Patents by Inventor Pierre Macaudiere

Pierre Macaudiere 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).

  • Spinel-based catalysts for reducing exhaust emissions of NO.sub.x
    Patent number: 5736114
    Abstract: Oxygen-rich exhaust gases, for example those emanating from internal combustion engines, e.g., diesel engines, are catalytically treated/converted to reduce emissions of NO.sub.x, in the presence of a catalytically effective amount of either (a) a spinel mass oxide essentially having the formula ZnAl.sub.2 O.sub.4, or (b) a normal or inverse spinel oxide other than ZnAl.sub.2 O.sub.4, for example ZnGa.sub.2 O.sub.4, SnZnGa.sub.2 O.sub.4 or MgAl.sub.2 O.sub.4.
    Type: Grant
    Filed: April 7, 1995
    Date of Patent: April 7, 1998
    Assignee: Rhone-Poulenc Chimie
    Inventors: Philippe Barthe, Pierre Macaudiere, Thierry Seguelong
  • Rare earth metal sulfide pigments comprising fluorine values
    Patent number: 5501733
    Abstract: Fluoridated particulates, especially external face surface-fluoridated particulates of the rare earth metal sesquisulfide pigments/colorants, advantageously encapsulated within a coating layer of at least one transparent oxide or hydrate thereof, e.g., silica, have improved chromatic properties and are well suited for the coloration/pigmentation of a wide variety of materials and substrates, for example paints, plastics, resins, varnishes, rubbers, ceramics, glazes, papers, inks, leathers, cosmetics, dyes, coatings, etc.
    Type: Grant
    Filed: June 9, 1994
    Date of Patent: March 26, 1996
    Assignee: Rhone-Poulenc Chimie
    Inventors: Pierre Macaudiere, Jorge Morros, Jean-Michel Tourre, Alain Tressaud