Patents by Inventor Sylvain Pierre PUECH

Sylvain Pierre PUECH 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).

  • MARTENSITIC STAINLESS STEEL, PART MADE IN SAID STEEL AND METHOD FOR MANUFACTURING SAME
    Publication number: 20160289805
    Abstract: A martensitic stainless steel is provided, wherein its composition is: trace amounts?C?0.030%; trace amounts?Si?0.25%; trace amounts?Mn?0.25%; trace amounts?S?0.020%; trace amounts?P?0.040%; 8%?Ni?14%; 8%?Cr?14%; 1.5%?Mo+W/2?3.0%; 1.0%?Al?2.0%; 0.5%?Ti?2.0%; 2%?Co?9%; trace amounts?N?0.030%; trace amounts?O?0.020%; the remainder being iron and impurities resulting from the steelmaking; and its martensitic transformation beginning temperature Ms is calculated by the formula Ms (° C.)=1302?28Si?50Mn?63Ni?42Cr?30Mo+20Al?12Co?25Cu+10[Ti?4(C+N)]??(1) wherein the contents of the various elements are expressed in weight percentages, is greater than or equal to 50° C., preferably greater than or equal to 75° C. A part made in this steel and its manufacturing method are also provided.
    Type: Application
    Filed: November 25, 2014
    Publication date: October 6, 2016
    Applicant: AUBERT & DUVAL
    Inventor: Sylvain Pierre PUECH