Patents Assigned to California Institue of Technology
  • Publication number: 20140209479
    Abstract: A wastewater treatment system and method for remediating wastewater and human waste that is self-contained and that has no connection to a municipal wastewater system and no connection to an electrical grid. The domestic toilet and wastewater treatment system can be powered by a photovoltaic panel as a source of electricity. The system includes an electrochemical cell that allows a waste stream to be disinfected in a few hours to a condition where no viable bacterial colonies can be cultured. The system produces a liquid stream that is suitable for system flushing or for uses in which non-potable water is acceptable. The system can generate hydrogen as a product that can be used to generate power. The system can generate nitrate, urea, ammonia and phosphate for use as fertilizer. The disinfected residual organic solids are also completely disinfected for potential use as an organic soil amendment for agriculture.
    Type: Application
    Filed: October 8, 2013
    Publication date: July 31, 2014
    Applicant: CALIFORNIA INSTITUE OF TECHNOLOGY
    Inventors: Michael R. Hoffmann, Asghar Aryanfar, Kangwoo Cho, Clement A. Cid, Daejung Kwon, Yan Qu
  • Patent number: 8656958
    Abstract: A method of fabricating an elastomeric structure, comprising: forming a first elastomeric layer on top of a first micromachined mold, the first micromachined mold having a first raised protrusion which forms a first recess extending along a bottom surface of the first elastomeric layer; forming a second elastomeric layer on top of a second micromachined mold, the second micromachined mold having a second raised protrusion which forms a second recess extending along a bottom surface of the second elastomeric layer; bonding the bottom surface of the second elastomeric layer onto a top surface of the first elastomeric layer such that a control channel forms in the second recess between the first and second elastomeric layers; and positioning the first elastomeric layer on top of a planar substrate such that a flow channel forms in the first recess between the first elastomeric layer and the planar substrate.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: February 25, 2014
    Assignee: California Institue of Technology
    Inventors: Marc A. Unger, Hou-Pu Chou, Todd A. Thorsen, Axel Scherer, Stephen R. Quake, Markus M. Enzelberger, Mark L. Adams, Carl L. Hansen
  • Patent number: 8148264
    Abstract: Methods for fabrication of high aspect ratio micropillars and nanopillars are described. Use of alumina as an etch mask for the fabrication methods is also described. The resulting micropillars and nanopillars are analyzed and a characterization of the etch mask is provided.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: April 3, 2012
    Assignee: California Institue of Technology
    Inventors: Michael D. Henry, Andrew P. Homyk, Axel Scherer, Sameer Walavalkar
  • Publication number: 20080019998
    Abstract: Methods and compositions are provided for delivery of a polynucleotide encoding a gene of interest, typically an antigen, to a dendritic cell (DC). The virus envelope comprises a DC-SIGN specific targeting molecule. The methods and related compositions can be used to treat patients suffering from a wide range of conditions, including infection, such as HIV/AIDS, and various types of cancers.
    Type: Application
    Filed: July 23, 2007
    Publication date: January 24, 2008
    Applicant: CALIFORNIA INSTITUE OF TECHNOLOGY
    Inventors: Pin Wang, Lili Yang, David Baltimore
  • Patent number: 7292654
    Abstract: A concatenated coding scheme, using an outer coder, interleaver, and the inner coder inherent in an FQPSK signal to form a coded FQPSK signal. The inner coder is modified to enable interative decoding of the outer code.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: November 6, 2007
    Assignee: California Institue of Technology
    Inventors: Marvin K. Simon, Dariush Divsalar
  • Patent number: 6647796
    Abstract: An integrated microsensor includes a bowed micromachined membrane coupled to a substrate to define a microcavity therebetween. An integrated strain sensor is coupled to the micromachined membrane to generate a signal responsive to (deformation of the membrane and hence responsive to the pressure of the fluid in the microcavity. A frame is coupled to the peripheral edge of the membrane to assist in enlarging the microcavity. The membrane is composed of a nitride of B, Al, Ga, In, Tl or combinations thereof, or more particularly of p-type GaN where the frame is comprised of n-type GaN. The membrane and frame are fabricated using a photoelectrochemical etching technique. The fabrication of the integrated strain sensor creates stresses across the membrane. The strain sensor comprises an integrated circuit strain-FET. The strain-FET comprises an AlGaN/GaN heterostructure having an AlGaN/GaN interface where deformation of the membrane is coupled as strain to the AlGaN/GaN piezoelectric interface.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: November 18, 2003
    Assignee: California Institue of Technology
    Inventors: Robert A. Beach, Robert P. Strittmatter, Thomas C. McGill
  • Patent number: 5689055
    Abstract: The invention includes transformed plants having at least one cell transformed with a modified ETR nucleic acid. Such plants have a phenotype characterized by a decrease in the response of at least one transformed plant cell to ethylene as compared to a plant not containing the transformed plant cell. Tissue and/or temporal specificity for expression of the modified ETR nucleic acid is controlled by selecting appropriate expression regulation sequences to target the location and/or time of expression of the transformed nucleic acid. The plants are made by transforming at least one plant cell with an appropriate modified ETR nucleic acid, regenerating plants from one or more of the transformed plant cells and selecting at least one plant having the desired phenotype.
    Type: Grant
    Filed: September 19, 1995
    Date of Patent: November 18, 1997
    Assignee: California Institue of Technology
    Inventors: Elliott M. Meyerowitz, Caren Chang, Anthony B. Bleecker
  • Patent number: 5451890
    Abstract: The basic building block of the invention is an inverter gate consisting of two stages: The first stage is an input logic switching stage consisting of a depletion mode pull-up FET whose gate is the input node and whose source-to-drain channel is connected in series through a level-shifting Schottky diode with the source-to-drain channel of an depletion mode pull-down FET between drain and source voltage rails. The source of the pull-up FET is connected to the diode's anode while the drain of the pull-down FET is connected to the diode's cathode and is the output node of the input logic switching stage. The level-shifting diode isolates the output node from the input node, which allows the input voltage to switch rail-to-rail without causing problems.
    Type: Grant
    Filed: April 11, 1994
    Date of Patent: September 19, 1995
    Assignee: California Institue of Technology
    Inventors: Alain J. Martin, Jose A. Tierno, Brian Von Herzen