Patents by Inventor Guan-Yu Xu

Guan-Yu Xu 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).

  • Polyvinylamine derivatives having hydrophilic centers, processes for their preparation and the use of the compounds as a medicament, active compound carrier and foodstuff auxiliary
    Patent number: 5430110
    Abstract: Polyvinylamine derivatives having hydrophilic centers, processes for their preparation and the use of the compounds as a medicament, active compound carrier and foodstuff auxiliary.Polyvinylamine derivatives containing hydrophilic centers, of the formula I ##STR1## in which R.sup.1, R.sup.2, R.sup.3, X, w, x, y and z have the meanings given, and a process for their preparation, and the use of these compounds as medicaments, active compound carriers and foodstuff auxiliaries are described. Highly pure polyvinylamines having the recurring unit of the formula Ia ##STR2## the preparation of which is likewise described, are used in particular as starting substances for the preparation.
    Type: Grant
    Filed: July 21, 1993
    Date of Patent: July 4, 1995
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Michael Ahlers, Heiner Glombik, Susanne Grabley, Ernold Granzer, Stefan Mullner, Axel Walch, Guan-Yu Xu