Patents by Inventor Erika Messinger

Erika Messinger 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).

  • UV-light-absorbing quaternary polysiloxanes
    Patent number: 7776989
    Abstract: The invention relates to UV-light-absorbing quaternary polysiloxanes in which quaternary groups and UV-absorbing radicals can be mixed independently of one another according to the general formula (I)
    Type: Grant
    Filed: February 1, 2006
    Date of Patent: August 17, 2010
    Assignee: Evonik Goldschmidt GmbH
    Inventors: Michael Ferenz, Burghard Gruening, Holger Leidreiter, Erika Messinger, Matthias Pascaly, Astrid Zuendorff
  • UV-light-absorbing quaternary polysiloxanes
    Publication number: 20060188456
    Abstract: The invention relates to UV-light-absorbing quaternary polysiloxanes in which quaternary groups and UV-absorbing radicals can be mixed independently of one another according to the general formula (I)
    Type: Application
    Filed: February 1, 2006
    Publication date: August 24, 2006
    Inventors: Michael Ferenz, Burghard Gruening, Holger Leidreiter, Erika Messinger, Matthias Pascaly, Astrid Zuendorff
  • Process for the preparation of copolymeric hydrophobically modified polyglutamic acid derivatives and their use
    Patent number: 6737501
    Abstract: Process for the preparation of copolymeric polypeptides, which comprises, in a first stage, reacting glutamic acid and/or derivatives thereof with amines in the absence of solvents and catalysts, under condensation conditions and, in a second stage, adding one or more further amino acids and/or derivatives thereof and/or one or more identical and/or further amines simultaneously or in any desired order, and reacting them with the reaction product of the first stage in the absence of solvents and catalysts.
    Type: Grant
    Filed: January 3, 2003
    Date of Patent: May 18, 2004
    Assignee: Goldschmidt AG
    Inventors: Thomas Dietz, Erika Messinger, Peter Muss, Ute Schick, Christian Weitemeyer, Astrid Zündorff
  • Process for the preparation of copolymeric hydrophobically modified polyglutamic acid derivatives and their use
    Publication number: 20030130479
    Abstract: Process for the preparation of copolymeric polypeptides, which comprises, in a first stage, reacting glutamic acid and/or derivatives thereof with amines in the absence of solvents and catalysts, under condensation conditions and, in a second stage, adding one or more further amino acids and/or derivatives thereof and/or one or more identical and/or further amines simultaneously or in any desired order, and reacting them with the reaction product of the first stage in the absence of solvents and catalysts.
    Type: Application
    Filed: January 3, 2003
    Publication date: July 10, 2003
    Applicant: Goldschmidt AG
    Inventors: Thomas Dietz, Erika Messinger, Peter Muss, Ute Schick, Christian Weitemeyer, Astrid Zundorff