Patents by Inventor Piero Cavalleri

Piero Cavalleri 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: 6518005
    Abstract: The present invention refers to photographic elements having, coated on a support base, at least one silver halide emulsion layer sensitized to a radiation different from the blue one in addition to its intrinsic sensitivity to the blue region, and a yellow filter layer positioned between said at least one silver halide emulsion layer and the exposure source, where such yellow filter layer contains a yellow filtering dye represented by the formula (1): wherein R and R1 each independently represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkylene group, a substituted or unsubstituted heterocyclic group or a substituted or unsubstituted aryl group; R2, R3 and R4 each independently represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group and R3 and R4 may be combined to form a 6-membered ring.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: February 11, 2003
    Assignee: Ferrania, S.p.A.
    Inventors: Piero Cavalleri, Raffaella Biavasco, Stefano Parodi
  • Publication number: 20020031735
    Abstract: The present invention refers to photographic elements having, coated on a support base, at least one silver halide emulsion layer sensitized to a radiation different from the blue one in addition to its intrinsic sensitivity to the blue region, and a yellow filter layer positioned between said at least one silver halide emulsion layer and the exposure source, where such yellow filter layer contains a yellow filtering dye represented by the formula (1): 1
    Type: Application
    Filed: June 8, 2001
    Publication date: March 14, 2002
    Applicant: Ferrania, S.P.A.,
    Inventors: Piero Cavalleri, Raffaella Biavasco, Stefano Parodi
  • Patent number: 6300047
    Abstract: The present invention relates to a support base for light-sensitive photographic elements. In particular, the present invention relates to a support base comprising a support having coated thereon at least two antihalation layers overcoated by a protective layer. The support base for light-sensitive photographic elements of the present invention presents an improved coating quality with a reduced formation of mottle, defined as an irregularly patterned defect due to the tendency of the coated layers to reproduce any deformation present on the support.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: October 9, 2001
    Inventors: Wilma Massucco, Domenico Marinelli, Piero Cavalleri
  • Patent number: 6045985
    Abstract: Photographic elements are disclosed having on a support a silver halide emulsion layer sensitive to radiation other than blue light in addition to its intrinsic sensitivity to blue region, and a yellow filter layer between the silver halide emulsion layers and the source of exposure, the yellow filter layer containing a yellow filter dye represented by the structural formula: ##STR1## wherein: R is hydrogen, alkyl group or aryl group;R.sub.1 is aryl group or heterocyclic group;X is O or N--R.sub.2 where R.sub.2 is hydrogen or alkyl group;Y is N--R.sub.3 where R.sub.3 is hydrogen or alkyl group;n is 0 or 1;Z is hydrogen, alkyl group or aryl group;W is hydrogen, or W and Z, taken together, represent the atoms necessary to form an aryl group.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: April 4, 2000
    Assignee: Tulalip Consultoria Comercial Sociedade Unipessoal S.A.
    Inventors: Piero Cavalleri, Sergio Massirio