Patents by Inventor Andrew George Wilkes

Andrew George Wilkes 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: 6333108
    Abstract: Viscose filaments, preferably in staple fibre form, which have a decitex of less than 5.0 and a multi-limbed cross-section, the limbs having a length-to-width aspect ratio of at least 2:1. Examples of multi-limbed cross-sectional shapes are Y-, X-, H- and T-shapes. The fibre can be formed into woven, non-woven or knitted fabrics, and is especially useful for absorbent products.
    Type: Grant
    Filed: May 9, 1995
    Date of Patent: December 25, 2001
    Assignee: Acordis Kelheim GmbH
    Inventors: Andrew George Wilkes, Alan John Bartholomew
  • Patent number: 5686034
    Abstract: A method for the production of a tampon formed of a blend of regenerated solid cellulosic viscose fibres, is provided in which the blend includes a first set of fibres having a first cross-sectional characteristic and a second set of fibres having a second cross-sectional characteristic. The first cross-sectional characteristic is different from the second cross-sectional characteristic. The method includes the improvement of forming the blend by forming a tow of viscose rayon fibres having the same blend ratio of first and second sets of fibres as is required in the tampon by spinning viscose dope through a jet to form a plurality of filaments. The jet has a plurality of dimensionally controlled holes pierced therein. In this way a plurality of different fibre cross-sectional shapes or sizes are simultaneously formed directly in the tow by spinning the viscose dope through the jet having the required plurality of different shaped or sized holes pierced therein.
    Type: Grant
    Filed: December 4, 1995
    Date of Patent: November 11, 1997
    Assignee: Courtaulds Fibres (Holdings) Limited
    Inventors: Stephen Andrew Frankham, Angela Lindsay, Andrew George Wilkes