Patents by Inventor Rainer Nusser

Rainer Nusser 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).

  • Fibre-reactive disazo dyestuffs
    Patent number: 5554732
    Abstract: Fibre-reactive disazo compounds of the formula ##STR1## which compounds are in free acid or salt form, and mixtures thereof, are useful for dyeing or printing hydroxy group- or nitrogen-containing organic substrates, for example leather and fibre material comprising natural or synthetic polyamides or natural or regenerated cellulose; the most preferred substrate is a textile material comprising cotton.
    Type: Grant
    Filed: May 2, 1995
    Date of Patent: September 10, 1996
    Assignee: Sandoz Ltd
    Inventors: Rainer Nusser, Roland Wald