The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 2010
Filed:
Oct. 01, 2008
John K. Newman, Vicksburg, MS (US);
David B. Ringelberg, Bradford, VT (US);
Kevin P. O'connell, Abingdon, MD (US);
William A. Martin, Vicksburg, MS (US);
Victor F. Medina, Vicksburg, MS (US);
Steven L. Larson, Vicksburg, MS (US);
John K. Newman, Vicksburg, MS (US);
David B. Ringelberg, Bradford, VT (US);
Kevin P. O'Connell, Abingdon, MD (US);
William A. Martin, Vicksburg, MS (US);
Victor F. Medina, Vicksburg, MS (US);
Steven L. Larson, Vicksburg, MS (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Abstract
Modifications to the extracellular polymeric substance, predominantly extracellular polysaccharide, of a biopolymer produced byATCC 49672 yield a stable dry salt transported more easily than a fluid or gel and more stable than either. The salt may be re-constituted with water on-site. Embodiments may be employed as a soil amendment for soil strengthening, reducing hydraulic conductivity, erosion control and dust control as well as a metal chelator for contaminant remediation. Based on comparison with dextran standards, an embodiment demonstrated a molecular weight over 511,000 D. Embodiments include a day salt that is precipitated from solution and in use is re-hydrated back to original form. When added to a sandy soil at 0.1% by dry weight, an embodiment decreased the hydraulic conductivity by three orders of magnitude. These properties make embodiments of the present invention an attractive, 'green' alternative to petroleum-based synthetic polymers for such applications as rapid roadway construction and soil erosion prevention.