Patents by Inventor Valluri Rao

Valluri Rao 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: 6943419
    Abstract: A film bulk acoustic resonator wafer and microelectromechanical switch wafer may be combined together in face-to-face abutment with sealing material between the wafers to define individual modules. Electrical interconnects can be made between the switch and the film bulk acoustic resonator within a hermetically sealed chamber defined between the switch and the film bulk acoustic resonator.
    Type: Grant
    Filed: February 5, 2004
    Date of Patent: September 13, 2005
    Assignee: Intel Corporation
    Inventors: Daniel M. Wong, John Heck, Valluri Rao
  • Patent number: 6940367
    Abstract: A film bulk acoustic resonator may be formed with a piezoelectric film having improved quality. The piezoelectric film may be deposited directly onto a single crystal silicon substrate. That substrate may be removed and selectively replaced with a lower electrode to form the film bulk acoustic resonator.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: September 6, 2005
    Assignee: Intel Corporation
    Inventors: Qing Ma, Li-Peng Wang, Valluri Rao
  • Publication number: 20050147980
    Abstract: The methods and apparatus disclosed herein are useful for detecting nucleotides, nucleosides, and bases and for nucleic acid sequence determination. The methods involve detection of a nucleotide, nucleoside, or base using surface enhanced Raman spectroscopy (SERS). The detection can be part of a nucleic acid sequencing reaction to detect uptake of a deoxynucleotide triphosphate during a nucleic acid polymerization reaction, such as a nucleic acid sequencing reaction. The nucleic acid sequence of a synthesized nascent strand, and the complementary sequence of the template strand, can be determined by tracking the order of incorporation of nucleotides during the polymerization reaction.
    Type: Application
    Filed: December 30, 2003
    Publication date: July 7, 2005
    Applicant: Intel Corporation
    Inventors: Andrew Berlin, Steven Kirch, Gabi Neubauer, Valluri Rao, Mineo Yamakawa
  • Publication number: 20050148065
    Abstract: Systems and methods for detecting the presence of biomolecules in a sample using biosensors that incorporate resonators which have functionalized surfaces for reacting with target biomolecules. In one embodiment, a device includes a piezoelectric resonator having a functionalized surface configured to react with target molecules, thereby changing the mass and/or charge of the resonator which consequently changes the frequency response of the resonator. The resonator's frequency response after exposure to a sample is compared to a reference, such as the frequency response before exposure to the sample, a stored baseline frequency response or a control resonator's frequency response.
    Type: Application
    Filed: December 30, 2003
    Publication date: July 7, 2005
    Applicant: Intel Corporation
    Inventors: Yuegang Zhang, Andrew Berlin, Qing Ma, Li-Peng Wang, Valluri Rao, Mineo Yamakawa
  • Publication number: 20050140246
    Abstract: A film bulk acoustic resonator is formed on a substrate. The film bulk acoustic resonator includes a layer of piezoelectric material having a first surface proximate the substrate, and a second surface distal from the substrate. The first conductive layer deposited on the first surface of the piezoelectric material includes a first portion having a surface on a different plane than a surface associated with a second portion.
    Type: Application
    Filed: February 23, 2005
    Publication date: June 30, 2005
    Inventors: Li-Peng Wang, Oing Ma, Valluri Rao
  • Publication number: 20050138996
    Abstract: A surface analysis device is disclosed for identifying molecules by simultaneously scanning nanocodes on a surface of a substrate. The device includes a scanning array that is capable of simultaneously scanning the nanocodes on the surface of the substrate and an analyzer that is coupled with the scanning array. The analyzer is capable of receiving simultaneously scanned information from the scanning array and identifying molecules associated with the nanocodes.
    Type: Application
    Filed: December 29, 2003
    Publication date: June 30, 2005
    Applicant: Intel Corporation
    Inventors: Andrew Berlin, Narayanan Sundararajan, Mineo Yamakawa, Valluri Rao
  • Patent number: 6903452
    Abstract: A microelectromechanical system may be enclosed in a hermetic cavity defined by joined, first and second semiconductor structures. The joined structures may be sealed by a solder sealing ring, which extends completely around the cavity. One of the semiconductor structures may have the system formed thereon and an open area may be formed underneath said system. That open area may be formed from the underside of the structure and may be closed by covering with a suitable film in one embodiment.
    Type: Grant
    Filed: August 19, 2003
    Date of Patent: June 7, 2005
    Assignee: Intel Corporation
    Inventors: Qing Ma, Valluri Rao, Li-Peng Wang, John Heck, Quan Tran
  • Publication number: 20050090042
    Abstract: An electronic assembly is assembled by stacking two or more integrated circuit dies on top of one another. Prior to singulation, an opening is laser-drilled into an upper die, and subsequently filled with a conductive member. The conductive member is located on a lower die and interconnects integrated circuits of the upper and lower dies. Laser-drilling allows for faster throughput when compared to, for example, etching, especially if a small number of openings has to be formed. The opening is laser-drilled from an upper surface of the upper die all the way through the die, which allows for the use of alignment marks on an upper surface of the upper die.
    Type: Application
    Filed: November 23, 2004
    Publication date: April 28, 2005
    Inventors: Johanna Swan, Bala Natarajan, Chien Chiang, Greg Atwood, Valluri Rao
  • Publication number: 20050062120
    Abstract: A MEMS device may be formed in a hermetic cavity by sealing a pair of semiconductor structures to one another, enclosing the MEMS device. The two structures may be coupled using surface mount techniques as one example, so that the temperatures utilized may be compatible with many MEMS applications. Electrical interconnection layers in one or the other of these structures may be utilized to allow electrical interconnections from the exterior world to the MEMS components within the cavity.
    Type: Application
    Filed: November 3, 2004
    Publication date: March 24, 2005
    Inventors: Qing Ma, Valluri Rao, John Heck, Daniel Wong, Michele Berry
  • Publication number: 20050057399
    Abstract: An antenna for a wireless device may be kept dynamically tuned to a desired center frequency to compensate for detuning which may be caused by environmental influences. A sensor provides a feedback signal to a controller to select an appropriate capacitance value from a variable capacitor to tune the antenna for the wireless device. The variable capacitor may comprise a plurality of fixed capacitors and MEMS switches arranged in parallel or may comprise a variable MEMS capacitor having a fixed lower plate and a flexible upper plate.
    Type: Application
    Filed: June 25, 2004
    Publication date: March 17, 2005
    Inventors: Issy Kipnis, Valluri Rao, Balakrishnan Srinivasan, Joe Hayden
  • Patent number: 6861783
    Abstract: A film bulk acoustic resonator is formed on a substrate. The film bulk acoustic resonator includes a layer of piezoelectric material having a first surface proximate the substrate, and a second surface distal from the substrate. The first conductive layer deposited on the first surface of the piezoelectric material includes a first portion having a surface on a different plane than a surface associated with a second portion.
    Type: Grant
    Filed: November 19, 2003
    Date of Patent: March 1, 2005
    Assignee: Intel Corporation
    Inventors: Li-Peng Wang, Qing Ma, Valluri Rao
  • Publication number: 20050035420
    Abstract: A film bulk acoustic resonator may be formed with a piezoelectric film having improved quality. The piezoelectric film may be deposited directly onto a single crystal silicon substrate. That substrate may be removed and selectively replaced with a lower electrode to form the film bulk acoustic resonator.
    Type: Application
    Filed: September 10, 2004
    Publication date: February 17, 2005
    Inventors: Qing Ma, Li-Peng Wang, Valluri Rao
  • Publication number: 20050036269
    Abstract: A microelectromechanical (MEMS) resonator with a vacuum-cavity is fabricated using polysilicon-enabled release methods. A vacuum-cavity surrounding the MEMS beam is formed by removing release material that surrounds the beam and sealing the resulting cavity under vacuum by depositing a layer of nitride over the structure. The vacuum-cavity MEMS resonators have cantilever beams, bridge beams or breathing-bar beams.
    Type: Application
    Filed: August 19, 2004
    Publication date: February 17, 2005
    Inventors: Qing Ma, Peng Cheng, Valluri Rao
  • Patent number: 6855946
    Abstract: In one embodiment, the present invention includes a method. In the method, a fiducial transistor is provided in an integrated circuit. Also in the method, a power conductor is coupled to a first terminal of the transistor. Also in the method, a ground conductor is coupled to a second terminal of the transistor. Also in the method, a control conductor is coupled to a third terminal of the transistor. Also in the method, other circuitry is provided, the other circuitry is operatively decoupled from the fiducial transistor and the other circuitry is operable without the fiducial transistor.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: February 15, 2005
    Assignee: Intel Corporation
    Inventors: Steve Seidel, Simon Tam, Valluri Rao, Stefan Rusu, Richard Livengood
  • Publication number: 20050030128
    Abstract: A film bulk acoustic resonator is formed on a substrate having a major surface. The film bulk acoustic resonator includes an elongated stack. The elongated stack includes a layer of piezoelectric material positioned between a first conductive layer deposited on a first surface of the layer of piezoelectric material, and a second conductive layer deposited on a second surface of the layer of piezoelectric material. The elongated stack is positioned substantially perpendicular with respect to the major surface of the substrate. The first and second conductive layers are placed on the layer of piezoelectric material substantially simultaneously and in one processing step. The major surface of the substrate is in a horizontal plane and the stack of the film bulk acoustic resonator is in a substantially vertical plane. The resonator structure formed may be used either as a resonator or a filter.
    Type: Application
    Filed: September 16, 2004
    Publication date: February 10, 2005
    Inventors: Qing Ma, Li-Peng Wang, Valluri Rao
  • Patent number: 6852926
    Abstract: A MEMS device may be formed in a hermetic cavity by sealing a pair of semiconductor structures to one another, enclosing the MEMS device. The two structures may be coupled using surface mount techniques as one example, so that the temperatures utilized may be compatible with many MEMS applications. Electrical interconnection layers in one or the other of these structures may be utilized to allow electrical interconnections from the exterior world to the MEMS components within the cavity.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: February 8, 2005
    Assignee: Intel Corporation
    Inventors: Qing Ma, Valluri Rao, John Heck, Daniel Wong, Michele Berry
  • Patent number: 6852492
    Abstract: The methods, compositions and apparatus disclosed herein are of use for nucleic acid sequence determination. The methods involve isolation of one or more nucleic acid template molecules and polymerization of a nascent complementary strand of nucleic acid, using a DNA or RNA polymerase or similar synthetic reagent. As the nascent strand is extended one nucleotide at a time, the disappearance of nucleotide precursors from solution is monitored by Raman spectroscopy or FRET. The nucleic acid sequence of the nascent strand, and the complementary sequence of the template strand, may be determined by tracking the order of incorporation of nucleotide precursors during the polymerization reaction. Certain embodiments concern apparatus comprising a reaction chamber and detection unit, of use in practicing the claimed methods. The methods, compositions and apparatus are of use in sequencing very long nucleic acid templates in a single sequencing reaction.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: February 8, 2005
    Assignee: Intel Corporation
    Inventors: Andrew Berlin, Steven J. Kirch, Gabi Neubauer, Valluri Rao, Mineo Yamakawa
  • Publication number: 20050007219
    Abstract: This application discloses a microelectromechanical (MEMS) switch apparatus comprising an anchor attached to a substrate and an electrically conductive beam attached to the anchor and in electrical contact therewith. The beam comprises a tapered portion having a proximal end and a distal end, the proximal end being attached to the anchor, an actuation portion attached to the distal end of the tapered portion, a tip attached to the actuation portion, the tip having a contact dimple thereon. The switch apparatus also includes an actuation electrode attached to the substrate and positioned between the actuation portion and the substrate. Additional embodiments are also described and claimed.
    Type: Application
    Filed: August 4, 2004
    Publication date: January 13, 2005
    Inventors: Qing Ma, Valluri Rao, John Heck, Li-Peng Wang, Dong Shim, Quan Tran
  • Publication number: 20040261987
    Abstract: An apparatus and system, as well as fabrication methods therefor, may include a thermal interface material comprised of an array of carbon nanotubes and a buffer layer disposed between the thermal interface material and one of a die or a heat spreader.
    Type: Application
    Filed: June 30, 2003
    Publication date: December 30, 2004
    Inventors: Yuegang Zhang, C. Michael Garner, Andrew A. Berlin, Valluri Rao, Bryan M. White, Paul A. Koning
  • Publication number: 20040248185
    Abstract: The methods, compositions and apparatus disclosed herein are of use for nucleic acid sequence determination. The methods involve isolation of one or more nucleic acid template molecules and polymerization of a nascent complementary strand of nucleic acid, using a DNA or RNA polymerase or similar synthetic reagent. As the nascent strand is extended one nucleotide at a time, the disappearance of nucleotide precursors from solution is monitored by Raman spectroscopy or FRET. The nucleic acid sequence of the nascent strand, and the complementary sequence of the template strand, may be determined by tracking the order of incorporation of nucleotide precursors during the polymerization reaction. Certain embodiments concern apparatus comprising a reaction chamber and detection unit, of use in practicing the claimed methods. The methods, compositions and apparatus are of use in sequencing very long nucleic acid templates in a single sequencing reaction.
    Type: Application
    Filed: July 7, 2004
    Publication date: December 9, 2004
    Applicant: INTEL CORPORATION
    Inventors: Andrew Berlin, Steven J. Kirch, Gabi Neubauer, Valluri Rao, Mineo Yamakawa