Patents by Inventor Lisa C. Hurckes

Lisa C. Hurckes 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).

  • Patent number: 4919841
    Abstract: A process is provided for preparing encapsulated active particles by the steps of: dispersing active materials in molten wax; emulsifying the active/wax dispersion in aqueous surfactant solution for no longer than 4 minutes; quenching the capsules by cooling; and retrieving solidified capsules. The active materials may be selected from chlorine or oxygen bleaching agents, bleach precursors, enzymes, perfumes, fabric softening agents, and surfactants. Optimal capsules are obtainable where a blend of hard and soft waxes are utilized for the coating. The hard and soft waxes are characterized by needle penetration values no higher than 30 mm and no lower than 35 mm, respectively, at 25.degree. C. The resultant capsules have utility for cleaning compositions such as automatic dishwashing detergent formulations.
    Type: Grant
    Filed: June 6, 1988
    Date of Patent: April 24, 1990
    Assignee: Lever Brothers Company
    Inventors: Ahmed Kamel, Lisa C. Hurckes, Monica M. Morelli