Patents by Inventor Philip Trevor Slack

Philip Trevor Slack 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 and apparatus for producing crimped thermoplastics
    Patent number: 6123886
    Abstract: A method for producing a substantial helical crimp in a continuous filament of thermoplastic material by generating a turbulence in the thermoplastic material while the material is in its glass transition phase and maintaining stresses induced in the formed filament by said turbulence while the material passes into its crystallized phase.
    Type: Grant
    Filed: August 31, 1998
    Date of Patent: September 26, 2000
    Assignee: SCS Consultancy Services
    Inventor: Philip Trevor Slack