Patents by Inventor Ferdinando Orengo

Ferdinando Orengo 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).

  • Patent number: 6020115
    Abstract: Multilayer color photographic element having on a support base blue-, green- and red-sensitive silver halide emulsion layers respectively associated with non-diffusing yellow, magenta and cyan dye-forming couplers, wherein (a) the green-sensitive silver halide emulsion layer comprises three green-sensitive silver halide emulsion layers, respectively uppermost, intermediate and lowermost, sensitive to the same spectral region of visible light, in which the sensitivity of the three green-sensitive silver halide emulsion layers decreases in order from the uppermost silver halide emulsion layer to the lowermost silver halide emulsion layer, (b) each of the three green-sensitive silver halide emulsion layers contains an 1-phenyl-3-anilino-4-phenylthio-5-pyrazolone magenta dye-forming coupler, (c) the weight ratio of the coupler to silver halide (expressed as silver) in the highest sensitivity uppermost green-sensitive silver halide emulsion layer is higher than the weight ratio of the coupler to silver halide (exp
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: February 1, 2000
    Assignee: Tulalip Consultoria Comercial Sociedade Unipessoal
    Inventors: Ferdinando Orengo, Luisa Tavella, Antonio Poggi
  • Patent number: 5663040
    Abstract: Silver halide photographic element comprising a support and at least one silver halide emulsion layer having therein a 2-equivalent 5-pyrazolone magenta coupler represented by the formula: ##STR1## wherein a represents an integer from 0 to 3,b represents an integer from 0 to 2,R.sub.1 and R.sub.2 are each individually hydrogen, alkyl, alkoxy, halogen, aryl, aryloxy, acylamino, sulfonamido, sulfamoyl, carbamoyl, arylsulfonyl, aryloxycarbonyl, alkoxycarbonyl, alkoxysulfonyl, aryloxysulfonyl, alkylureido, arylureido, nitro, cyano, hydroxyl or carboxy group,R.sub.3 is halogen atom, alkyl or aryl group,X is a direct link or a linking group,Ball is a ballasting group which renders a group to which is attached non-diffusible in photographic coatings, andthe sum of the sigma values of R.sub.1, R.sub.3 and X-Ball is less than 1.3.
    Type: Grant
    Filed: February 22, 1996
    Date of Patent: September 2, 1997
    Assignee: Imation Corp
    Inventors: Massimo Bertoldi, Enzo Coraluppi, Anna Marie Canuti, Ferdinando Orengo