Patents Represented by Attorney, Agent or Law Firm P. W. Leuzzi
  • Antifoam composition containing hydrocarbon-silicon copolymer, hydrophobic filler and hydrocarbon oil
    Patent number: 4514319
    Abstract: Hydrocarbon oil based antifoams compositions containing a hydrocarbon-silicon copolymer, a hydrophobic filler, an organo-silicone surfactant, a hydrocarbon carrier oil and optionally a silicone oil act to effectively defoam concentrated solutions, including those containing ionic surfactants or protein based solutions. The use of the hydrocarbon oil based silicone antifoams represents an inexpensive route to defoams difficult solutions.
    Type: Grant
    Filed: March 25, 1983
    Date of Patent: April 30, 1985
    Assignee: Union Carbide Corporation
    Inventors: Ravi D. Kulkarni, E. Desmond Goddard, Michael P. Aronson
  • Selective flocculation for increased coal recovery by froth flotation
    Patent number: 4268379
    Abstract: The use of a selective cationic polymeric flocculant in conjunction with froth flotation of coal results in increased coal recovery.
    Type: Grant
    Filed: December 23, 1977
    Date of Patent: May 19, 1981
    Assignee: American Cyanamid Company
    Inventors: Andrew C. Poulos, John D. Hightower