Patents Represented by Attorney Mark E. Waddel

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  • Light screening compositions
    Patent number: 6018044
    Abstract: The present invention concerns new s-triazines of the formula ##STR1## wherein W.sup.1, W.sup.2 and W.sup.3 each independently signifies C.sub.1 -C.sub.20 alkyl or a group SpSil;X.sup.1, X.sup.2 and X.sup.3 each independently signifies O or NH;Sp signifies a spacer group;Sil signifies a silane, an oligosiloxane or a polysiloxane moiety; with the proviso that at least one of W.sup.1, W.sup.2 and W.sup.3 signifies SpSil.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: January 25, 2000
    Assignee: Roche Vitamins Inc.
    Inventor: Ulrich Huber