Patents by Inventor Angelo Bolli

Angelo Bolli 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).

  • Heat-sensitive composition in which removal of the unexposed regions is unnecessary, negative lithographic plate coated with the said composition and method for forming a negative image on the said plate
    Patent number: 7144681
    Abstract: A heat-sensitive composition which forms an image without the removal of material, which does not require any developing treatment after the stage of exposure to heat and comprises: (a) a switchable polymer, (b) an IR absorber, (c) a triazine compound, and (d) a novolak resin. Negative lithographic plate comprising a substrate coated with the said composition. A method for obtaining a negative image on a substrate coated with a composition which is first hydrophobic and then lipophilic after exposure to heat, without the removal of material, the said negative image being obtained by applying a small quantity of energy to the said composition.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: December 5, 2006
    Assignee: Lastra S.p.A.
    Inventors: Angelo Bolli, Andrea Tettamanti
  • Heat-sensitive composition in which removal of the unexposed regions is unnecessary, negative lithographic plate coated with the said composition and method for forming a negative image on the said plate
    Patent number: 7060412
    Abstract: A heat-sensitive composition which forms an image without the removal of material, which does not require any developing treatment after the stage of exposure to heat and comprises: (a) a switchable polymer, (b) an IR absorber, (c) a triazine compound, and (d) a novolak resin. Negative lithographic plate comprising a substrate coated with the said composition. A method for obtaining a negative image on a substrate coated with a composition which is first hydrophilic and then lipophilic after exposure to heat, without the removal of material, the said negative image being obtained by applying a small quantity of energy to the said composition.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: June 13, 2006
    Assignee: LASTRA S.p.A.
    Inventors: Angelo Bolli, Andrea Tettamanti
  • Heat-sensitive composition in which removal of the unexposed regions is unnecessary, negative lithographic plate coated with the said composition and method for forming a negative image on the said plate
    Publication number: 20050238995
    Abstract: A heat-sensitive composition which forms an image without the removal of material, which does not require any developing treatment after the stage of exposure to heat and comprises: (a) a switchable polymer, (b) an IR absorber, (c) a triazine compound, and (d) a novolak resin. Negative lithographic plate comprising a substrate coated with the said composition. A method for obtaining a negative image on a substrate coated with a composition which is first hydrophilic and then lipophilic after exposure to heat, without the removal of material, the said negative image being obtained by applying a small quantity of energy to the said composition.
    Type: Application
    Filed: June 9, 2005
    Publication date: October 27, 2005
    Inventors: Angelo Bolli, Andrea Tettamanti
  • Heat-sensitive composition in which removal of the unexposed regions is unnecessary, negative lithographic plate coated with the said composition and method for forming a negative image on the said plate
    Publication number: 20040063028
    Abstract: A heat-sensitive composition which forms an image without the removal of material, which does not require any developing treatment after the stage of exposure to heat and comprises: (a) a switchable polymer, (b) an IR absorber, (c) a triazine compound, and (d) a novolak resin.
    Type: Application
    Filed: June 27, 2003
    Publication date: April 1, 2004
    Inventors: Angelo Bolli, Andrea Tettamanti
  • Composition sensitive to IR radiation and to heat and lithographic plate coated therewith
    Patent number: 6620572
    Abstract: A heat-sensitive composition of the positive type comprising a polymeric binder and a solubility inhibitor, wherein the said solubility inhibitor consists of an organometallic compound, with the exclusion of the metallocenes, an organic salt or an organic complex of an inorganic salt of a metal belonging to the group IIIA or transition group of the periodic system of the elements.
    Type: Grant
    Filed: July 28, 2000
    Date of Patent: September 16, 2003
    Assignee: Lastra S.p.A.
    Inventors: Roberto Bernardini, Domenico Tiefenthaler, Angelo Bolli
  • Composition sensitive to IR radiation and to heat and lithographic plate coated with this composition
    Patent number: 6500600
    Abstract: A heat-sensitive composition of the positive type comprising a polymeric binder and a solubility inhibitor, wherein the said solubility inhibitor is a hydroxylated acrylic polymer, a hydroxylated acrylic copolymer or of a derivative thereof wherein some hydroxyl groups have been esterified by a carboxylic acid or a reactive derivative thereof.
    Type: Grant
    Filed: July 28, 2000
    Date of Patent: December 31, 2002
    Assignee: Lastra S.p.A.
    Inventors: Roberto Bernardini, Domenico Tiefenthaler, Angelo Bolli
  • IR- and UV-radiation-sensitive composition and lithographic plate
    Patent number: 6376150
    Abstract: An IR- and UV-radiation-sensitive composition comprising a diazo resin, a diazo ester, at least one novolac resin and an IR-ray absorber. A lithographic plate comprising a support coated with the said photosensitive composition.
    Type: Grant
    Filed: May 11, 1999
    Date of Patent: April 23, 2002
    Assignee: Lastra S.p.A.
    Inventors: Angelo Bolli, Paolo Peveri, Andrea Tettamanti