Patents by Inventor Michel Siaut

Michel Siaut 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).

  • Tool steel composition
    Patent number: 6280685
    Abstract: The invention relates to a tool steel composition comprising, expressed in weight percentage: C 0.3%-0.4% Cr 2.0%-4.0% Mo 0.8%-3.0% V 0.4%-1.0% W 1.5%-3.0% Co 1.0%-5.0% Si 0 %-1.0% Mn 0 %-1.0% Ni 0 %-1.0% the balance being mainly constituted by iron and inevitable impurities, and also to a method of preparing the composition.
    Type: Grant
    Filed: February 8, 2000
    Date of Patent: August 28, 2001
    Assignee: Aubert & Duval
    Inventors: André Grellier, Michel Siaut