Patents by Inventor by Gabriele Bien, legal representative

by Gabriele Bien, legal representative 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).

  • Antraquinone dyestuffs
    Patent number: 4105662
    Abstract: Reactive dyestuffs of the formula ##STR1## WHEREIN R.sub.1, R.sub.2, R.sub.3, X, Y and Z have the meaning given in the description and their use for the dyeing and printing of materials which contain hydroxyl groups and materials which contain N, such as cotton, wool and the like, by the customary processes.
    Type: Grant
    Filed: March 9, 1977
    Date of Patent: August 8, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus von Oertzen, Hans Samuel Bien, deceased, by Gabriele Bien, legal representative