Patents by Inventor Oscar Cornelius Johanna Nijs

Oscar Cornelius Johanna Nijs 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).

  • Emulsion for well and formation treatment
    Patent number: 6364020
    Abstract: An emulsion with flow-initiated gelling properties is described, comprising at least two discontinuous phases with a polymer and cross-linking agent separated by two phase boundaries. The novel emulsion is preferably used for remedial operations in a subterranean formation or wellbore.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: April 2, 2002
    Assignee: Schlumberger Technology Corporation
    Inventors: John Peter Crawshaw, Oscar Cornelius Johanna Nijs