Patents Assigned to United States of America Environmental Protection Agency
  • Biological remediation of creosote- and similarly-contaminated sites using Pseudomonas paucimobilis
    Patent number: 5242825
    Abstract: This invention concerns a biological process for remediating creosote-contaminated sites or environment sites containing polycyclic aromatic hydrocarbons generally found in creosote-contaminated sites. The biological process comprises novel bacterium, Pseudomonas paucimobilis strain EPA 505 sc., which can degrade recalcitrant chemical compounds.
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: September 7, 1993
    Assignee: United States of America Environmental Protection Agency
    Inventors: James G. Mueller, Peter J. Chapman
  • Lignosulfonate-modified calcium hydroxide for SO.sub.2 control during furnace injection
    Patent number: 5135729
    Abstract: A method is provided for removing sulphur-containing gases from fossil fuel-fired combustors comprising the step of introducing sorbent particles modified with lignosulfonates into the exhaust gases.
    Type: Grant
    Filed: April 3, 1990
    Date of Patent: August 4, 1992
    Assignee: United States of America Environmental Protection Agency
    Inventors: David A. Kirchgessner, Jeffrey M. Lorrain
  • Lignosulfonate-modified calcium hydroxide for SO2 control during furnace injection
    Patent number: 4882309
    Abstract: A method is provided for removing sulphur-containing gases from fossil fuel-fired combustors comprising the step of introducing sorbent particles modified with lignosulfonates into the exhaust gases.
    Type: Grant
    Filed: August 9, 1988
    Date of Patent: November 21, 1989
    Assignee: United States of America Environmental Protection Agency
    Inventors: David A. Kirchgessner, Jeffrey M. Lorrain