Patents by Inventor James W. Laraway

James W. Laraway 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).

  • Water treatment process for oilfield produced water
    Patent number: 7718069
    Abstract: The invention relates to a method and system for treating an aqueous liquid containing dissolved minerals and dissolved hydrocarbons. Method steps and apparatus for treating a waste water feed stream are disclosed which utilize a warm lime softening system in fluid communication with the waste water feed stream, wherein sludge from the warm lime softening system is recycled to improve lime utilization and enhance silica and boron removal without the addition of an external source of magnesium. In addition, a microfiltration system and/or an air stripper system may be used in fluid communication with at least one reverse osmosis system to produce a treatment water that meets state and federal guidelines for surface discharge.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: May 18, 2010
    Assignee: Water & Power Technologies, Inc.
    Inventors: James W. Laraway, Richard E. Weber, Donald J. Thomas
  • WATER TREATMENT PROCESS FOR OILFIELD PRODUCED WATER
    Publication number: 20090173692
    Abstract: The invention relates to a method and system for treating an aqueous liquid containing dissolved minerals and dissolved hydrocarbons. Method steps and apparatus for treating a waste water feed stream are disclosed which utilize a warm lime softening system in fluid communication with the waste water feed stream, wherein sludge from the warm lime softening system is recycled to improve lime utilization and enhance silica and boron removal without the addition of an external source of magnesium. In addition, a microfiltration system and/or an air stripper system may be used in fluid communication with at least one reverse osmosis system to produce a treatment water that meets state and federal guidelines for surface discharge.
    Type: Application
    Filed: March 17, 2009
    Publication date: July 9, 2009
    Applicant: WATER & POWER TECHNOLOGIES, INC.
    Inventors: James W. Laraway, Richard E. Weber, Donald J. Thomas
  • Water treatment process for oilfield produced water
    Patent number: 7520993
    Abstract: The invention relates to a method and system for treating an aqueous liquid containing dissolved minerals and dissolved hydrocarbons. Method steps and apparatus for treating a waste water feed stream are disclosed which utilize a warm lime softening system in fluid communication with the waste water feed stream, wherein sludge from the warm lime softening system is recycled to improve lime utilization and enhance silica and boron removal without the addition of an external source of magnesium. In addition, a microfiltration system and/or an air stripper system may be used in fluid communication with at least one reverse osmosis system to produce a treatment water that meets state and federal guidelines for surface discharge.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: April 21, 2009
    Assignee: Water & Power Technologies, Inc.
    Inventors: James W. Laraway, Richard E. Weber, Donald J. Thomas