Patents Represented by Attorney W. L. Krayer

Find this attorney in the Justia Lawyer Directory

  • Inhibiting styrene emissions in unsaturated polyester resins
    Patent number: 4546142
    Abstract: An unsaturated polyester exhibiting low styrene emissions comprises conventional phthalic and maleic anhydrides together with specific amounts of diethylene glycol, styrene, and a particular type of paraffin wax.
    Type: Grant
    Filed: January 8, 1985
    Date of Patent: October 8, 1985
    Assignee: United States Steel Corporation
    Inventor: Leonard M. Walewski
  • Pellets useful in shaft furnace direct reduction and method of making same
    Patent number: 3975182
    Abstract: Iron ore or concentrates containing about 0.5 to about 3.0% silica, 0.5 to 1.0% bentonite and 96.5 to 99.0% iron oxide together with 7.0 to 12.0% moisture is pelletized, the pellets are surface-coated with about 1 to about 4.5% limestone and fired at a temperature of about 2100.degree. to about 2400.degree.F., the formed pellets being suitable for direct reduction temperatures above 1400.degree.F in a shaft furnace with a minimum of clustering.
    Type: Grant
    Filed: August 2, 1974
    Date of Patent: August 17, 1976
    Assignee: United States Steel Corporation
    Inventor: Harold E. Goetzman