Patents by Inventor Silvestro Fimiani

Silvestro Fimiani 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: 9865749
    Abstract: A Merged P-i-N Schottky device in which the oppositely doped diffusions extend to a depth and have been spaced apart such that the device is capable of absorbing a reverse avalanche energy comparable to a Fast Recovery Epitaxial Diode having a comparatively deeper oppositely doped diffusion region.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: January 9, 2018
    Assignee: Siliconix Technology C. V.
    Inventors: Davide Chiola, Kohji Andoh, Silvestro Fimiani
  • Patent number: 7858456
    Abstract: Merged P-i-N Schottky device in which the oppositely doped diffusions extend to a depth and have been spaced apart such that the device is capable of absorbing a reverse avalanche energy comparable to a Fast Recovery Epitaxial Diode having a comparatively deeper oppositely doped diffusion region.
    Type: Grant
    Filed: April 11, 2006
    Date of Patent: December 28, 2010
    Assignee: Siliconix Technology C. V.
    Inventors: Davide Chiola, Kohji Andoh, Silvestro Fimiani
  • Publication number: 20060189107
    Abstract: Merged P-i-N Schottky device in which the oppositely doped diffusions extend to a depth and have been spaced apart such that the device is capable of absorbing a reverse avalanche energy comparable to a Fast Recovery Epitaxial Diode having a comparatively deeper oppositely doped diffusion region.
    Type: Application
    Filed: April 11, 2006
    Publication date: August 24, 2006
    Inventors: Davide Chiola, Kohji Andoh, Silvestro Fimiani
  • Patent number: 7091572
    Abstract: A fast recovery diode has a single large area P/N junction surrounded by a termination region. The anode contact in contact with the central active area extends over the inner periphery of an oxide termination ring and an EQR metal ring extends over the outer periphery of the oxide termination ring. Platinum atoms are diffused into the back surface of the device. A three mask process is described. An amorphous silicon layer is added in a four mask process, and a plurality of spaced guard rings are added in a five mask process.
    Type: Grant
    Filed: September 23, 2005
    Date of Patent: August 15, 2006
    Assignee: International Rectifier Corporation
    Inventors: Kohji Andoh, Silvestro Fimiani, Fabrizio Rue Redda, Davide Chiola
  • Patent number: 7071525
    Abstract: A Merged P-i-N Schottky device in which the oppositely doped diffusions extend to a depth and have been spaced apart such that the device is capable of absorbing a reverse avalanche energy comparable to a Fast Recovery Epitaxial Diode having a comparatively deeper oppositely doped diffusion region.
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: July 4, 2006
    Assignee: International Rectifier Corporation
    Inventors: Davide Chiola, Kohji Andoh, Silvestro Fimiani
  • Publication number: 20060017130
    Abstract: A fast recovery diode has a single large area P/N junction surrounded by a termination region. The anode contact in contact with the central active area extends over the inner periphery of an oxide termination ring and an EQR metal ring extends over the outer periphery of the oxide termination ring. Platinum atoms are diffused into the back surface of the device. A three mask process is described. An amorphous silicon layer is added in a four mask process, and a plurality of spaced guard rings are added in a five mask process.
    Type: Application
    Filed: September 23, 2005
    Publication date: January 26, 2006
    Inventors: Kohji Andoh, Silvestro Fimiani, Fabrizio Rue Redda, Davide Chiola
  • Patent number: 6927141
    Abstract: A fast recovery diode has a single large area P/N junction surrounded by a termination region. The anode contact in contact with the central active area extends over the inner periphery of an oxide termination ring and an EQR metal ring extends over the outer periphery of the oxide termination ring. Platinum atoms are diffused into the back surface of the device. A three mask process is described. An amorphous silicon layer is added in a four mask process, and a plurality of spaced guard rings are added in a five mask process.
    Type: Grant
    Filed: August 18, 2003
    Date of Patent: August 9, 2005
    Assignee: International Rectifier Corporation
    Inventors: Kohji Andoh, Silvestro Fimiani, Fabrizio Ruo Redda, Davide Chiola
  • Publication number: 20050161759
    Abstract: A Merged P-i-N Schottky device in which the oppositely doped diffusions extend to a depth and have been spaced apart such that the device is capable of absorbing a reverse avalanche energy comparable to a Fast Recovery Epitaxial Diode having a comparatively deeper oppositely doped diffusion region.
    Type: Application
    Filed: January 27, 2004
    Publication date: July 28, 2005
    Inventors: Davide Chiola, Kohji Andoh, Silvestro Fimiani
  • Publication number: 20040077305
    Abstract: A fast recovery diode has a single large area P/N junction surrounded by a termination region. The anode contact in contact with the central active area extends over the inner periphery of an oxide termination ring and an EQR metal ring extends over the outer periphery of the oxide termination ring. Platinum atoms are diffused into the back surface of the device. A three mask process is described. An amorphous silicon layer is added in a four mask process, and a plurality of spaced guard rings are added in a five mask process.
    Type: Application
    Filed: August 18, 2003
    Publication date: April 22, 2004
    Applicant: International Rectifier Corporation
    Inventors: Kohji Andoh, Silvestro Fimiani, Fabrizio Ruo Redda, Davide Chiola
  • Publication number: 20020195613
    Abstract: A fast recovery diode has a single large area P/N junction surrounded by a termination region. The anode contact in contact with the central active area extends over the inner periphery of an oxide termination ring and an EQR metal ring extends over the outer periphery of the oxide termination ring. Platinum atoms are diffused into the back surface of the device. A three mask process is described. An amorphous silicon layer is added in a four mask process, and a plurality of spaced guard rings are added in a five mask process.
    Type: Application
    Filed: April 2, 2002
    Publication date: December 26, 2002
    Applicant: International Rectifier Corp.
    Inventors: Kohji Andoh, Silvestro Fimiani, Fabrizio Rue Redda, Davide Chiola
  • Patent number: 5736778
    Abstract: A high power resistor is formed of a wafer of silicon captured between two molybdenum electrodes. A P-I-N diode of ring shape or wafer shape is concentric with a silicon resistor and has surfaces which are coplanar with the silicon resistor to form a device having an integrated diode and resistor.
    Type: Grant
    Filed: November 15, 1996
    Date of Patent: April 7, 1998
    Assignee: International Rectifier Corporation
    Inventors: Bruno Passerini, Silvestro Fimiani
  • Patent number: 5436473
    Abstract: The gate lead for a center gate thyristor consists of a contact disk connected to the end of an elongated flexible conductive lead wire which is insulated over its major length. The lead is threaded through the central opening in a plunger which is received in a central opening in the pole piece and terminates in a contact disk which is captured against the bottom of the plunger. A compression spring is captured between the other end of the cylinder and the plunger, thereby to press the contact disk into high pressure contact with the gate electrode on the junction when the device is assembled. The opposite end of the gate lead wire is connected to a terminal which can be easily connected to the interior end of the gate pin which extends through the insulation housing of the assembly.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: July 25, 1995
    Assignee: International Rectifier Corporation
    Inventors: Bruno Passerini, Claudio Malfatto, Silvestro Fimiani