Patents by Inventor Holly A. LaFerrara

Holly A. LaFerrara 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 providing rotationally symmetric alignment marks for an alignment system that requires asymmetric geometric layout
    Patent number: 8039366
    Abstract: A method and apparatus includes an integrated circuit device, and at least one alignment mark on the integrated circuit device, the alignment mark comprises a first coded region, a second coded region adjacent the first coded region, and a third coded region adjacent the second coded region, the second coded region located between the first coded region and the third coded region, and markings on the first coded region and the third coded region being identical.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: October 18, 2011
    Assignee: International Business Machines Corporation
    Inventors: Karen L. Holloway, Holly LaFerrara, Alexander L. Martin, Martin E. Powell, Timothy J. Wiltshire, Roger J. Yerdon
  • METHOD FOR PROVIDING ROTATIONALLY SYMMETRIC ALIGNMENT MARKS FOR AN ALIGNMENT SYSTEM THAT REQUIRES ASYMMETRIC GEOMETRIC LAYOUT
    Publication number: 20100207284
    Abstract: A method and apparatus includes an integrated circuit device, and at least one alignment mark on the integrated circuit device, the alignment mark comprises a first coded region, a second coded region adjacent the first coded region, and a third coded region adjacent the second coded region, the second coded region located between the first coded region and the third coded region, and markings on the first coded region and the third coded region being identical.
    Type: Application
    Filed: February 19, 2009
    Publication date: August 19, 2010
    Applicant: International Business Machines Corporation
    Inventors: Karen L. Holloway, Holly LaFerrara, Alexander L. Martin, Martin E. Powell, Timothy J. Wiltshire, Roger J. Yerdon
  • Variable gain RF amplifier with switchable bias injection and feedback
    Patent number: 6104246
    Abstract: A RF integrated circuit including an amplifier having an input node and an output node; a switchable feedback path coupled between the output node and input node; and a switchable bias injector coupled to the input node. When the switchable feedback path is off and the switchable bias injector is on, the amplifier is in a high gain state. When the switchable feedback path is on and the switchable bias injector is off, the amplifier is in a low gain state. The circuit may be used in up converters and down converters for CDMA systems.
    Type: Grant
    Filed: May 25, 1999
    Date of Patent: August 15, 2000
    Assignee: International Business Machines Corporation
    Inventors: Holly A. LaFerrara, Nathaniel King
  • Floating fet mixer
    Patent number: 5697092
    Abstract: A floating FET mixer (1) comprises: a field effect transistor, FET, (2) having a gate (11), a drain terminal (4) and a source terminal (5), an LO port (10) at which an LO signal from a local oscillator is coupled to the gate (11), primary windings (9) of a balun (3) across the drain terminal (4) and the source terminal (5), secondary windings (8) of the balun (3) coupled at its opposite ends to ground and an RF port (7), respectively, a center tap (12) on the primary windings (9), and a series biasing element (20) on the gate (11) biasing the FET (2) near pinch off.
    Type: Grant
    Filed: July 8, 1996
    Date of Patent: December 9, 1997
    Assignee: The Whitaker Corporation
    Inventors: Jean-Marc Mourant, Holly A. LaFerrara