Patents by Inventor Werner Marschner

Werner Marschner 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).

  • Concentrated reactive dyestuff solutions containing cyanamide compound as stabilizer
    Patent number: 4685933
    Abstract: Concentrated aqueous solutions of dyestuffs having water-solubilizing groups which contain cyanamides of the formula ##STR1## wherein R.sub.1 =NHCN, NHCONH.sub.2 or NHCONHCH.sub.3 where n=0 andm=1 or n=1 and m=0,have a long shelf life, in particular also in the case of reactive dyestuffs.
    Type: Grant
    Filed: June 24, 1985
    Date of Patent: August 11, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Joachim Wolff, Karlheinz Wolf, Werner Marschner
  • Dyeing process
    Patent number: 4278436
    Abstract: Process for dyeing and printing cellulose fibre materials with reactive dyestuffs having a halogen leaving group or sulphonyl leaving group on a heterocyclic radical, characterized in that the process is carried out in the presence of a cyanamide or an unsaturated amide in a weakly acid to neutral medium.
    Type: Grant
    Filed: March 6, 1979
    Date of Patent: July 14, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Werner Marschner, Heinz Minwegen