Patents by Inventor Margareta Boss

Margareta Boss 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).

  • 2-cyano-4,6-dinitrophenyl mono-azo dyes for polyester and cellulose acetate
    Patent number: 4802889
    Abstract: Monoazo dyestuff of the formula ##STR1## wherein R.sup.1 is 4 alkyl having 1 to 3 carbon atoms, andR.sup.2 is methyl, ethyl or alkoxy having 1 to 4 carbon atoms hich is unsubstituted or substituted by methoxy or ethoxy is useful for dyeing and printing hydrophobic fibers a blue color.
    Type: Grant
    Filed: August 24, 1987
    Date of Patent: February 7, 1989
    Assignee: Cassella Aktiengesellschaft
    Inventors: Ulrich Bte,uml/u/ hler, Horst Tappe, Reinhard Kuhn, Albert Bode, Margareta Boss