Patents by Inventor Salvatore Valenti

Salvatore Valenti 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).

  • Para-phenyl stilbene derivatives
    Patent number: 4032558
    Abstract: Stilbene derivatives having at least one further phenyl substituent in the para-position to a benzene ring in the stilbene are optical brighteners particularly suitable for incorporation on spinning masses.
    Type: Grant
    Filed: July 16, 1975
    Date of Patent: June 28, 1977
    Assignee: Sandoz Ltd.
    Inventors: Fritz Fleck, Hans Kittl, Salvatore Valenti
  • Monobenzoxazolylstilbenes
    Patent number: 3996210
    Abstract: Monobenzoxazolylstilbenes of formula ##STR1## wherein R--O is lower alkoxy and stands in one of the positions 5 or 6,R.sub.1 is hydrogen or lower alkyl andR.sub.2 is hydrogen, chlorine or lower alkyl.
    Type: Grant
    Filed: June 8, 1970
    Date of Patent: December 7, 1976
    Assignee: Sandoz Ltd.
    Inventors: Fritz Fleck, Salvatore Valenti