Patents by Inventor Fernando J. Guarin

Fernando J. Guarin 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: 8159814
    Abstract: Embodiments of the present invention provide a semiconductor device that includes a transistor device having a first, a second, and a third node; and an interconnect structure having at least one wire and the wire having a first and a second end with the first end of the wire being connected to one of the first, the second, and the third node of the transistor device. The wire is conductive and adapted to provide an operating current in a first direction during a normal operating mode, and adapted to provide a repairing current in a second direction opposite to the first direction during a repair mode of the semiconductor device. In one embodiment the transistor device is a bipolar transistor with the first, second, and third nodes being an emitter, a base, and a collector of the bipolar transistor. The wire is connected to one of the emitter and the collector. Method of operating the semiconductor device and current supplying circuit for the semiconductor device are also disclosed.
    Type: Grant
    Filed: January 19, 2009
    Date of Patent: April 17, 2012
    Assignee: International Business Machines Corporation
    Inventors: Ping-Chuan Wang, Zhijian Yang, Fernando J. Guarin, J. Edwin Hostetter, Kai D Feng
  • Publication number: 20100182729
    Abstract: Embodiments of the present invention provide a semiconductor device that includes a transistor device having a first, a second, and a third node; and an interconnect structure having at least one wire and the wire having a first and a second end with the first end of the wire being connected to one of the first, the second, and the third node of the transistor device. The wire is conductive and adapted to provide an operating current in a first direction during a normal operating mode, and adapted to provide a repairing current in a second direction opposite to the first direction during a repair mode of the semiconductor device. In one embodiment the transistor device is a bipolar transistor with the first, second, and third nodes being an emitter, a base, and a collector of the bipolar transistor. The wire is connected to one of the emitter and the collector. Method of operating the semiconductor device and current supplying circuit for the semiconductor device are also disclosed.
    Type: Application
    Filed: January 19, 2009
    Publication date: July 22, 2010
    Applicant: International Business Machines Corporation
    Inventors: Ping-Chuan Wang, Zhijian Yang, Fernando J. Guarin, J. Edwin Hostetter, Kai D. Feng
  • Patent number: 6958621
    Abstract: A recovery circuit and a method for employing the same are provided. The recovery circuit has a current driver and, preferably two pass-gates, a first pass-gate connected in series to the current driver and a second pass-gate connected to a ground. The recovery circuit also has a recovery assembly or element and one or more contacts operatively connecting the recovery circuit to a wearout sensitive circuit or circuit element.
    Type: Grant
    Filed: December 2, 2003
    Date of Patent: October 25, 2005
    Assignee: International Business Machines Corporation
    Inventors: Giuseppe La Rosa, Joseph M. Lukaitis, Anastasios A. Katsetos, Stewart E. Rauch, III, Ping-Chuan Wang, Stephen P. Boffoli, Fernando J. Guarin, B. B. (Bob) Lawhorn
  • Patent number: 6521469
    Abstract: A process for in-line testing of a metal-oxide-semiconductor field effect transistor (MOSFET) device for negative bias thermal instability (NBTI), which degrades the gate oxide of the MOSFET device. The process generally comprises four steps. First, a hole injection method is selected that produces approximately the same gate oxide degradation as the NBTI under test. Second, a correlation is established between the NBTI degradation and device shifts due to the selected hole injection degradation method. Third, an in-line procedure is developed based on the hole injection method, using the second step to relate the measured shift to NBTI. Finally, a NBTI specification is defined based on the hole injection method using the second step. The MOSFET device is preferably a p-type MOSFET device and the hole injection method is preferably a channel hot-carrier stress method.
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: February 18, 2003
    Assignee: International Business Machines Corporation
    Inventors: Giuseppe La Rosa, Fernando J. Guarin, Stewart E. Rauch, III
  • Patent number: 6456104
    Abstract: A MOSFET test structure and associated electronics for rapidly heating the MOSFET gate oxide and for applying a stress voltage to the gate. The structure has at least one polysilicon gate with two spaced contacts that permit a heating current to flow through the gate thus rapidly raising the gate temperature to a desired level. External electronics permit applying a measured stress voltage to the gate. The structure is particularly useful in NBTI testing of p-MOSFETs.
    Type: Grant
    Filed: August 18, 1999
    Date of Patent: September 24, 2002
    Assignee: International Business Machines Corporation
    Inventors: Fernando J. Guarin, Anastasios A. Katsetos, Stewart E. Rauch, III
  • Patent number: 5563428
    Abstract: A structure is fabricated comprising a substrate, a dielectric layer formed over the substrate, and a single crystal layer of a compound formed over the dielectric layer. The single crystal layer is formed by the chemical reaction of at least a first element with an initial single crystal layer of a second element on the dielectric layer having an initial thickness of about 100 to about 10,000 angstroms.According to another aspect, a carbide single crystal layer is provided on a substrate by depositing carbon from a solid carbon source at a low rate and low temperature, followed by reacting the carbon with the underlying layer to convert it to the carbide.
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: October 8, 1996
    Inventors: Bruce A. Ek, Stephen M. Gates, Fernando J. Guarin, Subramanian S. Iyer, Adrian R. Powell