Patents Represented by Attorney Roger W. Herrell, Jr., Esquire

Find this attorney in the Justia Lawyer Directory

  • Promoter and plasmid system for genetic engineering
    Patent number: 8192959
    Abstract: This invention provides a series of low-copy number plasmids comprising restriction endonuclease recognition sites useful for cloning at least three different genes or operons, each flanked by a terminator sequence, the plasmids containing variants of glucose isomerase promoters for varying levels of protein expression. The materials and methods are useful for genetic engineering in microorganisms, especially where multiple genetic insertions are sought.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: June 5, 2012
    Assignees: Genencor International Inc, E I du Pont de Nemours and Company
    Inventors: Mark S. Payne, Stephen K. Picataggio, Amy K. Hsu, Ramesh V. Nair, Fernando Valle, Philippe Soucaille, Donald E. Trimbur
  • Method for enhanced recovery of oil from oil reservoirs
    Patent number: 8193126
    Abstract: The present invention provides a method for recovering oil from a subterranean reservoir using waterflooding, wherein the flooding fluid used in the waterflooding process comprises water and one or more ionic polyvinyl alcohol copolymers. The use of one or more ionic polyvinyl alcohol copolymers is expected to increase the recovery of oil by improving both the oil/water mobility ratio and the sweep efficiency in reservoirs with a high degree of heterogeneity.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: June 5, 2012
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Scott Christopher Jackson, Peter A. Morken, George David Robinson, Elliott Echt
  • Method for enhancing effects of colorants and conditioners
    Patent number: 7964180
    Abstract: Methods are provided for enhancing the longevity of the binding of various benefit agents to hair and skin. Applications of traditional and non-traditional colorants and conditioners to hair and skin are amended with compositions of hair or skin-binding peptides respectively. The presence of the hair or skin-binding peptide compositions act to increase the longevity of the applied colorant or conditioner on the hair or skin.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: June 21, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: William A. Beck, John P. O'Brien, Hong Wang