Patents by Inventor Andrew D. Wallis

Andrew D. Wallis 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: 7528691
    Abstract: Systems and methods for forming an electrostatic MEMS switch include forming a cantilevered beam on a first substrate, forming the electrical contacts on a second substrate, and coupling the two substrates using a hermetic seal. The hermetic seal may be a gold/indium alloy, formed by heating a layer of indium plated over a layer of gold. Electrical access to the electrostatic MEMS switch may be made by forming vias through the thickness of the second substrate.
    Type: Grant
    Filed: August 26, 2005
    Date of Patent: May 5, 2009
    Assignee: Innovative Micro Technology
    Inventors: Andrew D. Wallis, John S. Foster, Paul J. Rubel, Kimon Rybnicek, Michael J. Shillinger, Jeffrey F. Summers
  • Patent number: 7141080
    Abstract: The invention describes a method and apparatus for deploying micromachined actuators in a plane which is orthogonal to the original fabrication plane of the devices. Using batch-processing, photolithographic procedures known in the micromachined electro-mechanical system (MEMS) art, a plurality of devices is constructed on a suitable substrate. The devices are then separated one from another by sawing and dicing the original fabrication wafer. The devices are rotated into an orthogonal orientation and affixed to a second wafer. The second wafer also contains circuitry for addressing and manipulating each of the devices independently of the others. With this method and apparatus, arrays of actuators are constructed whose plane of actuation is perpendicular to the plane of the array. This invention is useful for constructing N×M fiber optic switches, which direct light from N input fibers into M output fibers.
    Type: Grant
    Filed: November 15, 2005
    Date of Patent: November 28, 2006
    Assignee: Innovative Micro Technology
    Inventors: Patrick E. Feierabend, John S. Foster, Richard T. Martin, Paul J. Rubel, John W. Stocker, Jeffery F. Summers, Andrew D. Wallis