Patents by Inventor Werner Sameli

Werner Sameli 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).

  • Method for the production of hydrolysis stabilized polyester monofilaments and use thereof
    Patent number: 6528161
    Abstract: The invention relates to a method for the production of hydrolysis stabilized polyester monofilamennts having a diameter of 0.12-0.80 mm viscosity index (VI) of at least 90 ml/g, wherein a liquid additive mixture consisting of ethylene carbonate and an alkylphosphonium salt as a catalyst is continuously added in a metered manner immediately in front of the extruder. The monofilament produced according to the inventive method is characterized by a residual tear strength of more than 55% after a 6-day period of treatment in water at a temperature of 125° C. and by a viscosity index of at least 75 ml/g.
    Type: Grant
    Filed: March 19, 2002
    Date of Patent: March 4, 2003
    Assignee: Rhodia Industrial Yarns AG
    Inventor: Werner Sameli