Patents by Inventor Ralf Miessen

Ralf Miessen 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).

  • Finishes for stable fibers of synthetic polymers
    Patent number: 4900455
    Abstract: The invention relates to new finishing mixtures, which contain fatty acid alkanolamides having softening points above 70.degree. C. as anti-blocking components, for synthetic fibers, particularly fibers of polyacrylonitrile, which are used as staple fibers. The invention also relates to the use of these finishing mixtures for the finishing of staple fibers, particularly polyacrylonitrile-based staple fibers.
    Type: Grant
    Filed: September 12, 1988
    Date of Patent: February 13, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Joachim Kolbe, Ferdinand Kummeler, Rudolf J. Klee, Ralf Miessen
  • Dressing agent for synthetic fibers
    Patent number: 4863478
    Abstract: Improved dressings for synthetic fibers, especially acrylonitrile fibers, comprise an anion-active preparation, a polyethylene dispersion and a dicarboxylic acid semi-ester salt.
    Type: Grant
    Filed: May 4, 1988
    Date of Patent: September 5, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Joachim Kolbe, Ferdinand Kummeler, Ralf Miessen, Rudolf-Jurgen Klee
  • Method for the multi-stage fibre cables and the apparatus required for it
    Patent number: 4701980
    Abstract: An improved method for the after-treatment of washed and dried fibre cable having a minimum mass of 250 ktex by crimping, fixing, cooling and optionally cutting or tearing is achieved in that the band width of the cable issuing from the drier with a covering density of at most 5 ktex/cm is reduced by at least 50% of the original band width with a corresponding increase in the packing density, is crimped in a stuffer box crimping means at a stuffer box pressure of from 4 to 10 N/cm and a stuffer box temperature of from 80.degree. to 95.degree. C., the crimping is fixed in or immediately after the stuffer box, the cable is deposited on the surface of an air-permeable conveyor belt, air is blown or sucked there through fibre package or conveyor belt and the cable is then optionally supplied to a tearing converter or a cutting machine.
    Type: Grant
    Filed: April 3, 1986
    Date of Patent: October 27, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolfgang Backer, Wolfram Wagner, Gunther Hahn, Ralf Miessen
  • Process for the production of highly shrinkable split tows of acrylonitrile polymers
    Patent number: 4434530
    Abstract: High-shrinkage stretch-broken tows of acrylonitrile polymers are obtained by fixing with saturated steam at maximum temperatures of 140.degree. C. after drawing and before stretch breaking and stretch breaking at a draft of at least 30%.
    Type: Grant
    Filed: March 5, 1981
    Date of Patent: March 6, 1984
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ralf Miessen, Hans Wilsing, Fritz Schultze-Gebhardt
  • Process for dyeing wet-spun aromatic polyamides in gel form
    Patent number: 4108936
    Abstract: The invention relates to a process for the production of dyed filaments from aromatic polyamides which are not modified with acid or basic groups.
    Type: Grant
    Filed: August 7, 1975
    Date of Patent: August 22, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gerhard Dieter Wolf, Ralf Miessen, Hans Egon Kunzel, Francis Bentz
  • Process for dyeing dry-spun aromatic polyamides
    Patent number: 4078889
    Abstract: The invention relates to a process for the production of dyed filaments from aromatic polyamides which are modified with acid groups.
    Type: Grant
    Filed: August 7, 1975
    Date of Patent: March 14, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gerhard Dieter Wolf, Ralf Miessen, Hans Egon Kunzel, Francis Bentz
  • Dyeing dry-spun aromatic polyamides
    Patent number: 4066396
    Abstract: The invention relates to a process for the production of dyed filaments of aromatic polyamides which have not been modified with acid or basic group.
    Type: Grant
    Filed: August 7, 1975
    Date of Patent: January 3, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gerhard Dieter Wolf, Ralf Miessen, Hans Egon Kunzel, Francis Bentz
  • Process for dyeing wet-spun aromatic polyamides in gel form
    Patent number: 4059403
    Abstract: The invention relates to a process for the production of dyed filaments from aromatic polyamides which contain acid groups.
    Type: Grant
    Filed: August 7, 1975
    Date of Patent: November 22, 1977
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gerhard Dieter Wolf, Ralf Miessen, Hans Egon Kunzel, Francis Bentz
  • 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