Patents by Inventor Eckhard Gartner

Eckhard Gartner 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 and device for the formation of monofilaments produced by melt-spinning
    Patent number: 6036895
    Abstract: A continuous process and apparatus for the production of melt-spun monofilaments having a diameter of 60 .mu.m to 2500 .mu.m from fiber-forming polymers, wherein the polymer melt is spun into air from a spinning head, laterally quenched in a spinning cabinet with a defined air velocity profile and then cooled in a liquid bath.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: March 14, 2000
    Assignee: Bayer Faser GmbH
    Inventors: Jurgen Budenbender, Eckhard Gartner
  • Melt-spun abrasion-resistant monofilaments
    Patent number: 5869180
    Abstract: The invention relates to melt-spun monofilaments of polyamide, polyester or polypropylene as filament-forming polymers with improved abrasion resistance and their use for producing technical materials or use as wire.
    Type: Grant
    Filed: December 27, 1996
    Date of Patent: February 9, 1999
    Inventors: Jurgen Budenbender, Eckhard Gartner
  • Continuous process for melt-spinning monofilaments
    Patent number: 5785997
    Abstract: The invention relates to a continuous process for the formation of monofilaments having a diameter of from 60 .mu.m to 500 .mu.m from filament-forming polymers by melt-spinning the polymer, optionally quenching the formed polymer filaments below the melt-spinning head with a cooling medium, cooling the filaments in a liquid bath having a temperature of from -10.degree. C. to 150.degree. C., removing the entrained water and post-treating the filaments by spin finishing, drawing and fixing at a filament delivery speed which is greater than 600 to 4000 m/min after the fixing step.
    Type: Grant
    Filed: February 6, 1996
    Date of Patent: July 28, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jurgen Budenbender, Eckhard Gartner, Jakob Jansen
  • Continuous process for melt-spinning monofilaments
    Patent number: 5518670
    Abstract: The invention relates to a continuous process for the formation of monofilaments having a diameter of from 60 .mu.m to 500 .mu.m from filament-forming polymers by melt-spinning the polymer, optionally quenching the formed polymer filaments below the melt-spinning head with a cooling medium, cooling the filaments in a liquid bath having a temperature of from -10.degree. C. to 150.degree. C., removing the entrained water and post-treating the filaments by spin finishing, drawing and fixing at a filament delivery speed which is greater than 600 to 4000 m/min after the fixing step.
    Type: Grant
    Filed: October 13, 1994
    Date of Patent: May 21, 1996
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jurgen Budenbender, Eckhard Gartner, Jakob Jansen
  • Process for the production of high-strength filaments from dry-spun polyacrylonitrile
    Patent number: 4421708
    Abstract: High-strength filaments of dry-spun polyacrylonitrile are obtained by a process in which tension-reduced spun filaments are continuously stretched hydrothermally in one or more stages: where it involves several stages, stretching is carried out at a temperature of the stretching medium gradually increasing from stage to stage up to .theta.=.theta..sub.n and, in the final (n-th) stage, to a degree of at least 50% of the maximum degree of stretching; where it is carried out in a single stage, stretching is carried out at the optimal stretching temperature .theta..sub.n, after which the material is further treated in the conventional way, optionally with fixing of the stretched material to a pre-determined extent.
    Type: Grant
    Filed: February 4, 1982
    Date of Patent: December 20, 1983
    Assignee: Bayer Aktiengesellschaft
    Inventors: Manfred Reichardt, Christian Pieper, Alfred Nogaj, Surinder S. Sandhu, Eckhard Gartner