Patents by Inventor Aldo Rusconi

Aldo Rusconi 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).

  • Method of preparation of improved nigrosine and indulino dyes
    Patent number: 4230855
    Abstract: Nigrosine and induline dyes having improved rheological properties are prepared by treating a base of the nigrosine or induline series with between 15 and 30% by weight of phthalic anhydride, at a temperature between 135.degree. and 150.degree. C. The resulting dyes are readily dispersible in plastics and inks and provide finished products having improved flowability.
    Type: Grant
    Filed: October 30, 1978
    Date of Patent: October 28, 1980
    Assignee: Montedison S.p.A.
    Inventors: Mario Capaccioni, Laurentino Gentile, Aldo Rusconi