Patents Assigned to California Institue of Technology
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Publication number: 20140209479Abstract: 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: ApplicationFiled: October 8, 2013Publication date: July 31, 2014Applicant: CALIFORNIA INSTITUE OF TECHNOLOGYInventors: Michael R. Hoffmann, Asghar Aryanfar, Kangwoo Cho, Clement A. Cid, Daejung Kwon, Yan Qu
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Patent number: 8656958Abstract: 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: GrantFiled: October 31, 2007Date of Patent: February 25, 2014Assignee: California Institue of TechnologyInventors: Marc A. Unger, Hou-Pu Chou, Todd A. Thorsen, Axel Scherer, Stephen R. Quake, Markus M. Enzelberger, Mark L. Adams, Carl L. Hansen
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Patent number: 8148264Abstract: 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: GrantFiled: February 24, 2010Date of Patent: April 3, 2012Assignee: California Institue of TechnologyInventors: Michael D. Henry, Andrew P. Homyk, Axel Scherer, Sameer Walavalkar
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Publication number: 20080019998Abstract: 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: ApplicationFiled: July 23, 2007Publication date: January 24, 2008Applicant: CALIFORNIA INSTITUE OF TECHNOLOGYInventors: Pin Wang, Lili Yang, David Baltimore
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Patent number: 7292654Abstract: 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: GrantFiled: August 31, 2006Date of Patent: November 6, 2007Assignee: California Institue of TechnologyInventors: Marvin K. Simon, Dariush Divsalar
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Patent number: 6647796Abstract: 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: GrantFiled: August 7, 2001Date of Patent: November 18, 2003Assignee: California Institue of TechnologyInventors: Robert A. Beach, Robert P. Strittmatter, Thomas C. McGill
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Patent number: 5689055Abstract: 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: GrantFiled: September 19, 1995Date of Patent: November 18, 1997Assignee: California Institue of TechnologyInventors: Elliott M. Meyerowitz, Caren Chang, Anthony B. Bleecker
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Patent number: 5451890Abstract: 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: GrantFiled: April 11, 1994Date of Patent: September 19, 1995Assignee: California Institue of TechnologyInventors: Alain J. Martin, Jose A. Tierno, Brian Von Herzen