Patents by Inventor Erik Thaels

Erik Thaels 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).

  • Melt-spun high-strength polyethylene fibre
    Patent number: 5474845
    Abstract: The invention concerns a high strength polyethylene fibre, which is prepared by melt spinning polyethylene having a high density through a spinnerette, by cooling the fibre coming out from the spinnerette and by stretching the fibre obtained at 50.degree.-150.degree. C. The polyethylene used in the melt spinning is a homopolymer of ethylene having a weight average molecular weight M.sub.w between 125000-175000 g/mol, a number average molecular weight M.sub.n between 26000-33000 g/mol, polydispersity (M.sub.w /M.sub.n) below 5 and the density higher than 955 g/dm.sup.3. The stretching degree in the drawing step is at least 400%.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: December 12, 1995
    Assignee: Borealis A/S
    Inventors: Olli T. Turunen, Jan Fors, Erik Thaels