Patents by Inventor Robert Goffin

Robert Goffin 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).

  • Calcium and/or magnesium hydroxide, and preparation and use thereof
    Patent number: 5705141
    Abstract: The invention relates to a method for the preparation of a special calcium and/or magnesium hydroxide in which CaO and/or MgO is reacted with water in the presence of an additive selected among ethylene glycol, diethylene glycol, triethylene glycol, monoethanolamine, diethanolamine, triethanolamine and mixtures thereof, the weight ratio additive to CaO and/or MgO being greater than 0.002:1.
    Type: Grant
    Filed: January 18, 1996
    Date of Patent: January 6, 1998
    Assignee: Lhoist Researche et Developpement S.A.
    Inventors: Philippe A. Dumont, Robert Goffin
  • Agglomerated product with paper fibers
    Patent number: 5591247
    Abstract: A conglomerated material based on metallurgical by-products and characterized in that it contains 2-10% of fibers, 9-25% wt of an alkaline earth metal hydroxide, and % wt of water.
    Type: Grant
    Filed: July 25, 1994
    Date of Patent: January 7, 1997
    Assignee: Lhoist Recherche et Developpement S.A.
    Inventors: Philippe Dumont, Robert Goffin
  • Method of foliar application of magnesium hydrogen carbonate
    Patent number: 5552366
    Abstract: A dilute aqueous solution containing less than 80 g/l of magnesium hydrogen carbonate of formula Mg(HCO.sub.3).sub.2 can be used for the curative treatment of plants attacked by magnesium deficiency or preventively as complementary magnesium fertilizer and as photosynthetic activator of growth of plants by simple spraying onto them.An aqueous solution of magnesium hydrogen carbonate Mg(HCO.sub.3).sub.2 is prepared from MgO as starting material by mixing it into water and by treating the solution or suspension thus obtained with gaseous carbon dioxide, at a temperature below 40.degree. C. under a pressure greater than 5.times.10.sup.5 pascals (5 bars).
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: September 3, 1996
    Assignee: Lhoist Recherche et Developpment S.A.
    Inventors: Henri-Rene Langelin, Robert Goffin
  • Vaterite and production method
    Patent number: 5290353
    Abstract: The present invention relates to a process for the preparation of substantially spherical monocrystalline vaterite, in particular, of vaterite having a determined size.
    Type: Grant
    Filed: January 22, 1993
    Date of Patent: March 1, 1994
    Assignee: Lhoist Recherche et Developpement S.A.
    Inventors: Robert Goffin, Henri-Rene Langelin
  • Method and composition for treating flue or exhaust gases utilizing modified calcium hydroxide
    Patent number: 5277837
    Abstract: A process is shown for treating flue or exhaust gases in order to remove sulfur oxides and hydrochloric acids in which calcium hydroxide having a surface area of at least 25 m.sup.
    Type: Grant
    Filed: September 17, 1992
    Date of Patent: January 11, 1994
    Assignee: Lhoist Recherche et Developpement S.A.
    Inventors: Philippe A. Dumont, Robert Goffin
  • Method and composition for treating flue or exhaust gases utilizing modified calcium hydroxide
    Patent number: 5173279
    Abstract: A process is shown for treating flue or exhaust gases in order to remove sulfur oxides and hydrochloric acids in which calcium hydroxide having a surface area of at least 25 m.sup.2 /g and a moisture content lower than 50% is injected in the gases to be treated either alone, or in a mixture with magnesium hydroxide. The calcium hydroxide used in the process is prepared by reacting quicklime or dolomitic quicklime with water in the presence of a glycol or an amine companion additive.
    Type: Grant
    Filed: November 21, 1990
    Date of Patent: December 22, 1992
    Assignee: Lhoist Recherche et Developpement S.A.
    Inventors: Philippe A. Dumont, Robert Goffin