Patents by Inventor Jacques Bayol

Jacques Bayol 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).

  • Martenstitic stainless steel with improved machinability
    Patent number: 5427635
    Abstract: The subject of the invention is a martensitic stainless steel with improved machinability, characterized in that its weight composition is the following:carbon lower than 1.2%silicon lower than or equal to 2%manganese lower than or equal to 2%chromium: 10.5.ltoreq.Cr.ltoreq.19%sulphur lower than or equal to 0.55%calcium higher than 32.times.10.sup.-4 %oxygen higher than 70.times.10.sup.-4 %the ratio of the calcium and oxygen content Ca/O being 0.2.ltoreq.Ca/O.ltoreq.0.6, the said steel being subjected to at least one quenching heat treatment to give it a martensitic structure.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: June 27, 1995
    Assignee: Ugine Savoie
    Inventors: Olivier Bletton, Jacques Bayol, Pascal Terrien