Patents by Inventor Asit Kumar Ray

Asit Kumar Ray 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: 6287897
    Abstract: A method for forming a semiconductor device comprising forming a dielectric layer on an area of a silicon substrate; implanting nitrogen atoms into said dielectric layer; forming a conductive layer of polysilicon over said dielectric layer; annealing the dielectric layer to drive the nitrogen atoms to form a gate dielectric of a dielectric layer having silicon nitride layer interfaces of the dielectric layer and the silicon substrate and the polysilicon layers; and, forming a gate structure in said polysilicon layer and source/drain regions in said silicon substrate, said source/drain regions aligned with said gate structure.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: September 11, 2001
    Assignee: International Business Machines Corporation
    Inventors: Evgeni Gousev, Kai Chen, Asit Kumar Ray