Patents by Inventor Sergio Fabbri

Sergio Fabbri 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).

  • Dyeing process
    Patent number: 3980428
    Abstract: The present invention relates to a process for dyeing or printing organic substrates in the presence of lactone, the amount of which is sufficient to adjust the pH value of the dyeing or printing medium from a neutral or basic value to a value from 4.0 to 6.5.
    Type: Grant
    Filed: October 31, 1973
    Date of Patent: September 14, 1976
    Assignee: Sandoz Ltd.
    Inventors: Sergio Fabbri, Josef Frauenknecht
  • Dyeing process
    Patent number: 3953168
    Abstract: Disclosed is a process for dyeing or printing a voluminous textile substrate comprising natural or synthetic polyamide fibres, which process comprises applying to the substrate an aqueous dyeing or printing medium containing 0.05 to 100 g/l of a foaming agent, forming a foam on said substrate, rolling up the substrate and rotating the rolled up substrate for a period of from 1 to 48 hours at a temperature of from 20.degree. to 60.degree.C to effect fixation.
    Type: Grant
    Filed: July 15, 1974
    Date of Patent: April 27, 1976
    Assignee: Sandoz Ltd.
    Inventors: Sergio Fabbri, Josef Frauenknecht