Patents Examined by Michael Maicheschi
  • Refractory ceramic mass and its use
    Patent number: 5646079
    Abstract: The present invention pertains to an electrically conductive, dry, refractory ceramic mass based on a refractory oxidic matrix material containing a source of carbon, such as graphite, carbon black or petroleum coke.
    Type: Grant
    Filed: July 5, 1995
    Date of Patent: July 8, 1997
    Assignee: Veitsch-Radex Aktiengesellschaft Fur Feuerfeste Erzeungnisse
    Inventor: Wilfried Eckstein
  • Use of a refractory ceramic brick for lining cement rotary kilns
    Patent number: 5565390
    Abstract: The present invention pertains to the use of a refractory ceramic brick based on MgO containing 3% to 23% of a pre-synthesized MgO.times.Al.sub.2 O.sub.3 (MA spinel) with an Al.sub.2 O.sub.3 content of 75 to 95 wt. % for lining cement rotary kilns.
    Type: Grant
    Filed: November 10, 1994
    Date of Patent: October 15, 1996
    Assignee: Veitsch-Radex Aktiengesellschaft fur feuerfeste Erzeugnisse
    Inventor: Josef Nievoll
  • Structural products manufactured from fly ash
    Patent number: 5534058
    Abstract: A structural product fabricated from waste materials and a method for making the product. The product includes fly ash, cellulose-based material and an adhesive binder. The product advantageously has good strength with light weight, can be sawed or hammered like wood and is substantially resistant to fire. The composition is particularly useful for forming structural products such as bricks, panels, roof shingles, studs and the like.
    Type: Grant
    Filed: January 27, 1995
    Date of Patent: July 9, 1996
    Assignee: Midway Environmental Associates, Inc.
    Inventor: William M. Strabala