Patents by Inventor Paolo Salvarani

Paolo Salvarani 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).

  • Optical film comprising polyarylates containing bis-(hydroxyphenyl)-fluorene-ortho-disubstituted bisphenols
    Patent number: 7022772
    Abstract: The present invention refers to a polymeric optical film the polymer of the polymeric optical film consisting essentially of one or more polyarylates having repeating units represented by the general structure: wherein A represents one or more different bisphenolfluorene radicals having the general formula (I): wherein R1 and R2 independently represent an alkyl group, a halogen atom, an alkoxy group, an acyl group, a phenyl group or a nitrile group, with the proviso that R1 and R2 are not both an alkyl group; R3, R4, R5 and R6 represent a hydrogen atom, an alkyl group, a halogen, an alkoxy group, an acyl group, a phenyl group, a nitro group, or a nitrile group, with the proviso that when R1 and R2 are both bromide atoms, at least one of R3, R4, R5 and R6 is different from hydrogen atom; B represents one or more different dicarboxy radicals having the formula: wherein X is a divalent aromatic hydrocarbon group having from 6 to 20 carbon atoms, and n is the number of the repeating units which build
    Type: Grant
    Filed: August 18, 2003
    Date of Patent: April 4, 2006
    Assignee: Ferraria Technologies S.p.A.
    Inventors: Simone Angiolini, Mauro Avidano, Paolo Salvarani, Roberto Bracco
  • Optical film comprising polyarylates containing bis-(hydroxyphenyl)-fluorene-ortho-disubstituted bisphenols
    Publication number: 20040192848
    Abstract: The present invention refers to a polymeric optical film the polymer of the polymeric optical film consisting essentially of one or more polyarylates having repeating units represented by the general structure: 1
    Type: Application
    Filed: August 18, 2003
    Publication date: September 30, 2004
    Applicant: Ferrania, S.p.A
    Inventors: Simone Angiolini, Mauro Avidano, Paolo Salvarani, Roberto Bracco
  • Optical film comprising polyarylates containing bis-(hydroxyphenyl)-fluorene-ortho-disubstituted bisphenols
    Patent number: 6632886
    Abstract: The present invention refers to an optical film comprising one or more polyarylates having at least some units represented by the general structure: wherein A represents one or more different bisphenolfluorene radicals having the general formula (I):  wherein R1 and R2 independently represent an alkyl group, a halogen, an alkoxy group, an acyl group, a phenyl group or a nitrile group, with the proviso that R1 and R2 are not both an alkyl group; R3, R4, R5 and R6 represent a hydrogen atom, an alkyl group, a halogen, an alkoxy group, an acyl group, a phenyl group, a nitro group, or a nitrile group; B represents one or more different dicarboxy radicals having the formula:  wherein X is a divalent hydrocarbon group having from 1 to 20 carbon atoms, and n is the number of the repeating units which build up the polymer and is a positive integer higher than 20.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: October 14, 2003
    Assignee: Ferrania, S.p.A.
    Inventors: Simone Angiolini, Mauro Avidano, Paolo Salvarani, Roberto Bracco
  • Optical film comprising polyarylates containing bis-(hydroxyphenyl)-fluorene-ortho-disubstituted bisphenols
    Publication number: 20020091200
    Abstract: The present invention refers to an optical film comprising one or more polyarylates having at least some units represented by the general structure: 1
    Type: Application
    Filed: April 10, 2001
    Publication date: July 11, 2002
    Applicant: FERRANIA S.p.A.
    Inventors: Simone Angiolini, Mauro Avidano, Paolo Salvarani, Roberto Bracco