Patents by Inventor Henry Mercier

Henry Mercier 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).

  • Alumina agglomerates with good mechanical strength and a method of obtaining them
    Patent number: 4159313
    Abstract: Alumina agglomerates with high mechanical strength and selectable particle size are obtained by compacting an intermediate product resulting from incomplete decomposition of a substance of the group comprising hexahydrated aluminum chloride, hydrated aluminum nitrate, hydrated aluminum sulfate of the formula Al.sub.2 O.sub.3, xSO.sub.3, yH.sub.2 O and hydrated aluminum sulfite of the formula Al.sub.2 O.sub.3, xSO.sub.2, yH.sub.2 O, which after thermal decomposition contain from 0.5 to 15% by weight of Cl, of nitrogen oxide expressed as N.sub.2 O.sub.5 or of sulfur expressed as SO.sub.3 or SO.sub.2, which compacted product is then granulated and the granulated product subjected to heat treatment.
    Type: Grant
    Filed: July 22, 1977
    Date of Patent: June 26, 1979
    Assignee: Aluminum Pechiney
    Inventors: Henry Mercier, Joseph Cohen, Pierre Maurel