Patents by Inventor Klaus Basfeld

Klaus Basfeld 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).

  • Patent number: 5820934
    Abstract: The present invention relates to a method for the production of a fiber-reinforced cellulose tube by continuous coating of a fibrous non-woven fabric with an alkaline viscose solution which is neutralized by means of an acid-containing precipitating liquid and is converted into regenerated cellulose, wherein on the path between viscose coating and immersion in the precipitating bath, aqueous, acid-containing precipitating agents are caused to act upon the fresh viscose tube within the tube for the purpose of stiffening and regeneration to form regenerated cellulose, the process being begun with the application of the precipitating liquid directly after conclusion of the embedding of fiber in viscose and the precipitating liquid being guided together with the tube with the aid of optionally fixed internal devices which are designed in such a way that they support the tube that has had precipitating bath applied to it and in the process maintain it in rounded shape, that the length of the inner preliminary prec
    Type: Grant
    Filed: May 9, 1997
    Date of Patent: October 13, 1998
    Assignee: Wolff Walsrode AG
    Inventor: Klaus Basfeld
  • Patent number: 4808439
    Abstract: Fleece materials are coated, in particular on both sides, with a viscous liquid by applying the viscous liquid to at least one side of a web from at least two dies.
    Type: Grant
    Filed: October 27, 1987
    Date of Patent: February 28, 1989
    Assignee: Wolff Walsrode Aktiengesellschaft
    Inventor: Klaus Basfeld