Patents by Inventor Alfred H. Foessel

Alfred H. Foessel 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).

  • Process for making a pitch impregnated, cold molded refractory article
    Patent number: 4071593
    Abstract: A process is described for making shaped refractories by impregnating cold pitch-bonded shaped refractories with a liquid composition comprising hot pitch.
    Type: Grant
    Filed: August 29, 1975
    Date of Patent: January 31, 1978
    Assignee: General Refractories Company
    Inventors: Grant M. Farrington, J. Donald Harris, Alfred H. Foessel
  • Pitch water soluble resin and alkyd resin as binder composition for refractory particles
    Patent number: 4017433
    Abstract: A binder composition comprising pitch, an aqueous solution of a water soluble resin, and an organic solvent solution of a thermosetting polymer. The binding composition in combination with particulate refractory aggregate forms a molding composition suitable for use in making shaped refractory articles. Shaped refractory articles prepared from such a molding composition are particularly suitable for use as linings in basic oxygen process steel refining vessels. Shaped refractory articles may be prepared by coating coarse refractory aggregate with the organic solvent solution of a thermosetting polymer, admixing powdered pitch with the coated coarse refractory aggregate, blending fine refractory aggregate and the aqueous solution of the water soluble resin with the coated refractory aggregate-pitch mixture, and forming the resultant composition into shaped refractory articles.
    Type: Grant
    Filed: May 28, 1975
    Date of Patent: April 12, 1977
    Assignee: General Refractories Company
    Inventors: Grant M. Farrington, J. Donald Harris, Alfred H. Foessel