Patents by Inventor Paola Puppo

Paola Puppo 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: 6348305
    Abstract: A photographic element comprising a film support base, an adhesion promoting layer, a subbing layer and at least one light-sensitive silver halide emulsion layer, wherein the adhesion promoting layer is close to the support and contains a silane compound and a polyurethane, and the subbing layer, selected within the group consisting of a hydrophilic colloidal layer or a layer comprising a continuous gelled network of inorganic particles, is positioned between the adhesion promoting layer and the emulsion layer. The present invention also refers to a photographic element comprising a film support base having coated on one side thereof at least one light-sensitive silver halide emulsion layer and on the opposite side thereof an adhesion promoting layer and at least one auxiliary layer, wherein the adhesion promoting layer is close to the support and contains a silane compound and a polyurethane.
    Type: Grant
    Filed: January 25, 2001
    Date of Patent: February 19, 2002
    Assignee: Ferrania, S.p.A.
    Inventors: Paola Puppo, Alberto Valsecchi, Carlo Barlocco
  • Patent number: 6300048
    Abstract: A photographic element comprising a film support base, an adhesion promoting layer, a subbing layer and at least one light-sensitive silver halide emulsion layer, wherein the adhesion promoting layer is close to the support and contains a self-crosslinkable vinyl addition copolymer and the subbing layer is positioned between the adhesion promoting layer and the emulsion layer. The present invention also refers to a photographic element comprising a film support base having coated on one side thereof at least one light-sensitive silver halide emulsion layer and on the opposite side thereof an adhesion promoting layer and at least one auxiliary layer, wherein the adhesion promoting layer is close to the support and contains a self-crosslinkable vinyl addition copolymer.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: October 9, 2001
    Inventors: Paola Puppo, Carlo Barlocco, Alberto Valsecchi
  • Publication number: 20010024770
    Abstract: A photographic element comprising a film support base, an adhesion promoting layer, a subbing layer and at least one light-sensitive silver halide emulsion layer, wherein the adhesion promoting layer is close to the support and contains a silane compound and a polyurethane, and the subbing layer, selected within the group consisting of a hydrophilic colloidal layer or a layer comprising a continuous gelled network of inorganic particles, is positioned between the adhesion promoting layer and the emulsion layer.
    Type: Application
    Filed: January 25, 2001
    Publication date: September 27, 2001
    Applicant: Ferrania S.p.A
    Inventors: Paola Puppo, Alberto Valsecchi, Carlo Barlocco
  • Patent number: 6261752
    Abstract: One object of the present invention is to provide a mixture composed of 1) a cellulose ether derivative esterified at least with a biprotic acid group derivative expressed by the formula HOOC—B—COOH (I), wherein B is a linear aliphatic group represented by (CH2)x with x a positive integer from 1 to 5 or is a 5-member or 6-member cycloaliphatic group and 2) a cellulose or cellulose derivative esterified at least with a phthalic acid derivative represented by the following formula (II). wherein R1 is an all group and y is a positive integer from 0 to 3. Said mixture shows an enhanced stability against hydrolysis when subjected to conditioning at high relative humidity and temperature. The composition may be useful in order to get antihalation layer on photographic films as well as enteric coating of pharmaceutical dosage and for controlled-release applications such as for cleaning formulation.
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: July 17, 2001
    Assignee: Ferrania S.p.A.
    Inventors: Paola Puppo, Alberto Valsecchi, Carlo Barlocco, Luisa Tavella
  • Patent number: 6214530
    Abstract: A base film including a substrate, an adhesion layer, a conductive layer, and a magnetic layer is provided. The adhesion layer preferably includes a sulfonated polyester/vinyl addition polymer, wherein the adhesion layer is disposed between the substrate and the conductive layer and improves adhesion between these layers, even under wet conditions. An adhesion layer is particularly useful in photographic elements and is at least located on a surface of the substrate that is opposite a silver halide emulsion layer, although emulsion receptivity can be enhanced by including an adhesion layer on the emulsion-side of the substrate.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: April 10, 2001
    Assignee: Tulalip Consultoria Comercial Sociedade Unidessoal S.A.
    Inventors: Eric D. Morrison, Paola Puppo
  • Patent number: 5914222
    Abstract: A photographic element comprising a polymeric film base, a silver halide emulsion layer, and an antistatic layer comprising a colloidal vanadium oxide and a vinyl addition polymer dispersion in a dry weight ratio of from 1:30 to 1:500. The antistatic layer may be present as a backing layer on the side of the base opposite the silver halide emulsion layer, as a subbing layer between the base and the emulsion layer in a single or double side coated photographic element, and/or as a subbing layer between the base and a different backing layer. No barrier layer is used over the antistatic layer.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: June 22, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Eric D. Morrison, Paola Puppo, Alberto Valsecchi, Elio Martino, William L. Kausch, Renzo Torterolo
  • Patent number: 5709985
    Abstract: A photographic element comprising a polymeric film base, a silver halide emulsion layer, and an antistatic layer comprising a colloidal vanadium oxide and a vinyl addition polymer dispersion in a dry weight ratio of from 1:30 to 1:500. The antistatic layer may be present as a backing layer on the side of the base opposite the silver halide emulsion layer, as a subbing layer between the base and the emulsion layer in a single or double side coated photographic element, and/or as a subbing layer between the base and a different backing layer. No barrier layer is used over the antistatic layer.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: January 20, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Eric D. Morrison, Paola Puppo, Alberto Valsecchi, Elio Martino, William L. Kausch, Renzo Torterolo
  • Patent number: 5529893
    Abstract: Light-sensitive photographic element comprising a polymeric film base, a silver halide emulsion layer, and an antistatic layer comprising a low viscosity and highly sulfonated water soluble polyacetal (preferably obtained by reaction of a low viscosity polyvinyl alcohol and a sulfonated aldehyde), a hydrophobic binder selected from the group consisting of a water dispersible sulfopolyester and a latex polymer having hydrophilic functionality, and a polyfunctional aldehyde crosslinking agent. The antistatic layer may be present as a backing layer on the side of the base opposite the silver halide emulsion layer, as a subbing layer between the base and the emulsion layer in a single or double side coated photographic element, and/or as a subbing layer between the base and a different backing layer.
    Type: Grant
    Filed: July 26, 1995
    Date of Patent: June 25, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Alberto Valsecchi, Elio Martino, Paola Puppo, Eric D. Morrison