Patents by Inventor Robert D. E. M. Bronchart

Robert D. E. M. Bronchart 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 treating oil slicks
    Patent number: 4623468
    Abstract: A method for reducing oil slick on seawater comprising applying to the oil slick a dispersing compositions containing at least one surface-active agent, at least one solvent, and a nitrogen-containing compound which is a nutrient for the micro-organisms which are active in oil metabolism. The nitrogen-containing compound is a monoalkylguanidinium salt ##STR1## wherein R is an aliphatic hydrocarbon radical, saturated or unsaturated, containing from about 8 to about 20 carbon atoms, and X is a halogen or an acid anion.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: November 18, 1986
    Assignee: Labofina, S.A.
    Inventors: Andre Lepain, Robert D. E. M. Bronchart
  • Compositions and method for treating oil slicks
    Patent number: 4512914
    Abstract: Compositions for treating oil slicks on seawater said dispersing compositions containing at least one surface-active agent, at least one solvent, and a nitrogen-containing compound which is a nutrient for the micro-organisms which are active in oil metabolism. The nitrogen-containing compound is a monoalkylguanidinium salt ##STR1## wherein R is an aliphatic hydrocarbon radical, saturated or unsaturated, containing from about 8 to about 20 carbon atoms, and X is a halogen or an acid anion.
    Type: Grant
    Filed: February 3, 1983
    Date of Patent: April 23, 1985
    Assignee: Labofina, S.A.
    Inventors: Andre Lepain, Robert D. E. M. Bronchart
  • Oil slick dispersants using diguanidinium salt
    Patent number: 4462910
    Abstract: A process for disposing of oil slicks on seawater comprises treating the polluted seawater with a liquid dispersing composition and a nitrogen-containing nutrient for the seawater micro-organisms which are active in oil metabolization. The nutrient is a diguanidinium salt having the general formula:XH.H.sub.2 N--C(.dbd.NH)--NH--R--NH--C(.dbd.NH)--NH.sub.2 HXwherein R is preferably an alkyl radical containing from 2 to 12 carbon atoms and X is a halogen or an acid anion.
    Type: Grant
    Filed: February 3, 1983
    Date of Patent: July 31, 1984
    Assignee: Cosden Technology, Inc.
    Inventors: Andre Lepain, Robert D. E. M. Bronchart