Patents by Inventor Gunter Blankenstein

Gunter Blankenstein 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).

  • Wet spun modacrylic filaments with improved coloristic properties
    Patent number: 4017561
    Abstract: The invention relates to wet-spun modacrylic filaments with improved coloristic properties based on a polymer mixture, which comprises at least one acrylonitrilevinyl chloride copolymer and a chlorine-containing copolymer containing sulphonic acid ester groups or sulphuric acid ester groups.
    Type: Grant
    Filed: November 11, 1975
    Date of Patent: April 12, 1977
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ralf Miessen, Gunter Blankenstein, Siegfried Korte, Carlhans Suling
  • Dry-spun modacrylic filaments with improved coloristic properties
    Patent number: 4014958
    Abstract: The invention relates to dry-spun modacrylic filaments with improved coloristic properties based on a polymer mixture, which comprises at least one acrylonitrile-vinyl chloride copolymer and a chlorine-containing copolymer containing sulphonic acid ester groups or sulphuric acid ester groups.
    Type: Grant
    Filed: November 11, 1975
    Date of Patent: March 29, 1977
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ralf Miessen, Gunter Blankenstein, Siegfried Korte, Carlhans Suling
  • Process for continuously dyeing filaments of slivers of wet-spun acrylonitrile polymers
    Patent number: 4013406
    Abstract: The invention relates to a process for the continuous uniform and penetrative dyeing with high fastnesses of slivers or filaments of acrylonitrile polymers which have been produced by a standard wet-spinning process wherein the slivers or filaments prior to dyeing are subjected to a combined washing, pressing and drying pretreatment.
    Type: Grant
    Filed: January 14, 1975
    Date of Patent: March 22, 1977
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Reinehr, Hans Lenz, Alfred Nogaj, Gunter Blankenstein