Patents by Inventor Roberto Sardelli

Roberto Sardelli 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: 6592953
    Abstract: The present invention refers to an ink jet receiving sheet comprising a support and at least an ink receiving layer comprising a binder selected from the group consisting of gelatin and gelatin derivatives, characterized in that said at least an ink receiving layer comprises at least a copolymer consisting in at least one N-vinylpyrrolidone monomer and at least a second monomer selected from the group of N-vinylcaprolactam monomers and N-vinylpiperidone monomers to improve post printed drop sweating in the resulting image, still maintaining a good glossiness.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: July 15, 2003
    Assignee: Ferrania, S.p.A.
    Inventors: Luca Ceruti, Roberto Sardelli, Gabriele Impellizzieri
  • Patent number: 6261756
    Abstract: The present invention refers to a light-sensitive silver halide multilayer color photographic element having a support base and coated thereon blue-, green- and red-sensitive silver halide emulsion layers respectively associated with non-diffusing yellow, magenta and cyan dye-forming couplers, wherein at least one green-sensitive layer contains a 2-equivalent 3-anilino-4-phenylthio-5-pyrazolone magenta coupler and a 4-(4-hydroxy-phenylazo)-5-pyrazolone colored magenta coupler. The multilayer color photographic element of the present invention presents an improved speed and contrast, without a detrimental effect on the other sensitometric properties, such as Dmin and Dmax.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: July 17, 2001
    Assignee: Terrania, S.p.A.
    Inventors: Raffaella Biavasco, Emilio Prosperi, Roberto Sardelli
  • Patent number: 5821042
    Abstract: A multilayer silver halide color photographic element comprises a support having coated thereon a silver antihalation layer, an interlayer, at least two red-sensitive silver halide emulsion layers, at least two green-sensitive silver halide emulsion layers a yellow filter layer, and at least two blue-sensitive silver halide emulsion layers, wherein the interlayer provided between the silver antihalation layer and the red-sensitive silver halide emulsion layer closest to the support contains a bleach accelerator releasing compound, and the silver antihalation layer contains a water-soluble organic thiol.The invention provides reduction in residual silver levels and backside turbidity after processing, without deleteriously affecting sensitometric properties of the photographic element.
    Type: Grant
    Filed: May 22, 1997
    Date of Patent: October 13, 1998
    Assignee: Imation Corp.
    Inventors: Sergio Massirio, Massimo Bertoldi, Giovanni Giusto, Emilio Prosperi, Roberto Sardelli
  • Patent number: 5658717
    Abstract: Multilayer silver halide color photographic element comprising a support having thereon at least a blue sensitive silver halide emulsion layer containing a yellow dye-forming coupler, at least a green-sensitive silver halide emulsion layer containing a magenta dye-forming coupler, and at least a red-sensitive silver halide emulsion layer containing a cyan dye-forming coupler, said red-sensitive layer or a gelatin interlayer adjacent said red-sensitive layer containing a non-diffusible, non-coupling magenta colored azo dye.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: August 19, 1997
    Assignee: Imation Corp.
    Inventors: Anna Maria Canuti, Roberto Sardelli, Massimo Bertoldi
  • Patent number: 5658718
    Abstract: Multilayer silver halide color photographic element comprising a support having thereon at least a blue sensitive silver halide emulsion layer containing a yellow dye-forming coupler, at least a green-sensitive silver halide emulsion layer containing a magenta dye-forming coupler, and at least a red-sensitive silver halide emulsion layer containing a cyan dye-forming coupler, said red-sensitive layer containing a non-diffusible, cyan dye-forming magenta masking coupler.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: August 19, 1997
    Assignee: Imation Corp
    Inventors: Anna Maria Canuti, Roberto Sardelli, Massimo Bertoldi