Patents Represented by Attorney Alan T. Bowes
  • Patent number: 4336101
    Abstract: Process and apparatus for recovering clean water and solids from aqueous solids. Aqueous solids are mixed with a low viscosity, relatively volatile, water-immiscible light fluidizing oil to obtain a mixture which will remain fluid and pumpable after removal of essentially its entire water content. The mixture of solids, water and fluidizing oil is subjected to a dehydration step by heat evaporation whereby substantially all of the water and at least part of the light oil are evaporated and subsequently recovered. The light fluidizing oil is then largely separated from the solids. Those solids carrying residual light fluidizing oil are then brought into direct contact with steam, referred to herein as "blowing steam". The presence of the blowing steam reduces the boiling point of the water-immiscible light fluidizing oil to effect its more efficient removal from the solids. Effluent blowing steam and light oil vapor removed from the solids may be used to supply heat to the overall process.
    Type: Grant
    Filed: February 11, 1981
    Date of Patent: June 22, 1982
    Assignee: Hanover Research Corporation
    Inventors: Charles Greenfield, Robert E. Casparian, Anthony J. Bonanno
  • Patent number: 4335216
    Abstract: Low temperature fired dielectric ceramic compositions are prepared by firing, at temperatures between about 1000.degree. C. and about 1150.degree. C., a base ceramic preparation comprising barium titanate, strontium titanate, barium zirconate, titanium dioxide and manganese dioxide mixed with a glass frit comprising zinc oxide, silicon dioxide, boron oxide, lead oxide, bismuth tioxide, and cadmium oxide. The resulting dielectric ceramic composition is useful to form multilayer ceramic capacitors.
    Type: Grant
    Filed: May 1, 1981
    Date of Patent: June 15, 1982
    Assignee: TAM Ceramics, Inc.
    Inventors: Charles E. Hodgkins, Mark J. Giermek