Patents by Inventor Darryl M. Stepien

Darryl M. Stepien 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).

  • NOVEL COPOLYMERS FOR USE AS OILFIELD DEMULSIFIERS
    Publication number: 20150122742
    Abstract: Lactone/alkylene oxide polymers are useful as demulsifiers to break emulsions, e.g. water-in-oil and oil-in-water emulsions, particularly oilfield emulsions. These polymers are random or block polymer made from addition reactions of a hydroxyl- and/or amine-containing base compound with at least one lactone monomer and at least one alkylene oxide monomer.
    Type: Application
    Filed: January 15, 2015
    Publication date: May 7, 2015
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Matthew Hilfiger, Michael P. Squicciarini, Christine Ann Blundell, Darryl M. Stepien, Patrick J. Breen
  • Novel Copolymers for Use as Oilfield Demulsifiers
    Publication number: 20120059088
    Abstract: Lactone/alkylene oxide polymers are useful as demulsifiers to break emulsions, e.g. water-in-oil and oil-in-water emulsions, particularly oilfield emulsions. These polymers are random or block polymer made from addition reactions of a hydroxyl- and/or amine-containing base compound with at least one lactone monomer and at least one alkylene oxide monomer.
    Type: Application
    Filed: August 24, 2011
    Publication date: March 8, 2012
    Applicant: Baker Hughes Incorporated
    Inventors: Matthew Hilfiger, Michael P. Squicciarini, Christine Ann Blundell, Darryl M. Stepien, Patrick J. Breen