Patents by Inventor Ernst R. Freiesleben

Ernst R. Freiesleben 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).

  • Soil-removal microemulsion compositions
    Patent number: 5171475
    Abstract: Disclosed are emulsions made by simple agitation of about 99.9-20% water and about 0.1-80% progenitor solutions, the latter containing at least one surfactant, at least one solvent, and at least one emulsifier, the solvent being of selected polarity and all the ingredients being of selected refractive index. Also disclosed are methods of obtaining emulsions of a desired cleaning ability (which may be targeted to a specific cleaning task) and cost using a correlation (polarity/refractive index function) between cleaning ability, polarity of the solvent and refractive index of the solvent and other additives.
    Type: Grant
    Filed: October 25, 1990
    Date of Patent: December 15, 1992
    Assignee: Penetone Corporation
    Inventor: Ernst R. Freiesleben