Patents by Inventor Rainer F. Naef

Rainer F. Naef 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).

  • Forming solutions
    Patent number: 5534113
    Abstract: A solution of cellulose is formed by moving a premix of a tertiary amine N-oxide, water and cellulose through a thin-film evaporator using a bladed rotor under treatment conditions which specify, inter alia, an area of heated surface (1 m.sup.2 to 125 m.sup.2), a blade speed (2.5 to 8 m/sec), a pressure (25 to 100 mb) and a temperature (90.degree. to 135.degree. C.).
    Type: Grant
    Filed: March 23, 1995
    Date of Patent: July 9, 1996
    Assignee: Courtaulds Fibres (Holdings) Limited & Buss AG
    Inventors: Michael C. Quigley, Rainer F. Naef