Patents Represented by Attorney The Law Office of Tina M. Lessani
  • Patent number: 7125739
    Abstract: A method for producing a corrosion-resistant channel in a wetted path of a silicon device enables such device to be used with corrosive compounds, such as fluorine. A wetted path of a MEMS device is coated with either (1) an organic compound resistant to attack by atomic fluorine or (2) a material capable of being passivated by atomic fluorine. The device is then exposed to a gas that decomposes into active fluorine compounds when activated by a plasma discharge. One example of such a gas is CF4, an inert gas that is easier and safer to work with than volatile gases like ClF3. The gas will passivate the material (if applicable) and corrode any exposed silicon. The device is tested in such a manner that any unacceptable corrosion of the wetted path will cause the device to fail. If the device operates properly, the wetted path is deemed to be resistant to corrosion by fluorine or other corrosive compounds, as applicable.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: October 24, 2006
    Inventors: James M. Harris, Sapna Patel
  • Patent number: 7055550
    Abstract: A novel fluid delivery system includes a mounting panel, where the mounting panel includes channels that define the flow of fluid between any flow-control components mounted on the mounting panel. The mounting panel comprises a top plate and a bottom plate, and the channels are carved out of the underside of the top plate and are enclosed by the bottom plate. In a complex fluid delivery system having many fluid channels, the mounting panel may include one or more interior panels with additional channels carved out of the interior plates to accommodate all routing paths. The channels run in two or more directions to connect two or more gas/channel sticks together.
    Type: Grant
    Filed: June 14, 2005
    Date of Patent: June 6, 2006
    Inventors: James M. Harris, Selser J. Michael
  • Patent number: 6907904
    Abstract: A novel fluid delivery system includes a mounting panel, where the mounting panel includes channels that define the flow of fluid between any flow-control components mounted on the mounting panel. The mounting panel comprises a top plate and a bottom plate, and the channels are carved out of the underside of the top plate and are enclosed by the bottom plate. In a complex fluid delivery system having many fluid channels, the mounting panel may include one or more interior panels with additional channels carved out of the interior plates to accommodate all routing paths. The channels run in two or more directions to connect two or more gas/channel sticks together.
    Type: Grant
    Filed: March 3, 2003
    Date of Patent: June 21, 2005
    Assignee: Redwood Microsystems, Inc.
    Inventors: James M. Harris, Selser J. Michael
  • Patent number: 6869818
    Abstract: A method for producing a corrosion-resistant channel in a wetted path of a silicon device enables such device to be used with corrosive compounds, such as fluorine. A wetted path of a MEMS device is coated with either (1) an organic compound resistant to attack by atomic fluorine or (2) a material capable of being passivated by atomic fluorine. The device is then exposed to a gas that decomposes into active fluorine compounds when activated by a plasma discharge. One example of such a gas is CF4, an inert gas that is easier and safer to work with than volatile gases like ClF3. The gas will passivate the material (if applicable) and corrode any exposed silicon. The device is tested in such a manner that any unacceptable corrosion of the wetted path will cause the device to fail. If the device operates properly, the wetted path is deemed to be resistant to corrosion by fluorine or other corrosive compounds, as applicable.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: March 22, 2005
    Assignee: Redwood Microsystems, Inc.
    Inventors: James M. Harris, Sapna Patel