Patents by Inventor Hubert Wachsmann

Hubert Wachsmann 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: 3945792
    Abstract: A process for the filling of leather tanned with mineral, vegetable and/or synthetic tanning agents by treating the leather, in the acid pH-range , with an aqueous solution of a filling agent consisting of unsubstituted or substituted homo- or copolymeric acrylic acids and protein glue, alone or in admixture with further additives, as well as dry or liquid compositions thereof, are disclosed; thereby an even fullness of the leather is obtained without impairing the handle, the buffing properties, the tightness of the grain, the fine grain or the dyeability of said leathers.
    Type: Grant
    Filed: February 28, 1973
    Date of Patent: March 23, 1976
    Assignee: Ciba-Geigy Corporation
    Inventors: Albert Wurmli, Hubert Wachsmann