Patents by Inventor Daniel Thivellier

Daniel Thivellier 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).

  • Free machining steel
    Patent number: 4004922
    Abstract: Free machining low alloy steel compositions are prepared by addition of very small quantities of at least magnesium to previously deoxidized steel to provide a homogeneous distribution of globular sulfides and sulfurous inclusions of the additive.
    Type: Grant
    Filed: September 3, 1975
    Date of Patent: January 25, 1977
    Assignee: Ugine Aciers
    Inventors: Daniel Thivellier, Leon Seraphin, Roland Tricot