Patents by Inventor Mark L. L. Lapper

Mark L. L. Lapper 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).

  • Process for making detergent compositions
    Patent number: 4298491
    Abstract: The autoxidation of aqueous detergent slurries containing major quantities of nonionic surfactant during spray-drying is inhibited by the use of a charge-transfer agent. The charge-transfer agent may be a charge-transfer acceptor or a charge-transfer donor or a precursor of either of these. The agent may be present in an amount of from 0.05 to 2% by weight and the nonionic surfactant in an amount of 3% or more by weight based on the weight of the fully formulated detergent powder. The preferred charge-transfer agent is potassium iodide.
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: November 3, 1981
    Assignee: Lever Brothers Company
    Inventors: Andrew C. Coxon, David J. Edge, Mark L. L. Lapper