Patents by Inventor Jan P. Vijn

Jan P. Vijn 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).

  • Patent number: 9567509
    Abstract: Polymeric naphthenate inhibitors are delivered into production fluids to contact mixtures of oil and water, such as in a hydrocarbon producing formation, production equipment, or processing systems. These polymeric naphthenate inhibitors exhibit surface-active properties causing the inhibitors to self-associate at oil-water interfaces and inhibit interactions between organic acids in the oil and cations or cation complexes in water. The large surface area makes these polymers persistent and effective at low concentrations. These compounds also inhibit aggregation of organic acid carboxylate salts that form when pH and pressure conditions are amenable to organic acid ionization. Preferred inhibitors do not form emulsions due to the formation of unstable mixed interface structures that result in coalescence of dispersed droplets.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: February 14, 2017
    Assignee: Ecolab USA Inc.
    Inventors: Jan P. Vijn, Peter in't Veld
  • Publication number: 20120283147
    Abstract: Polymeric naphthenate inhibitors are delivered into production fluids to contact mixtures of oil and water, such as in a hydrocarbon producing formation, production equipment, or processing systems. These polymeric naphthenate inhibitors exhibit surface-active properties causing the inhibitors to self-associate at oil-water interfaces and inhibit interactions between organic acids in the oil and cations or cation complexes in water. The large surface area makes these polymers persistent and effective at low concentrations. These compounds also inhibit aggregation of organic acid carboxylate salts that form when pH and pressure conditions are amenable to organic acid ionization. Preferred inhibitors do not form emulsions due to the formation of unstable mixed interface structures that result in coalescence of dispersed droplets.
    Type: Application
    Filed: April 19, 2012
    Publication date: November 8, 2012
    Applicant: CHAMPION TECHNOLOGIES, INC.
    Inventors: Jan P. Vijn, Peter in't Veld
  • Patent number: 5588488
    Abstract: The present invention provides methods of cementing the junction of multi-lateral wells whereby the set cement can withstand impacts and shocks without shattering. A cement slurry composition which sets into a high strength impact resistant solid mass is utilized comprised of a styrene/butadiene aqueous latex, a latex stabilizer, hydraulic cement and appropriate cementing additives.
    Type: Grant
    Filed: August 22, 1995
    Date of Patent: December 31, 1996
    Assignee: Halliburton Company
    Inventors: Jan P. Vijn, Zacharias Xenakis, Daniel L. Bour, Jerry D. Childs