Patents by Inventor Gustaf Graff

Gustaf Graff 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).

  • Process for the manufacture of fast dyeings on synthetic hydrophobic textile material
    Patent number: 3958933
    Abstract: The invention describes a process for the discontinuous aftertreatment of synthetic hydrophobic textile material, especially polyamide or polyester textile material, which is dyed preferably from an organic liquor with disperse dyestuffs containing hydroxyl and/or amino groups, with chemical fixing agents such as isocyanates, masked isocyanates, acid halides or acid anhydrides, from chlorinated aliphatic hydrocarbons, especially perchloroethylene, at temperatures above 80.degree.C, and subsequently rinsing and drying this material on which dyeings are obtained that are fast to water, solvents, light and are also very fast to sublimation.
    Type: Grant
    Filed: May 13, 1974
    Date of Patent: June 1, 1976
    Assignee: Ciba-Geigy Corporation
    Inventors: Gustaf Graff, Hans-Jorg Angliker, Richard Peter, Branimir Milicevic, Hansruedi Hoster, Raymond Defago