Patents by Inventor Alberto Valsecchi

Alberto Valsecchi 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).

  • Publication number: 20190276705
    Abstract: The present invention relates to novel (per)fluoropolyether (PFPE) polymer derivatives, a method for their manufacture and their use for providing an anti-soiling coating.
    Type: Application
    Filed: May 11, 2017
    Publication date: September 12, 2019
    Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.p.A.
    Inventors: Roberto VALSECCHI, Simonetta, Antonella FONTANA, Fabrizio MUTTA, Alberto ZOMPATORI
  • 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: 6063556
    Abstract: A silver halide radiographic element comprising a polymeric film base, at least one silver halide emulsion layer, and at least one antistatic layer adhered to at least one side of said polymeric film base, wherein (1) said silver halide emulsion layer comprises tabular silver halide grains having an average diameter to thickness ratio of at least 3:1, and (2) said antistatic layer comprises a colloidal vanadium oxide and a sulfopolyester.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: May 16, 2000
    Assignee: Minnesota Mining and Manufacturing Co.
    Inventors: Alberto Valsecchi, Renzo Torterolo
  • 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: 5604083
    Abstract: The invention is directed to an antistatic polymeric film base comprising a polymeric film having coated on at least one side thereof an antistatic layer comprising the reaction product of (1) a water-soluble, electrically conductive polymer containing carboxylic groups and (2) a water-soluble polymer containing oxazoline groups, and to a photographic element comprising at least one silver halide emulsion layer on said antistatic polymeric film base. This antistatic layer may be present as a backing layer on the side of the film base opposite the silver halide emulsion layer, as a subbing layer between the film base and the emulsion layer in a single or double side coated photographic element, and/or as a subbing layer between the film base and a different backing layer.
    Type: Grant
    Filed: December 5, 1995
    Date of Patent: February 18, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Alberto Valsecchi, Giorgio Spazzapan, Renzo Torterolo, Soonkun Kang
  • 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
  • Patent number: 5484693
    Abstract: Polymeric film bases at least one side of which is coated with an antistatic layer comprising the reaction product of (a) a water-soluble, electrically conductive polymer containing carboxylic groups and (b) a polyfunctional epoxide crosslinking agent, and photographic elements comprising said film bases, wherein said conductive polymer is a copolymer of a water soluble salt of styrene sulfonic acid and maleic acid having a weight average molecular weight of 100,000 to 350,000 and a water soluble salt of styrene sulfonic acid to maleic acid molar ratio of at least 2:1 up to 9:1.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: January 16, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Alberto Valsecchi, Omar Farooq
  • Patent number: 5439785
    Abstract: Light-sensitive photographic element comprising a polymeric film base, a silver halide emulsion layer, and an antistatic layer comprising a colloidal vanadium oxide and a sulfopolyester. 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 19, 1994
    Date of Patent: August 8, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: David R. Boston, William L. Kausch, Elio Martino, Eric D. Morrison, Alberto Valsecchi
  • Patent number: 4914018
    Abstract: An improved antistatic base comprises a polymeric support film having coated thereon in sequence a first antistatic layer comprising a quaternary polyelectrolyte compound and a polymeric hydrophobic binder and a second protective layer comprising a polymeric hydrophobic binder, wherein said quaternary polyelectrolyte compound is a homopolymer or a copolymer of a diallyldialkylammonium salt compound.The antistatic base is particularly useful as a support for light-sensitive silver halide photographic elements.
    Type: Grant
    Filed: December 1, 1988
    Date of Patent: April 3, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Mauro Besio, Alberto Valsecchi
  • Patent number: 4582782
    Abstract: A photographic base is protected against the adverse effects resulting from the accumulation of static electrical charges by providing it with a first antistatic hydrophilic layer and a second protective hydrophobic layer coated onto said first layer, said first layer having been formed by coating onto said base a liquid coating composition comprising a hydrophilic non-diffusing sulfonated polymer in the presence of an epoxy-silane compound. The antistatic base is particularly useful for photographic elements comprising at least one photosensitive image-forming layer, on one side thereof, and the first antistatic layer and the second protective layer on the opposite side thereof. The antistatic layer is durable, abrasion-resistant, non-tacky and can withstand the aqueous photographic processings without adverse effects.
    Type: Grant
    Filed: June 8, 1984
    Date of Patent: April 15, 1986
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Alberto Valsecchi
  • Patent number: 4424273
    Abstract: The present invention relates to an improved photographic polyester support base coated with a first hydrophobic subbing layer and a second hydrophilic subbing layer, the improvement consisting of having said second subbing layer derived from a hardener containing, aqueous coating composition including (1) gelatin, (2) a vinyl addition polymer compound and (3) a low viscosity highly sulfonated water soluble polyacetal compound derived from the reaction of an aldehyde sulfonic acid compound with a polyvinyl alcohol compound, the relative quantities of said gelatin and vinyl addition polymer compound to the polyacetal compound being such as to provide good adhesion characteristics without any significant loss in antistatic properties.
    Type: Grant
    Filed: May 17, 1982
    Date of Patent: January 3, 1984
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Simone Franco, Alberto Valsecchi
  • Patent number: 4262088
    Abstract: A photographic material containing a removable antihalo layer comprising an antihalo agent and a mixture of two copolymers of a low alkymethacrylate and acrylic or methacrylic acid.
    Type: Grant
    Filed: September 20, 1979
    Date of Patent: April 14, 1981
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Angelo Vallarino, Alberto Valsecchi