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Princeton University Patents
Assignee:
Princeton University
Address:
Princeton, NJ
No. of patents:
99
Patents:


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Patent Number Title Of Patent Date Issued
8254242 System and method for initial ranging in wireless communication systems August 28, 2012
A system and method for initial ranging in wireless communication systems is provided. A plurality of orthogonal frequency division multiplexing (OFDM) blocks are received by an OFDMA base station transceiver from a plurality of remote user devices in wireless communication with the base
8009520 Method and system for operating an atomic clock using a self-modulated laser with electrical mod August 30, 2011
A polarization gain medium such as an emitting laser diode provides the optical pumping. An atomic vapor cell is positioned in the laser cavity providing spontaneous push-pull optical pumping inside the laser cavity. This causes the laser beam to be modulated at hyperfine-resonance f
7931794 Method and system for electrolytic fabrication of atomic clock cells April 26, 2011
The present invention relates to a method and system for electrolytic fabrication of cells. A cell can be formed of a silicon layer (cathode) sandwiched between layers of glass. One or more holes are formed in the silicon layer. An alkali metal enriched glass material is placed in or
7877340 System and method for resolving gamma-ray spectra January 25, 2011
A system for identifying radionuclide emissions is described. The system includes at least one processor for processing output signals from a radionuclide detecting device, at least one training algorithm run by the at least one processor for analyzing data derived from at least one set
7825736 Method for suppressing light shift in optical pumping systems November 2, 2010
The present invention relates to a method and system to suppress or eliminate light shift in an optical pumping system, such as an atomic clock. The method uses modulation of a radiation source, such as a radio frequency or microwave source, to simultaneously lock the frequency of th
7758794 Method of making an article comprising nanoscale patterns with reduced edge roughness July 20, 2010
In accordance with the invention, an article comprising a nanoscale surface pattern, such as a grating, is provided with a nanoscale patterns of reduced edge and/or sidewall roughness. Smooth featured articles, can be fabricated by nanoimprint lithography using a mold having sloped p
7744039 Systems and methods for controlling flows with electrical pulses June 29, 2010
Systems and methods for controlling flow with electrical pulses are disclosed. An aircraft system in accordance with one embodiment includes an aerodynamic body having a flow surface exposed to an adjacent air stream, and a flow control assembly that includes a first electrode positi
7700498 Self-repair and enhancement of nanostructures by liquification under guiding conditions April 20, 2010
In accordance with the invention, the structure (10A, 10B) of a patterned nanoscale or near nanoscale device ("nanostructure") is repaired and/or enhanced by liquifying the patterned device in the presence of appropriate guiding conditions for a period of time and then permitting the
7666619 Compounds and methods for regulating bacterial growth and pathogenesis February 23, 2010
The invention provides autoinducer-2 analogs that regulate the activity of autoinducer-2 and methods of using such analogs for regulating bacterial growth and pathogenesis.
7635262 Lithographic apparatus for fluid pressure imprint lithography December 22, 2009
Improved apparatus for imprint lithography involves using direct fluid pressure to press a mold into a substrate-supported film. Advantageously the mold and/or substrate are sufficiently flexible to provide wide area contact under the fluid pressure. Fluid pressing can be accomplished by
7588657 Pattern-free method of making line gratings September 15, 2009
In accordance with the invention, substrate-supported linear arrays are formed by the steps of adhering a thin layer of polymer between a pair of substrates and separating the substrates perpendicular to the layer. The polymer layer separates to form substrate-supported polymer gratings
7510946 Method for filling of nanoscale holes and trenches and for planarizing of a wafer surface March 31, 2009
A processing method for use in the fabrication of fabrication of nanoscale electronic, optical, magnetic, biological, and fluidic devices and structures, for filling nanoscale holes and trenches, for planarizing a wafer surface, or for achieving both filling and planarizing of a wafer
7504355 Supported metal catalyst with improved thermal stability March 17, 2009
Catalytic systems are provided that include a metallic catalyst attached to a ceramic support that has alumina as a principal ingredient. The ceramic support is doped with an adhesive agent so that the surface of the support includes the adhesive agent. The adhesive agent is designed
7491892 Stretchable and elastic interconnects February 17, 2009
The present invention relates to stretchable interconnects which can be made in various geometric configurations, depending on the intended application. The stretchable interconnects can be formed of an electrically conducting film or an elastomer material to provide elastic properti
7439814 Method and system for operating an atomic clock with simultaneous control of frequency and magne October 21, 2008
The present invention relates to a method and system in which multi-coherent resonances of a microwave in which the alkali-metal atoms in the ground state are driven simultaneously by a microwave hyperfine frequency .OMEGA..sub.H and a Zeeman frequency .OMEGA..sub.Z. The driving infl
7418134 Method and apparatus for foreground segmentation of video sequences August 26, 2008
The present invention relates to a method and system for foreground segmentation in which frames of a video sequence are analyzed in the transform domain to determine one or more features. The features are used to model the background. The background can be modeled as a single Gaussi
7344850 Identification of active-site inhibitors of glycosyltransferases using a generalizable high-thro March 18, 2008
A method is described for identifying a compound that modulates the ability of a glycosyltransferase to bind a substrate comprising combining a glycosyltransferase, a labeled substrate, and a compound, in a reaction vessel, under conditions known to be suitable for the glycosyltransferas
7326542 Compositions and methods for regulating bacterial pathogenesis February 5, 2008
The production of a purified extracellular bacterial signal called autoinducer-2 is regulated by changes in environmental conditions associated with a shift from a free-living existence to a colonizing or pathogenic existence in a host organism. Autoinducer-2 stimulates LuxQ luminesc
7323941 Method and system for operating a laser self-modulated at alkali-metal atom hyperfine frequency January 29, 2008
The present invention provides a method and apparatus for making atomic clocks or atomic magnetometers as self-modulated laser systems based on the physics of push-pull optical pumping. An atomic vapor cell is required to be in the laser cavity. With proper conditions, spontaneous pu
7323340 Compositions and methods for regulating bacterial pathogenesis January 29, 2008
The production of a purified extracellular bacterial signal called autoinducer-2 is regulated by changes in environmental conditions associated with a shift from a free-living existence to a colonizing or pathogenic existence in a host organism. Autoinducer-2 stimulates LuxQ luminesc
7317739 Mode-locked laser using a mode-locking wavelength selective reflector January 8, 2008
In accordance with the invention, a mode-locked laser comprises an optical gain medium disposed within an optical cavity formed by a first reflector and a wavelength selective second reflector to achieve mode-locking operation. Advantageously, the wavelength reflective reflector is a
7284035 System for wireless push and pull based services October 16, 2007
The present invention relates to a method and system for providing Web content from pull and push based services running on Web content providers to mobile users. A proxy gateway connects the mobile users to the Web content providers. A prefetching module is used at the proxy gateway
7282456 Self-repair and enhancement of nanostructures by liquification under guiding conditions October 16, 2007
In accordance with the invention, the structure of a patterned nanoscale or near nanoscale device ("nanostructure") is repaired and/or enhanced by liquifying the patterned device in the presence of appropriate guiding conditions for a period of time and then permitting the device to
7244948 Miniature multinuclide detection system and methods July 17, 2007
The present invention is directed toward an apparatus and methods for detection and identification of target radionuclides and threatening radionuclides that may be present in a sample volume. One aspect of the invention provides a digital computational apparatus that determines simi
7217562 Gradient structures interfacing microfluidics and nanofluidics, methods for fabrication and uses May 15, 2007
The present invention relates to a device for interfacing nanofluidic and microfluidic components suitable for use in performing high throughput macromolecular analysis. Diffraction gradient lithography (DGL) is used to form a gradient interface between a microfluidic area and a nano
7216660 Method and device for controlling liquid flow on the surface of a microfluidic chip May 15, 2007
The invention is directed to a method and device for routing, mixing, or reacting droplets or liquid microstreams along the surface of a flat substrate. The flow of liquid microstreams or microdroplets along designated pathways is confined by chemical surface patterning. Individually
7211214 Laser assisted direct imprint lithography May 1, 2007
In accordance with the invention, features can be directly imprinted into the surface of a solid substrate. Specifically, a substrate is directly imprinted with a desired pattern by the steps of providing a mold having a molding surface to imprint the pattern, disposing the molding surfa
7208612 Crystals of LuxP and complexes thereof April 24, 2007
A crystal comprising LuxP is obtained, and a binding site for autoinducer-2 (AI-2) identified. The X-ray crystallographic data for LuxP and a LuxP-AI-2 complex is determined and used in a drug discovery method. Pharmaceutical compositions comprising ligands identified by such drug di
7200266 Method and apparatus for automated video activity analysis April 3, 2007
The invention is a new method and apparatus that can be used to detect, recognize, and analyze people or other objects in security checkpoints, public-places, parking lots, or in similar environments under surveillance to detect the presence of certain objects of interests (e.g., peo
7183099 Inhibitors of autoinducer transporters February 27, 2007
The present invention relates to the discovery of the lsr operon, the genes therein, and the polypeptides encoded by these genes. The present invention also includes strains with altered expression levels of the polypeptides encoded by the genes and the lsr operon relative to wild ty
7179534 Conductive-polymer electronic switch February 20, 2007
A switch, used as an electronic-memory element, comprising a conductive organic polymer layer sandwiched between, and in contact with, two metallic conductive elements. In an initial post-fabrication state, the organic polymer layer is relatively highly conductive, the post-fabricati
7151077 Polymersome compositions and associated methods of use December 19, 2006
The present invention relates to methods and compositions for treating subterranean formations. More particularly, the present invention relates to polymersomes, viscosifying agents that comprise polymersomes, and associated methods of use. In some embodiments, the present invention
7119356 Forming closely spaced electrodes October 10, 2006
The present invention provides an apparatus and a method of fabricating the apparatus. The apparatus comprises a substrate having a planar surface and first and second electrodes located on the planar surface. The first electrode has a top surface and a lateral surface, and the later
7049116 Engineered protein kinases which can utilize modified nucleotide triphosphate substrates May 23, 2006
Engineered protein kinases which can utilize modified nucleotide triphosphate substrates that are not as readily utilized by the wild-type forms of those enzymes, and methods of making and using them are disclosed. Modified nucleotide triphosphate substrates and methods of making and
7026461 Engineered protein kinases which can utilize nucleotide triphosphate substrates April 11, 2006
Engineered protein kinases which can utilize modified nucleotide triphosphate substrates that are not as readily utilized by the wild-type forms of those enzymes, and methods of making and using them. Modified nucleotide triphosphate substrates and methods of making and using them. M
6968022 Method and apparatus for scheduling switched multibeam antennas in a multiple access environment November 22, 2005
The invention is a switched beam beamforming method and apparatus for wireless communication receiving stations utilizing an array of antenna elements in which only a single beam is generated at any given instant and the beam is switched at a very high rate, e.g., faster than the data ra
6942986 Compositions and methods for regulating bacterial pathogenesis September 13, 2005
The production of a purified extracellular bacterial signal called autoinducer-2 is regulated by changes in environmental conditions associated with a shift from a free-living existence to a colonizing or pathogenic existence in a host organism. Autoinducer-2 stimulates LuxQ luminesc
6936435 Compositions and methods for regulating bacterial pathogenesis August 30, 2005
The production of a purified extracellular bacterial signal called autoinducer-2 is regulated by changes in environmental conditions associated with a shift from a free-living existence to a colonizing or pathogenic existence in a host organism. Autoinducer-2 stimulates LuxQ luminesc
6921653 Crystalline UDP-glycosyl transferase (MurG) and methods of use thereof July 26, 2005
The present invention relates to crystals of the Escherichia coli MurG, a membrane-associated UDP-glycosyltransferase involved in peptidoglycan biosynthesis. The present invention also relates to three-dimensional atomic coordinates of the MurG protein, three-dimensional structures of
6919770 Method and system for operating an atomic clock with reduced spin-exchange broadening of atomic July 19, 2005
The present invention relates to a method and system for using end resonances of highly spin-polarized alkali metal vapors for an atomic clock, magnetometer or other system. A left end resonance involves a transition from the quantum state of minimum spin angular momentum along the d
6915240 System and method of data reduction for improved exponential decay measurements July 5, 2005
A novel system and method for data reduction for improved exponential decay rate measurement in the present of excess low frequency noise. The system and method fit the tail of a record to a straight line wherein the straight line is extrapolated to the entire record and then subtracted
6888780 Method and system for operating an atomic clock with simultaneous locking of field and frequency May 3, 2005
The present invention provides a method and system to simultaneously use the microwave and Zeeman end resonances associated with the same sublevel of maximum (or minimum) azimuthal quantum number m to lock both the atomic clock frequency and the magnetic field to definite values. This el
6864067 Compositions and methods for regulating bacterial pathogenesis March 8, 2005
The production of a purified extracellular bacterial signal called autoinducer-2 is regulated by changes in environmental conditions associated with a shift from a free-living existence to a colonizing or pathogenic existence in a host organism. Autoinducer-2 stimulates LuxQ luminesc
6844423 Compositions and methods for regulating bacterial pathogenesis January 18, 2005
The production of a purified extracellular bacterial signal called autoinducer-2 is regulated by changes in environmental conditions associated with a shift from a free-living existence to a colonizing or pathogenic existence in a host organism. Autoinducer-2 stimulates LuxQ luminesc
6844025 Method of fabricating an organic photosensitive optoelectronic device with an exciton blocking l January 18, 2005
Organic photosensitive optoelectronic devices ("OPODs") are disclosed which include an exciton blocking layer to enhance device efficiency. Single heterostructure, stacked and wave-guide type embodiments are disclosed. Photodetector OPODs having multilayer structures and an exciton block
6824664 Electrode-less dielectrophorises for polarizable particles November 30, 2004
The present invention further provides a device for the integrated micromanipulation, amplification, and analysis of polarized particles such as DNA comprises a microchip which contains constrictions of insulating material for dielectrophoresis powered by an alternating current or direct
6790671 Optically characterizing polymers September 14, 2004
The invention relates to new systems, methods and products for analyzing polymers and in particular new systems, methods and products useful for obtaining sequence information from polymers. The invention has numerous advantages over prior art systems and methods used to obtain seque
6783932 Stabilization of triplexes by water structure-making substances August 31, 2004
The stability of a triplex in solution is enhanced by adding to the solution, either before or after formation of the triplex, an effective amount of either of the following: (a) a water structure-making substance, at an appropriately high concentration, other than an alkali or alkaline
6780890 Compounds and methods for regulating bacterial growth and pathogenesis August 24, 2004
The invention provides autoinducer-2 analogs that regulate the activity of autoinducer-2 and methods of using such analogs for regulating bacterial growth and pathogenesis.
6745336 System and method of operand value based processor optimization by detecting a condition of pre- June 1, 2004
Circuitry reduces power consumption by a microprocessor with operand-value-based clock gating. A bit detect unit detects the condition of a pre-determined number of bits of an operand. If the pre-determined number of bits are not necessary for executing the operand, a condition detec
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