Patents by Inventor Len E. Mann

Len E. Mann 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).

  • Brittle wire extrusion method and apparatus
    Patent number: 6904657
    Abstract: A method and apparatus is presented for the manufacture of brittle wire by the co-extrusion, or filled billet method. The invention involves a step by step method by which a billet can is specially prepared with a chamfered front end and a concave, collapsible front plate and a uniquely vented rear end. The result is a superior process in which bursting of the can and front end is eliminated, thereby resulting in a superior product, increased yield, improved safety and the like.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: June 14, 2005
    Assignee: Polymet Corporation
    Inventor: Len E. Mann