Patents by Inventor Hugo R. Usala

Hugo R. Usala 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).

  • Castable ceramic compositions
    Patent number: 4613648
    Abstract: A castable ceramic composition comprising finely divided particles of ceramic solids dispersed in a solution of alkyl acrylate/alkyl methacrylate/carboxylic acid or amine multipolymer in solvent. The ratio of the weight average and number average molecular weights of the multipolymer must be from 2 to 5.5.
    Type: Grant
    Filed: May 24, 1985
    Date of Patent: September 23, 1986
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Hugo R. Usala
  • Castable ceramic compositions
    Patent number: 4536535
    Abstract: A castable ceramic composition comprising finely divided particles of ceramic solids dispersed in a solution of alkyl acrylate/alkyl methacrylate/carboxylic acid or amine multipolymer in solvent. The ratio of the weight average and number average molecular weights of the multipolymer must be from 2 to 5.5.
    Type: Grant
    Filed: March 29, 1984
    Date of Patent: August 20, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Hugo R. Usala