Patents by Inventor Patrick Alborghetti

Patrick Alborghetti 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).

  • Stilbene optical brighteners
    Patent number: 9487503
    Abstract: The present invention discloses compounds of 4,4?-diaminostilbene-2,2?-disulphonic acid which are useful as optical brighteners to bleach fibers, cellulose and in particular paper and cardboard.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: November 8, 2016
    Assignee: 3V SIGMA S.P.A.
    Inventors: Ferruccio Berte', Patrick Alborghetti
  • STILBENE OPTICAL BRIGHTENERS
    Publication number: 20140339462
    Abstract: The present invention discloses compounds of 4,4?-diaminostilbene-2,2?-disulphonic acid which are useful as optical brighteners to bleach fibres, cellulose and in particular paper and cardboard.
    Type: Application
    Filed: July 17, 2014
    Publication date: November 20, 2014
    Inventors: Ferruccio Berte', Patrick Alborghetti