Patents by Inventor Godwin Joseph Igwe

Godwin Joseph Igwe 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).

  • Method for remediating contaminated soils
    Patent number: 6492572
    Abstract: A method is disclosed for the degradation of persistent contaminants in soil. The method provides the combination of a stabilizing reagent and a degradative reagent where both are admixed into a contaminated soil site for the reduction of permeability at the site and the chemical degradation of the contaminant over time.
    Type: Grant
    Filed: March 5, 2001
    Date of Patent: December 10, 2002
    Assignees: E. I. du Pont de Nemours and Company, Texas A&M University Systems
    Inventors: Bill Batchelor, Alison Marie Hapka, Godwin Joseph Igwe, Richard Howard Jensen, Michael F. McDevitt, Dale S. Schultz, Joyce May Whang
  • Polyamide/polyurethane micro-blend and process
    Patent number: 5973013
    Abstract: Disclosed is a process for melt blending a mixture of a thermoplastic polyamide and segmented thermoplastic copolymers of polyurethane and the product thereof. The process of the invention is useful for recycling textile goods, such as pantyhose, into a form useful for fabricating into shaped articles such as moldings, sheets, and fibers.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: October 26, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Godwin Joseph Igwe
  • Method for Remediating contaminated soils
    Patent number: 5789649
    Abstract: A method is disclosed for the degradation of persistent contaminants in soil. The method provides the combination of a stabilizing reagent and a degradative reagent where both are admixed into a contaminated soil site for the reduction of permeability at the site and the chemical degradation of the contaminant over time.
    Type: Grant
    Filed: August 27, 1996
    Date of Patent: August 4, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Bill Batchelor, Alison Marie Hapka, Godwin Joseph Igwe, Richard Howard Jensen, Michael F. McDevitt, Dale S. Schultz, Joyce May Whang