Patents by Inventor James Demmel

James Demmel 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: 8079246
    Abstract: The present invention provides a device for in-situ monitoring of material, process and dynamic properties of a MEMS device. The monitoring device includes a pair of comb drives, a cantilever suspension comprising a translating shuttle operatively connected with the pair of comb drives, structures for applying an electrical potential to the comb drives to displace the shuttle, structures for measuring an electrical potential from the pair of comb drives; measuring combs configured to measure the displacement of the shuttle, and structures for measuring an electrical capacitance of the measuring combs. Each of the comb drives may have differently sized comb finger gaps and a different number of comb finger gaps. The shuttle may be formed on two cantilevers perpendicularly disposed with the shuttle, whereby the cantilevers act as springs to return the shuttle to its initial position after each displacement.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: December 20, 2011
    Assignee: The Regents of the University of California
    Inventors: David Garmire, Hyuck Choo, Richard S. Muller, James Demmel, Sanjay Govindjee
  • Publication number: 20090322365
    Abstract: The present invention provides a device for in-situ monitoring of material, process and dynamic properties of a MEMS device. The monitoring device includes a pair of comb drives, a cantilever suspension comprising a translating shuttle operatively connected with the pair of comb drives, structures for applying an electrical potential to the comb drives to displace the shuttle, structures for measuring an electrical potential from the pair of comb drives; measuring combs configured to measure the displacement of the shuttle, and structures for measuring an electrical capacitance of the measuring combs. Each of the comb drives may have differently sized comb finger gaps and a different number of comb finger gaps. The shuttle may be formed on two cantilevers perpendicularly disposed with the shuttle, whereby the cantilevers act as springs to return the shuttle to its initial position after each displacement.
    Type: Application
    Filed: April 19, 2007
    Publication date: December 31, 2009
    Applicant: Regents of the University of California
    Inventors: David Garmire, Hyuck Choo, Richard S. Muller, James Demmel, Sanjay Govindjee
  • Patent number: 7573022
    Abstract: The present invention relates to systems and methods for fabricating microscanners. The fabrication processes employed pursuant to some embodiments are compatible with well known CMOS fabrication techniques, allowing devices for control, monitoring and/or sensing to be integrated onto a single chip. Both one- and two-dimensional microscanners are described. Applications including optical laser surgery, maskless photolithography, portable displays and large scale displays are described.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: August 11, 2009
    Assignee: The Regents of the University of California
    Inventors: Hyuck Choo, David Garmire, Richard S. Muller, James Demmel
  • Publication number: 20070026614
    Abstract: The present invention relates to systems and methods for fabricating microscanners. The fabrication processes employed pursuant to some embodiments are compatible with well known CMOS fabrication techniques, allowing devices for control, monitoring and/or sensing to be integrated onto a single chip. Both one- and two-dimensional microscanners are described. Applications including optical laser surgery, maskless photolithography, portable displays and large scale displays are described.
    Type: Application
    Filed: July 25, 2006
    Publication date: February 1, 2007
    Inventors: Hyuck Choo, David Garmire, Richard Muller, James Demmel