Patents by Inventor Mathias Dust

Mathias Dust 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).

  • Methine dyes and optical recording medium containing same
    Patent number: 5093492
    Abstract: Methine dyes of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, X, Y and the rings A and B each have specific meanings, and methine dyes obtainable by reacting an organic mono- or polyisocyanate with such a methine dye of the abovementioned formal where only the radicals R.sup.1 and/and R.sup.4 have a group reacting with an organic mono- or polyisocyanate are useful in optical recording media.
    Type: Grant
    Filed: August 7, 1990
    Date of Patent: March 3, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Acker, Mathias Dust, Peter Neumann, Sibylle Brosius, Klaus D. Schomann, Harald Kuppelmaier