Patents by Inventor Ginter Vurlicer

Ginter Vurlicer 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 preparing stable positively charged alumina coated silica sols and product thereof
    Patent number: 3956171
    Abstract: Stable sols of positively charged colloidal silica are prepared from a water soluble basic aluminum salt and a negatively charged colloidal silica sol by introducing into the reaction mixture a carbonate, bicarbonate or phosphate salt which is soluble in the reaction mixture or a mixture of any of them.
    Type: Grant
    Filed: July 30, 1973
    Date of Patent: May 11, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Earl P. Moore, Jr., Ginter Vurlicer