Patents Assigned to Pharmaserve Limited
  • Zinc glycerolate manufacture
    Patent number: 5646324
    Abstract: Zinc glycerolate comprised of plate-like crystals is prepared by heating a mixture of zinc oxide, or zinc oxide precursor compound, with glycerol at 15.degree. C. to 105.degree. C., usually at least 45.degree. C. Excess glycerol can be removed from the crude zinc glycerolate product by washing at least once with a C.sub.1 -C.sub.4 alkanol, preferably isopropanol.
    Type: Grant
    Filed: May 14, 1996
    Date of Patent: July 8, 1997
    Assignees: Pharmaserve Limited, Stiefel Laboratories (Ireland) Limited
    Inventors: David A. Matkin, Dennis C. Renshaw, Anthony R. Harrison