Patents by Inventor Ulrich Irmiger

Ulrich Irmiger 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).

  • Noncaking, readily soluble dyestuff granulates of anionic dyestuffs
    Patent number: 3948599
    Abstract: Dyestuff granulates of anionic dyestuffs are described, the said granulates containing anionic dyestuff, optionally together with a surface-active agent and/or further auxiliaries, dissolved in a melt of urea, which granulates are solid, non-dusty, noncaking, and very easily and rapidly soluble or dispersible even in cold water, and are particularly suitable for the production of aqueous dye preparations, which can be used for the dyeing and printing of the widest variety of materials.
    Type: Grant
    Filed: April 30, 1973
    Date of Patent: April 6, 1976
    Assignee: Ciba-Geigy Corporation
    Inventors: Ulrich Irmiger, Zdenek Koci