Patents by Inventor Charles J. Berzansky, Jr.

Charles J. Berzansky, Jr. 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).

  • Polybutene-based foam control composition for aqueous systems
    Patent number: 5562862
    Abstract: A stable defoamer composition and method of defoaming an aqueous system is disclosed. The composition comprises an alcohol alkoxylate, at least one surfactant having a melting point less than 20.degree. C., and a low HLB, ethylene oxide/propylene oxide block copolymer, said block copolymer carried in a mixture comprising polybutene.
    Type: Grant
    Filed: April 6, 1994
    Date of Patent: October 8, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Charles J. Berzansky, Jr., Duy T. Nguyen
  • Use of foam control composition in aqueous systems
    Patent number: 5425899
    Abstract: A method for reducing or preventing the generation of foam in aqueous environments by adding to the aqueous medium from 1.0 to 500 ppm of a foam control composition consisting of a .beta.-branched aldol ether alcohol, at least one surfactant having a melting point less than 20.degree. C. and a low HLB ethylene oxide-propylene oxide block copolymer.
    Type: Grant
    Filed: March 11, 1994
    Date of Patent: June 20, 1995
    Assignee: Betz PaperChem, Inc.
    Inventors: Duy T. Nguyen, Charles J. Berzansky, Jr.
  • Foam control compositions
    Patent number: 5320777
    Abstract: A method for reducing or preventing the generation of foam in aqueous environments by adding to the aqueous medium from 1.0 to 500 ppm of a foam control composition consisting of a .beta.-branched aldol ether alcohol, at least one surfactant having a melting point less than 20.degree. C. and a low HLB ethylene oxide-propylene oxide block copolymer.
    Type: Grant
    Filed: June 10, 1992
    Date of Patent: June 14, 1994
    Assignee: Betz PaperChem, Inc.
    Inventors: Duy T. Nguyen, Charles J. Berzansky, Jr.