Patents by Inventor Giovanni Fontana

Giovanni Fontana 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).

  • METHOD FOR KEY DIVERSIFICATION ON AN IC CARD
    Publication number: 20080008315
    Abstract: Key diversification is performed during a mutual authentication between a SAM integrated circuit (IC) card storing a master key, and a user IC card storing an identification number. The user IC card is connected to the SAM IC card through a communications interface. The key diversification includes deriving sub keys from the master key, and computing ciphered strings through corresponding cryptographic computations on a string obtained by an elaboration on the identification number with the sub keys. A diversification key is generated by linking together a combination of bytes of the ciphered strings.
    Type: Application
    Filed: June 29, 2007
    Publication date: January 10, 2008
    Applicant: INCARD S.A.
    Inventors: Giovanni Fontana, Saverio Donatiello
  • Method for Session Key Derivation in an IC Card
    Publication number: 20080008322
    Abstract: A key session derivation is provided during a mutual authentication between a master IC card storing a master key, and a user IC card storing a key-seed. The master IC card and the user IC card are connected through a communication interface for a communication session. A first random number associated to the user IC card is generated. First and second sub keys are derived from the key-seed. First and second session sub keys are respectively derived through the first sub key in combination with the first random number, and through the second sub key in combination with the first random number. The first and second session sub keys are joined in at least a session key for the communication session.
    Type: Application
    Filed: June 28, 2007
    Publication date: January 10, 2008
    Applicant: INCARD S.A.
    Inventors: Giovanni Fontana, Saverio Donatiello
  • Process for preparing hydrofluoroethers
    Patent number: 7141704
    Abstract: Process for obtaining hydrofluoroethers of formula (I): A-(Rf)n0—CF(Rf1)—O—Rh??(I) wherein a mono- or bifunctional carbonyl compound of formula (IV): B—Rf—C(O)Rf1??(IV) is reacted with at least one equivalent of a fluoroformate of formula (III) R—OC(O)F??(III) in the presence of an ion fluoride compound (catalyst) and of a dipolar aprotic organic compound, liquid and inert under the reaction conditions.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: November 28, 2006
    Assignee: Solvay Solexis S.P.A.
    Inventors: Walter Navarrini, Marco Galimberti, Giovanni Fontana
  • Polyhalogenated ethers
    Patent number: 6936722
    Abstract: (Per)haloethers having formula: X—(Rf)L—O—CF2CF2—O—CX1X2—CFX3X4??(I), process for obtaining them and hypofluorites usable in the synthesis of said (per)haloethers.
    Type: Grant
    Filed: February 4, 2003
    Date of Patent: August 30, 2005
    Assignee: Solvay Solexis S.p.A.
    Inventors: Giovanni Fontana, Walter Navarrini
  • Polyhalogenated ethers
    Publication number: 20050148783
    Abstract: (Per)haloethers having formula: X-(Rf)L-O—CF2CF2—O—CX1X2—CFX3X4 ??(I), process for obtaining them and hypofluorites usable in the synthesis of said (per)haloethers.
    Type: Application
    Filed: March 8, 2005
    Publication date: July 7, 2005
    Inventors: Giovanni Fontana, Walter Navarrini
  • Process for preparing hydrofluoroethers
    Publication number: 20040192974
    Abstract: Process for obtaining hydrofluoroethers of formula (I):
    Type: Application
    Filed: March 26, 2004
    Publication date: September 30, 2004
    Applicant: Solvay Solexis S.p.A.
    Inventors: Walter Navarrini, Marco Galimberti, Giovanni Fontana
  • Process for the preparation of (per) fluorinated mono-functional carbonyl compounds
    Publication number: 20040147780
    Abstract: A process for the synthesis of (per)fluorinated mono-functional carbonyl compounds having the following formula:
    Type: Application
    Filed: January 9, 2004
    Publication date: July 29, 2004
    Applicant: SOLVAY SOLEXIS S.p.A
    Inventors: Giovanni Fontana, Walter Navarrini
  • Process for the preparation of (per)fluorinated mono-functional carbonyl compounds
    Publication number: 20040147778
    Abstract: A process for the synthesis of (per)fluorinated mono-functional carbonyl compounds having the following formula (I):
    Type: Application
    Filed: January 9, 2004
    Publication date: July 29, 2004
    Applicant: SOLVAY SOLEXIS S.p.A.
    Inventors: Giovanni Fontana, Walter Navarrini
  • (Per) haloethers
    Publication number: 20030187280
    Abstract: (Per)haloethers having formula:
    Type: Application
    Filed: February 4, 2003
    Publication date: October 2, 2003
    Applicant: Solvay Solexis S.p.A.
    Inventors: Giovanni Fontana, Walter Navarrini