Patents by Inventor Mario Stella

Mario Stella 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: 6939207
    Abstract: A method and apparatus for pre-conditioning a polishing pad for use in chemical mechanical planarization of semiconductor wafers is described. The apparatus includes a pre-conditioning member having a smooth surface. The method includes providing a pre-conditioning member having a smooth surface, pressing the pre-conditioning member against the polishing pad while moving the polishing pad, and flattening the surface of the polishing pad until a polishing pad flatness is achieved that may be used to achieve a desired semiconductor wafer planarity.
    Type: Grant
    Filed: October 3, 2003
    Date of Patent: September 6, 2005
    Assignee: Lam Research Corporation
    Inventors: Alan J. Jensen, Mario Stella, Eugene Zhao, Peter Renteln, Jeffrey Farber
  • Publication number: 20040127144
    Abstract: A method and apparatus for pre-conditioning a polishing pad for use in chemical mechanical planarization of semiconductor wafers is described. The apparatus includes a pre-conditioning member having a smooth surface. The method includes providing a pre-conditioning member having a smooth surface, pressing the pre-conditioning member against the polishing pad while moving the polishing pad, and flattening the surface of the polishing pad until a polishing pad flatness is achieved that may be used to achieve a desired semiconductor wafer planarity.
    Type: Application
    Filed: October 3, 2003
    Publication date: July 1, 2004
    Applicant: Lam Research Corporation
    Inventors: Alan J. Jensen, Mario Stella, Eugene Zhao, Peter Renteln, Jeffrey Farber
  • Patent number: 6645052
    Abstract: A method and apparatus for pre-conditioning a polishing pad for use in chemical mechanical planarization of semiconductor wafers is described. The apparatus includes a pre-conditioning member having a smooth surface. The method includes providing a pre-conditioning member having a smooth surface, pressing the pre-conditioning member against the polishing pad while moving the polishing pad, and flattening the surface of the polishing pad until a polishing pad flatness is achieved that may be used to achieve a desired semiconductor wafer planarity.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: November 11, 2003
    Assignee: Lam Research Corporation
    Inventors: Alan J. Jensen, Mario Stella, Eugene Zhao, Peter Renteln, Jeffrey Farber
  • Publication number: 20030082997
    Abstract: A method and apparatus for pre-conditioning a polishing pad for use in chemical mechanical planarization of semiconductor wafers is described. The apparatus includes a pre-conditioning member having a smooth surface. The method includes providing a pre-conditioning member having a smooth surface, pressing the pre-conditioning member against the polishing pad while moving the polishing pad, and flattening the surface of the polishing pad until a polishing pad flatness is achieved that may be used to achieve a desired semiconductor wafer planarity.
    Type: Application
    Filed: October 26, 2001
    Publication date: May 1, 2003
    Inventors: Alan J. Jensen, Mario Stella, Eugene Zhao, Peter Renteln, Jeffrey Farber
  • Patent number: 6550091
    Abstract: A substrate cleaning system incorporating an edge scrubbing roller is disclosed. The system includes a cleaning station having a first brush and a second brush. The second brush is oriented relative to the first brush so as to receive a flat circular substrate therebetween. The first brush and the second brush are configured to simultaneously scrub a first and second surface of the flat circular substrate. The cleaning station also includes a scrubbing roller that is configured to receive an edge of the flat circular substrate. The scrubbing roller has a scrubbing pad for scrubbing a first surface edge of the first surface, a second surface edge of the second surface, and an edge that is not part of either the first or second surface. The edge scrubbing provided by the scrubbing roller advantageously assists in removing edge beading, metal debris, and other particulates that form during fabrication operations, such as metal deposition.
    Type: Grant
    Filed: October 4, 2000
    Date of Patent: April 22, 2003
    Assignee: Lam Research Corporation
    Inventors: Allan Radman, Mario Stella