Patents by Inventor Eckhart Bartnik

Eckhart Bartnik 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).

  • Methods for preparing carbohydrate-containing hydrophilic polymers
    Patent number: 6037467
    Abstract: Carbohydrate-containing polymers which can have an HLB* of from about 10 to about 20 are disclosed. The compounds comprise a hydrophilic polymer portion, a carbohydrate portion comprising from 1 to about 20 naturally occurring, identical or different, monosaccharide units, at least one bifunctional spacer coupling the carbohydrate portion to the hydrophilic polymer portion, and a potentiator moiety. The potentiator moiety can be is a crosslinking moiety located within the hydrophilic polymer or a hydrophobic, hydrophilic or ionic moiety. Processes for the preparation and use of such polymers are also disclosed.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: March 14, 2000
    Assignee: Glycorex AB
    Inventors: Wilhelm Stahl, Michael Ahlers, Axel Walch, Eckhart Bartnik, Gerhard Kretzschmar, Susanne Grabley, Rudolf Schleyerbach
  • Carbohydrate-containing polymers, their preparation and use
    Patent number: 5470843
    Abstract: Carbohydrate-containing polymers which can have an HLB* of from about 10 to about 20 are disclosed. The compounds comprise a hydrophilic polymer portion, a carbohydrate portion comprising from 1 to about 20 naturally occurring, identical or different, monosaccharide units, at least one bifunctional spacer coupling the carbohydrate portion to the hydrophilic polymer portion, and a potentiator moiety. The potentiator moiety can be is a crosslinking moiety located within the hydrophilic polymer or a hydrophobic, hydrophilic or ionic moiety. Processes for the preparation and use of such polymers are also disclosed.
    Type: Grant
    Filed: December 13, 1993
    Date of Patent: November 28, 1995
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Wilhelm Stahl, Michael Ahlers, Axel Walch, Eckhart Bartnik, Gerhard Kretzschmar, Susanne Grabley, Rudolf Schleyerbach