Patents by Inventor Giuseppe Trigiante

Giuseppe Trigiante 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).

  • Process for the manufacture of hypochlorite bleaching compositions
    Patent number: 5928559
    Abstract: The present invention discloses a process for the manufacture of liquid aqueous bleaching compositions comprising alkali metal hypochlorite, a strong source of alkalinity and water; said process comprising the steps of: mixing alkali metal hypochlorite, strong source of alkalinity and said water, separating the insoluble species formed in the first step, and thereafter adding a chelating agent capable of chelating heavy metal ions. The compositions provided by the process according to the present invention are substantially free of heavy metal ions, thereby providing improved whiteness performance and/or fabric safety performance.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: July 27, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Mauririo Marchesini, Giuseppe Trigiante
  • Hypochlorite bleaching compositions
    Patent number: 5843190
    Abstract: An aqueous liquid bleaching composition having improved fabric whitening and fabric safety performance, said composition consisting of an alkali metal hypochlorite, an alkali metal silicate, a strong source of alkalinity, and an alkali metal carbonate.
    Type: Grant
    Filed: January 17, 1997
    Date of Patent: December 1, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Francesco Agostini, Andrea Agostini, Giuseppe Trigiante