Patents by Inventor Peter Ronald Brewin

Peter Ronald Brewin 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).

  • Stainless steel powders and articles produced therefrom by powder metallurgy
    Patent number: 5856625
    Abstract: Articles produced by a powder metallurgy process involving forming of a shape by compaction followed by sintering without the application of external pressure from a stainless steel alloy powder produced by rapid atomization followed by an annealing treatment, which powder consists essentially of in weight percent, chromium 14-30, molybdenum 1 to 5, vanadium 0 to 5, tungsten 0 to 6, silicon 0 to 1.
    Type: Grant
    Filed: December 4, 1997
    Date of Patent: January 5, 1999
    Assignee: Powdrex Limited
    Inventors: John Saunders, Paul Dudfield Nurthen, Nigel Craig Trilk, Peter Ronald Brewin, John Vivian Wood