Patents by Inventor Holger Drews

Holger Drews 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).

  • Chlorine-resistant elastan fibers
    Publication number: 20050038138
    Abstract: Chlorine-resistant elastic polyurethane urea fibers containing hydrotalcites coated with metal fatty acid salts which are useful in aqueous, chlorine-containing environments, such as for swimming pool liners, and process for their production.
    Type: Application
    Filed: January 20, 2004
    Publication date: February 17, 2005
    Applicant: Bayer Faser GmbH
    Inventors: Stephan Hutte, Hans-Josef Behrens, Hans-Peter Baldus, Holger Drews
  • Method and device for continuous loss free bobbin change
    Patent number: 5810270
    Abstract: Method and device for winding continuous threads or yarns to produce yarn bobbins having thread reserves, wherein the bobbins are automatically changed, without the need for a catch slot, to achieve automatic, loss-free and highly reliable changing of full bobbins with empty bobbins, and the full bobbins include a thread reserve lap which is easily accessible on the bobbin edge and having a thread which runs from the thread reserve into the bobbin.
    Type: Grant
    Filed: February 4, 1997
    Date of Patent: September 22, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolfgang Backer, Holger Drews, Josef Jelinski