Patents by Inventor Mitchell A. Drew

Mitchell A. Drew 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: 5664925
    Abstract: A system is provided for batch loading semiconductor wafers into a load lock from a portable carrier, for example, used for supporting and transporting a plurality of the wafers in spaced, stacked, relationship. The carrier is supported adjacent a chamber within the load lock. A multilevel end effector associated with the load lock chamber includes a plurality of spaced end effector sets, each set being adapted to support a wafer thereon and aligned with an associated wafer supported in the carrier. The plurality of wafers are engaged and simultaneously retrieved as a grouping, then held in the load lock chamber for subsequent transport, for example, one at a time, into an adjacent transport chamber for delivery to a specified one of a plurality of processing stations. A mini-environment may sealingly isolate the load lock chamber and the interior of the carrier from the surrounding atmosphere.
    Type: Grant
    Filed: January 27, 1997
    Date of Patent: September 9, 1997
    Assignee: Brooks Automation, Inc.
    Inventors: Richard S. Muka, Michael W. Pippins, Mitchell A. Drew
  • Patent number: 5613821
    Abstract: A system is provided for batch loading semiconductor wafers into a load lock from a portable carrier used for supporting a plurality of the wafers in spaced relationship and transporting them in a particle free environment. The carrier is supported adjacent a load lock chamber also having a particle free environment. A multilevel end effector associated with the load lock chamber includes a plurality of spaced end effector sets, each set being adapted to support a wafer thereon and aligned with an associated wafer supported in the carrier. The plurality of wafers are engaged and simultaneously retrieved as a grouping, then held in the load lock chamber for subsequent transport, one at a time, into an adjacent transport chamber for delivery to a specified one of a plurality of processing stations. A mini-environment sealingly isolates the load lock chamber and the interior of the carrier from the surrounding atmosphere.
    Type: Grant
    Filed: July 6, 1995
    Date of Patent: March 25, 1997
    Assignee: Brooks Automation, Inc.
    Inventors: Richard S. Muka, Michael W. Pippins, Mitchell A. Drew
  • Patent number: 5607276
    Abstract: A system is provided for batch loading semiconductor wafers into a load lock from a portable carrier used for supporting a plurality of the wafers in spaced relationship and transporting them in a particle free environment. The carrier is supported adjacent a load lock chamber which also has a particle free environment. A multilevel end effector associated with the load lock chamber includes a plurality of spaced end effector sets, each set being adapted to support a wafer thereon and aligned with an associated wafer supported in the carrier. The plurality of wafers are engaged and simultaneously retrieved as a grouping, then held in the load lock chamber awaiting further processing.
    Type: Grant
    Filed: July 6, 1995
    Date of Patent: March 4, 1997
    Assignee: Brooks Automation, Inc.
    Inventors: Richard S. Muka, Michael W. Pippins, Mitchell A. Drew