Patents by Inventor Wolf-Ruediger Gaefke

Wolf-Ruediger Gaefke 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).

  • Dye-containing microcapsules
    Patent number: 3939095
    Abstract: Microcapsules, particularly for the use in the manufacture of "no carbon required" copying material, which microcapsules contain as core material not only dye precursors but also mono- or poly-alkyl-substituted indans.
    Type: Grant
    Filed: August 8, 1973
    Date of Patent: February 17, 1976
    Assignee: Badische Anilin- & Soda-Fabrik Aktiengesellschaft
    Inventors: Wolfgang Sliwka, Wolf-Ruediger Gaefke, Tilmann Korth