Patents by Inventor Peter F. Vogt

Peter F. Vogt 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).

  • Metal complex dyestuffs
    Patent number: 4000965
    Abstract: 1:2 METAL COMPLEX DYES IN THE FORM OF THE LITHIUM SALTS AND CONCENTRATED SOLUTIONS THEREOF ARE USED FOR THE PREPARATION OF DYE BATHS AND PRINTING PASTES FOR DYEING AND PRINTING FIBROUS MATERIALS CONTAINING NITROGEN. The concentrated solutions are obtained by chromating the non-metallized dyes in hydroxyl group containing solvents in the presence of alkaline lithium salts with chromium acetate or chromium formate.
    Type: Grant
    Filed: January 29, 1975
    Date of Patent: January 4, 1977
    Assignee: Bayer Aktiengesellschaft
    Inventors: Winfried Mennicke, Peter Suchanek, Peter F. Vogt