Fernandez Gonzalez, Stefan Dambach, Ludwina Machetanz, Uwe Nitzschke
  • Glycol-free aqueous anti-freeze agent containing dicarboxylic salts
    Publication number: 20060163528
    Abstract: The present invention relates to an aqueous antifreeze composition comprising 10 to 50% by weight of one or more dicarboxylic acids, preferably aliphatic dicarboxylic acids having 4 to 12 carbon atoms in the form of the alkali metal, ammonium or alkaline earth metal salt. Preferably, these salts are used in combination with at least one further substance. This gives antifreeze compositions with a good frost protective action, good heat conductivity and good protection against corrosion.
    Type: Application
    Filed: August 1, 2003
    Publication date: July 27, 2006
    Inventors: Bernd Wenderoth, Monica Gonzalez, Stefan Dambach, Ludwina Machetanz, Uwe Nitzschke