Patents by Inventor Gil Lund

Gil Lund 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: 6691720
    Abstract: A system for processing a workpiece includes an inner chamber pivotably supported within an outer chamber. The inner chamber has an opening to allow liquid to drain out. A motor pivots the inner chamber to bring the opening at or below the level of liquid in the inner chamber. As the inner chamber turns, liquid drains out. Workpieces within the inner chamber are supported on a holder or a rotor, which may be fixed or rotating. Multi processes may be performed within the inner chamber, reducing the need to move the workpieces between various apparatus and reducing risk of contamination.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: February 17, 2004
    Assignee: Semitool, Inc.
    Inventors: Eric Bergman, Dana Scranton, Eric Lund, Gil Lund
  • Patent number: 6668844
    Abstract: Workpieces requiring low levels of contamination, such as semiconductor wafers, are loaded into a rotor within a process chamber. The process chamber has a horizontal drain opening in its cylindrical wall. The chamber is closed via a door. A process or rinsing liquid is introduced into the chamber. The liquid rises to a level so that the workpieces are immersed in the liquid. The chamber slowly pivots or rotates to move the drain opening down to the level of the liquid. The liquid drains out through the drain opening. The drain opening is kept near the surface of the liquid to drain off liquid at a uniform rate. An organic solvent vapor is introduced above the liquid to help prevent droplets of liquid from remaining on the workpieces as the liquid drains off. The rotor spins the workpieces to help to remove any remaining droplets by centrifugal force.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: December 30, 2003
    Assignee: Semitool, Inc.
    Inventors: Eric Lund, Joe Lanfrankie, Gil Lund, Dana Scranton, Eric Bergman
  • Patent number: 6427359
    Abstract: Workpieces requiring low levels of contamination, such as semiconductor wafers, are loaded into a workpiece support or holder within a process chamber. The process chamber has a drain opening, slot or edge. The chamber is closed via a door. A process or rinsing liquid is introduced into the chamber. The liquid rises to a level so that the workpieces are immersed in the liquid. The chamber slowly pivots or rotates to move the drain opening down to the level of the liquid. The liquid drains out through the drain opening. The drain opening is kept near the surface of the liquid to drain off liquid at a uniform rate. An organic solvent vapor is introduced above the liquid to reduce or prevent droplets of liquid from remaining on the workpieces as the liquid drains off. An outer chamber may be provided around the process chamber to provide increased control of the process environment.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: August 6, 2002
    Assignee: Semitool, Inc.
    Inventors: Dana Scranton, Eric Bergman, Eric Lund, Gil Lund