Patents by Inventor Italo Anceschi

Italo Anceschi 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).

  • Whitener dispersion
    Patent number: 5051111
    Abstract: There are disclosed aqueous dispersions comprising water-insoluble or sparingly soluble fluorescent whitening agents, water-soluble fluorescent whitening agents, dispersants, optional solubilizers, further optional assistants and a copolymer of 2-vinylpyrrolidone and 3-vinylpropionic acid, their preparation and the use thereof for whitening polyester/cellulose fiber material. These novel dispersions are storage-stable and temperature-stable.
    Type: Grant
    Filed: November 22, 1988
    Date of Patent: September 24, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Italo Anceschi, Werner Fringeli, Martin Jollenbeck, Georges Mahler, Willy Schurings
  • Process for whitening polyester fibres by the exhaust method
    Patent number: 4283197
    Abstract: A process for whitening polyester fibres with a fluorescent whitening agent for polyester and a shading dye by the exhaust method, said process being carried out in a dispersion of the fluorescent whitening agent having a pH value above 9, preferably between 11 and 13.5.
    Type: Grant
    Filed: March 17, 1980
    Date of Patent: August 11, 1981
    Assignee: Ciba-Geigy Corporation
    Inventors: Willy Schurings, Italo Anceschi, Gerhard Reinert