Patents by Inventor Anton Koller

Anton Koller 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: 4631072
    Abstract: The disclosure relates to a mixture for the care and cleaning of contact lenses, containing water, an abrasive based on one or several metal oxides, and a suspension aid based on swellable compounds. The abrasive is zinc oxide and/or tin oxide having a grain size smaller than 10 .mu.m and a suspension aid based on swellable compounds, such as polyvinyl alcohol, cellulose derivatives, guar gum, as well as optionally buffers for adjusting the pH value to between 5 and 8 and/or sodium chloride, the ratio of abrasive to water in the mixture ranging between 1:99 and 90:10, and the grain size of the abrasive being preferably in a range of 0.5 .mu.m.
    Type: Grant
    Filed: December 9, 1985
    Date of Patent: December 23, 1986
    Inventor: Anton Koller