Patents Assigned to EDRO Engineering, Inc.
  • Steel holder block for plastic molding
    Patent number: 6358334
    Abstract: A manufacturing mold base for plastic injection molds is formed from a martensitic stainless steel alloy comprising: about 0.03%-0.06% by weight C, about 1.0%-1.6% by weight Mn, about 0.01%-0.03% by weight P, about 0.06%-0.3% by weight S, about 0.25%-1.0% by weight Si, about 12.0%-14.0% by weight Cr, about 0.5%-1.3% by weight Cu, about 0.01%-0.1% by weight V, about 0.02%-0.08% by weight N, with the balance being Fe with trace amounts of ordinarily present elements.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: March 19, 2002
    Assignee: EDRO Engineering, Inc.
    Inventors: Eric D. Henn, Robert J. Friedrich, Michael A. Guscott
  • Steel holder block for plastic molding
    Patent number: 6045633
    Abstract: A manufacturing mold base for plastic injection molds is formed from a martensitic stainless steel alloy comprising: about 0.03%-0.06% by weight C, about 1.0%-1.6% by weight Mn, about 0.01%-0.03% by weight P, about 0.06%-0.3% by weight S, about 0.25%-1.0% by weight Si, about 12.0%-14.0% by weight Cr, about 0.5%-1.3% by weight Cu, about 0.01%-0.1% by weight V, about 0.02%-0.08% by weight N, with the balance being Fe with trace amounts of ordinarily present elements.
    Type: Grant
    Filed: May 14, 1998
    Date of Patent: April 4, 2000
    Assignee: EDRO Engineering, Inc.
    Inventors: Eric D. Henn, Robert J. Friedrich, Michael A. Guscott