Patents by Inventor Emmanuel Crabbe

Emmanuel Crabbe 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 of making graded channel effect transistor
    Patent number: 6004137
    Abstract: A MISFET having a graded semiconductor alloy channel layer of silicon germanium in which the germanium is graded to a single peak percentage level. The single peak percentage level defines the location of the charge carriers within the layer. The transconductance of the device can be optimized by controlling the location of the carriers within the channel.
    Type: Grant
    Filed: September 23, 1993
    Date of Patent: December 21, 1999
    Assignee: International Business Machines Corporation
    Inventors: Emmanuel Crabbe, Bernard Steele Meyerson, Johannes Maria Cornelis Stork, Sophie Verdonckt-Vandebroek
  • Graded channel field effect transistor
    Patent number: 5821577
    Abstract: A MISFET having a graded semiconductor alloy channel layer of silicon germanium in which the germanium is graded to a single peak percentage level. The single peak percentage level defines the location of the charge carriers within the layer. The transconductance of the device can be optimized by controlling the location of the carriers within the channel.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: October 13, 1998
    Assignee: International Business Machines Corporation
    Inventors: Emmanuel Crabbe', Bernard Steele Meyerson, Johannes Maria Cornelis Stork, Sophie Verdonckt-Vandebroek
  • Graded channel field effect transistor
    Patent number: 5777364
    Abstract: A MISFET having a graded semiconductor alloy channel layer of silicon germanium in which the germanium is graded to a single peak percentage level. The single peak percentage level defines the location of the charge carriers within the layer. The transconductance of the device can be optimized by controlling the location of the carriers within the channel.
    Type: Grant
    Filed: May 2, 1997
    Date of Patent: July 7, 1998
    Assignee: International Business Machines Corporation
    Inventors: Emmanuel Crabbe, Bernard Steele Meyerson, Johannes Maria Cornelis Stork, Sophie Verdonckt-Vandebroek