Patents by Inventor Syed S. Basha

Syed S. Basha 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: 6333268
    Abstract: Adherent matrix layers such as post-etch and other post-process residues are removed from a substrate by exposing them to a vapor phase solvent to allow penetration of the vapor phase solvent into the adherent matrix layers and condensing the vapor phase solvent into the adherent matrix layers and revaporized to promote fragmentation of the matrix and facilitate removal. Megasonic energy may be transmitted via a transmission member to the adherent matrix through the solvent condensed thereon to loosen fragments and particles. The substrate is typically rotated to improve contact between the megasonic energy transmission member and the condensed solvent and achieve more uniform cleaning. A co-solvent which is soluble in the vapor phase solvent may be added to enhance removal of specific adherent matrix materials.
    Type: Grant
    Filed: August 1, 2000
    Date of Patent: December 25, 2001
    Assignee: Novellus Systems, Inc.
    Inventors: Vladimir Starov, Shmuel Erez, Syed S. Basha, Arkadiy I. Shimanovich, Ravi Vellanki, Krishnan Shrinivasan, Karen A. Reinhardt, Aleksandr Kabansky
  • Patent number: 6228563
    Abstract: Adherent matrix layers such as post-etch and other post-process residues are removed from a substrate by exposing them to a vapor phase solvent to allow penetration of the vapor phase solvent into the adherent matrix layers and condensing the vapor phase solvent into the adherent matrix layers and revaporized to promote fragmentation of the matrix and facilitate removal. Megasonic energy may be transmitted via a transmission member to the adherent matrix through the solvent condensed thereon to loosen fragments and particles. The substrate is typically rotated to improve contact between the megasonic energy transmission member and the condensed solvent and achieve more uniform cleaning. A co-solvent which is soluble in the vapor phase solvent may be added to enhance removal of specific adherent matrix materials.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: May 8, 2001
    Assignee: Gasonics International Corporation
    Inventors: Vladimir Starov, Syed S. Basha, Krishnan Shrinivasan, Karen A. Reinhardt, Aleksandr Kabansky
  • Patent number: 6190103
    Abstract: A substrate handling apparatus includes a transfer elevator and a process station disposed inside a load lock chamber. The process station includes a top module, a bottom module, and a seal ring which is disposed between the top module and the bottom module and is movable to open and close the process station. The transfer elevator has an upper station spaced above a lower station. A transfer device having a pair of transfer arms is used to transfer substrates between the transfer elevator and the process station. The transfer arms are movable toward one another to support a substrate and apart from one another to release the substrate. The transfer arms are mounted to rotate between the transfer elevator and the process station. When a substrate is being processed inside the process station, the transfer arms are disposed on opposite sides of the process station.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: February 20, 2001
    Assignee: GaSonics International Corporation
    Inventors: Shmuel Erez, Syed S. Basha, Art Hajjarian