Patents Examined by Tim D. Saunders
  • Inks containing a water soluble compound as a stabilizer particularly for ink jet printing
    Patent number: 5089050
    Abstract: Inks, in particular for ink-jet printing, containing, as stabilizer, a water-soluble compound of the formula ##STR1## in which R.sub.1 to R.sub.7 are as defined in claim 1, and recording materials containing these compounds.
    Type: Grant
    Filed: May 6, 1991
    Date of Patent: February 18, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Eric Vieira, David G. Leppard, Hugh S. Laver, Vien V. Toan