Patents by Inventor James Henry Davidson

James Henry Davidson 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).

  • Austenitic stainless steel for use when hot
    Patent number: 5753178
    Abstract: Austenitic stainless steel for use when hot, the chemical composition of which, by weight, includes from 16% to 25% of Ni, from 16% to 18.5% of Cr, from 0% to 3% of Mo, from 0% to 2% of Mn, from 1% to 3.5% of Ti, from 0% to 1.5% of Al, less than 0.1% of C+N, up to 0.025% of B, the remainder being iron and impurities resulting from the production; the chemical composition additionally satisfying the relations:(0.94.times.Ni-65.times.F)/(1-F).gtoreq.12and17.ltoreq.(1.07.times.Cr-1.5.times.F)/(1-F).ltoreq.22with:F=0.0444.times.Ti+0.0777.times.Al-0.0592.
    Type: Grant
    Filed: August 8, 1996
    Date of Patent: May 19, 1998
    Assignee: IMPHY S.A.
    Inventors: James Henry Davidson, Williams Mihoub