Patents Assigned to Simon Fraser University
-
Publication number: 20100297059Abstract: The invention provides in part dialkoxybenzene and eugenol compounds for controlling infestation by a Lymantria dispar, and methods thereof. The compounds include a compound of Formula I: where R1 may be methyl, ethyl, propyl, n-butyl, isopentyl (3-methylbutyl) or allyl; R2 may be at positions 2, 3 or 4 and may be H, methyl, ethyl, propyl, n-butyl, isopentyl (3-methylbutyl) or allyl; and R3 may be optionally present at positions 2, 3 and 4, and is allyl; with the provisos that when R2 is at position 2, R3 if present is at position 3, or when R2 is at position 3, R3 if present is at positions 2 or 4, or when R2 is at position 4, R3 if present is at position 2; or of Formula II: where R1 may be methyl, ethyl, propyl, n-butyl, isopentyl (3-methylbutyl) or allyl; or mixtures thereof.Type: ApplicationFiled: April 7, 2010Publication date: November 25, 2010Applicant: Simon Fraser UniversityInventors: Erika Plettner, Yongmei Gong, Regine Gries
-
Publication number: 20100276944Abstract: Methods and apparatus are disclosed for harvesting energy from motion of one or more joints. Energy harvesters comprise: an energy converter for converting mechanical energy into corresponding electrical energy; one or more sensors for sensing one or more corresponding characteristics associated with motion of the one or more joints; and a controller connected to receive the one or more sensed characteristics and configured to assess, based at least in part on the one or more sensed characteristics, whether motion of the one or more joints is associated with mutualistic conditions or non-mutualistic conditions. If conditions are determined to be mutualistic, energy harvesting is engaged. If conditions ate determined to be non-mutualistic, energy harvesting is disengaged.Type: ApplicationFiled: August 10, 2006Publication date: November 4, 2010Applicant: SIMON FRASER UNIVERSITYInventors: James Maxwell Donelan, Arthur D. Kuo, Joaquin Andres Hoffer, Qingguo Li, Douglas Weber
-
Patent number: 7824920Abstract: This application relates to a process for controllably placing two or more microspots on a target substrate in close proximity to one another. The microspots may then be simultaneously irradiated and the resulting ions detected by mass spectrometry, such as time of flight mass spectrometry. In one embodiment the size and spacing of the microspots on the substrate may be controlled by using an electrodynamic balance during the deposition step. The deposition procedure ensures that at least some of the microspots are spaced-apart on the substrate a distance less than the focused output of a single laser. Simultaneous irradiation of the adjacent microspots may cause desorption plumes of the microspots to interact in a gas phase, such as by ion-molecule reactions. The microspots may be configured to improve the ionization yield of the sample material in the gas phase and/or to increase the frequency of ion-molecule collisions in the gas phase.Type: GrantFiled: February 24, 2004Date of Patent: November 2, 2010Assignee: Simon Fraser UniversityInventors: George R. Agnes, Michael J. Bogan
-
Patent number: 7794712Abstract: This application relates to the production and characterization of a mutant strain of Aspergillus fumigatus. The application also relates to a method for inhibiting siderophore biosynthesis in Aspergillus fumigatus and an assay for identifying drug candidates or other agents having potential inhibitory activity. The method may comprise, for example, the step of inhibiting an enzyme catalyzing siderophore biosynthesis, such as L-ornithine N5-oxygenase. In one embodiment the siderophore is a hydroxamate siderophore, such as N?N?N??-triacetylfusarinine C (TAF) or ferricrocin. A method of preventing or treating fungal infections in a patient is also described comprising administering to the patient an agent suitable for inhibiting fungal secretion of siderophores. The method is particularly useful for immunocompromised patients susceptible to fungal infections caused by Aspergillus fumigatus, such as pulmonary aspergillosis.Type: GrantFiled: June 20, 2005Date of Patent: September 14, 2010Assignee: Simon Fraser UniversityInventors: Margo Marie Moore, Anna Hodiah Tangen Hissen, Nga Chun Adrian Wan
-
Patent number: 7791032Abstract: The present invention provides digital imaging architectures comprising detectors coupled to readout circuitry. The readout circuitry functions in particular modes, the use of which can depend on characteristics of the input signals transferred to the readout circuitry from the detectors, or can depend on the characteristics of the output signal required from the readout circuitry. When the input signal has a particular magnitude the readout circuitry can function in a first mode in which the input signal can be amplified to a measurable level, and when the input signal has another magnitude, the readout circuitry can function in an alternate mode in which the input signal can be read out with a different or no amplification. Thus, the present invention can provide a large dynamic range of detection that can amplify sensitive input signals from a detector as well as read larger signals with little or no amplification.Type: GrantFiled: August 12, 2004Date of Patent: September 7, 2010Assignee: Simon Fraser UniversityInventor: Karim S. Karim
-
Patent number: 7785897Abstract: A method and apparatus for producing a discrete particle for subsequent analysis (such as mass spectrometry) or manipulation is disclosed. A discrete particle is generated by a particle generator. A net charge is induced onto the particle by an induction electrode. The particle is delivered to a levitation device where it is then electrodynamically levitated. If the particle is a droplet, desolvation will occur, leading to Coloumbic fissioning of the droplet into smaller droplets. The movement of the levitated droplet(s) can be manipulated by an electrode assembly. The droplet(s), and the charge thereon, can be delivered to a mass spectrometer in one aspect of the invention, providing an ion source for mass spectrometry without the detrimental space charge effects of electrospray ionization techniques.Type: GrantFiled: October 23, 2001Date of Patent: August 31, 2010Assignee: Simon Fraser UniversityInventors: George Agnes, Xiao Feng, Michael Bogan
-
Patent number: 7773659Abstract: Disclosed herein is an Ultra WideBand (UWB) M-ary Code Shift Keying (MCSK)/Binary Pulse Position Modulation (BPPM) wireless communication system and method. The system includes a transmitter and a receiver. The transmitter selects a specific TH code using MCSK according to an additional data stream, performs BPPM on a desired signal according to the selected TH code, and transmits the modulated signal via a channel. The receiver receives the signal transmitted from the transmitter via the channel, and estimates the transmitted signal, which is transmitted from the transmitter, through detection of a Maximum Likelihood (ML) sequence.Type: GrantFiled: June 20, 2005Date of Patent: August 10, 2010Assignees: INHA-Industry Partnership Institute, Simon Fraser UniversityInventors: Dong In Kim, Serhat Erkucuk, Kyung Sup Kwak
-
Publication number: 20100190865Abstract: The invention provides in part dialkoxybenzene and eugenol compounds for controlling infestation by a Lymantria dispar, and methods thereof. The compounds include a compound of Formula I: where R1 may be methyl, ethyl, propyl, n-butyl, isopentyl (3-methylbutyl) or allyl; R2 may be at positions 2, 3 or 4 and may be H, methyl, ethyl, propyl, n-butyl, isopentyl (3-methylbutyl) or allyl; and R3 may be optionally present at positions 2, 3 and 4, and is allyl; with the provisos that when R2 is at position 2, R3 if present is at position 3, or when R2 is at to position 3, R3 if present is at positions 2 or 4, or when R2 is at position 4, R3 if present is at position 2; or of Formula II: where R1 may be methyl, ethyl, propyl, n-butyl, isopentyl (3-methylbutyl) or allyl; or mixtures thereof.Type: ApplicationFiled: November 19, 2009Publication date: July 29, 2010Applicant: Simon Fraser UniversityInventors: Erika Plettner, Yongmei Gong, Regine Gries
-
Publication number: 20100160451Abstract: The invention provides in part dialkoxybenzene compounds for controlling infestation by a Trichoplusia ni, and methods thereof. The compounds include a compound of Formula I: where R1 may be methyl, ethyl, propyl, n-butyl, isopentyl(3-methylbutyl) or allyl; R2 may be at positions 2, 3 or 4 and may be H, methyl, ethyl, propyl, n-butyl, isopentyl(3-methylbutyl) or allyl; and R3 may be optionally present at positions 2, 3 and 4, and is allyl; except that when R2 is at position 2, R3 if present is at position 3, and when R2 is at position 3, R3 if present is at positions 2 or 4, and when R2 is at position 4, R3 if present is at position 2, and when R2 is at position 4 and R3, if present, has reacted with an OH group at position 1 in a Markovnikov sense, then R3 becomes R4, a dihydrofuran.Type: ApplicationFiled: November 19, 2009Publication date: June 24, 2010Applicants: Simon Fraser University, The University of British ColumbiaInventors: Erika Plettner, Murray Bruce Isman
-
Patent number: 7734537Abstract: A computer-implemented method includes determining, in respect of a loan secured by an asset, a present value of a right of a borrower of the loan to choose during a term of the loan to require an entity to pay the loan in full on the borrower's behalf in exchange for the asset, in response to at least one prediction of whether the borrower will exercise the right. The asset may include realty and the loan may include a mortgage. A further method includes granting, to a borrower of a loan secured by an asset, a right to choose during a term of the loan to require an entity to: (i) pay the loan in full on behalf of the borrower, and (ii) receive the asset in full satisfaction therefor; and receiving valuable consideration from the borrower in exchange for the granting of the right.Type: GrantFiled: November 16, 2006Date of Patent: June 8, 2010Assignee: Simon Fraser UniversityInventors: Andrey Dimitrov Pavlov, Susan Melinda Wachter, Peter Ian Ekstein
-
Publication number: 20100041562Abstract: Microarray devices fabricated using microfluidic reagent distribution techniques are provided. As described herein, the invention encompasses microfluidic microarray assemblies (MMA) and subassemblies and methods for their manufacture and use. In one embodiment first and second channel plates are provided which may be sealed to a test chip in consecutive steps. Each channel plate includes microfluidic channels configured in a predetermined reagent distribution pattern. For example, the first channel plate may have a radial (linear) reagent distribution pattern and the second channel plate may have a spiral (curved) reagent distribution pattern, or vice versa. In one embodiment the first channel plate is connected to the test chip and at least one first reagent is distributed on the test chip in a first predetermined reagent pattern. The first reagent is then immobilized on the test chip.Type: ApplicationFiled: December 12, 2005Publication date: February 18, 2010Applicant: SIMON FRASER UNIVERSITYInventors: Paul Chi Hang Li, Xing Yue Peng, Hua Zhong Yu, Meenakshinathan Parameswaren, Hong Chen, Wa Lok Chou
-
Publication number: 20100042023Abstract: A hand rehabilitation device includes a hand support assembly and a drive mechanism. The hand support assembly being movable to flex and extend the metacarpophalangeal and proximal interphalangeal joints of a user's hand independently.Type: ApplicationFiled: August 11, 2009Publication date: February 18, 2010Applicant: SIMON FRASER UNIVERSITYInventors: Edward Jung Wook PARK, Benjamin John BIRCH, Clifford Edmund HASLAM, Nikolai DECHEV, Imtehaze HEERAH
-
Publication number: 20100036451Abstract: Electrode structures for transvascular nerve stimulation combine electrodes with an electrically-insulating backing layer. The backing layer increases the electrical impedance of electrical paths through blood in a lumen of a blood vessel and consequently increases the flow of electrical current through surrounding tissues. The electrode structures may be applied to stimulate nerves such as the phrenic, vagus, trigeminal, obturator or other nerves.Type: ApplicationFiled: January 29, 2008Publication date: February 11, 2010Applicant: SIMON FRASER UNIVERSITYInventor: Joaquin Andres Hoffer
-
Patent number: 7660230Abstract: A novel transceiver structure is proposed to increase the achievable data rate for ultra wideband transmitted reference (UWB-TR) systems. For every Ns pulse pairs during one symbol transmission, the data pulses are weighted by one of the M-ary orthogonal sequences, thus carrying additional log2 M-bit information. Furthermore, by utilizing a pair of balanced matched filters before the cross correlator, the minimum separation between the reference and data pulses is significantly reduced without causing any inter-pulse interference (IPI), which in turn reduces the minimum required frame length in order to avoid the inter-frame interference (IFI). As a result, the invented TR system can achieve higher data rates than the conventional TR system, while maintaining superior bit-error-rate (BER) performance even with lower transmit power.Type: GrantFiled: June 23, 2006Date of Patent: February 9, 2010Assignees: Simon Fraser University, Inha-Industry Partnership InstituteInventors: Dong In Kim, Tao Jia, Kyung Sup Kwak
-
Publication number: 20090281190Abstract: The invention relates to a composition and procedure to attract and kill insect pests. An insecticidal attract-and-kill composition comprising: an organic biodegradable matrix component from natural sources; an organic biodegradable ultraviolet light absorbent matrix component from natural sources; a biodegradable insecticidal or acaricidal compound; and a pheromonal or kairomonal attractant.Type: ApplicationFiled: April 13, 2006Publication date: November 12, 2009Applicant: Simon Fraser UniversityInventors: Grigori Khaskin, Regine Gries, Emma Rozenberg, Hassan Daroogheh, Lucian Mircioiu
-
Publication number: 20090242856Abstract: This application relates to metal-containing coordination polymers having high birefringent values. For example, polymers having birefringent values within the range of 0.07 to 0.45 are described. The polymers may comprise units having the formula M(L)X[M?(Z)Y]N, wherein M and M? are the same or different metals capable of forming a coordinate complex with the Z moiety; L is a ligand; Z is selected from the group consisting of halides, pseudohalides, thiolates, alkoxides and amides; X is between 0-12; Y is between 2-9; and N is between 1-5. In particular embodiments of the invention L may be a highly anisotropic organic ligand, such as terpyridine, and Z may be a pseudohalide, such as CN. The invention also includes methods for synthesizing the coordination polymers and use of the polymers in birefringent materials and devices. In one embodiment the polymers may be processible into thin films.Type: ApplicationFiled: February 9, 2007Publication date: October 1, 2009Applicant: SIMON FRASER UNIVERSITYInventors: Daniel Bernard Leznoff, Michael Iacov Katz
-
Publication number: 20090242882Abstract: Microstructures can be formed as patterned layers on a substrate and then erecting the microstructures out of the plane of the substrate. The microstructures may be formed over circuits in the substrate. In some embodiments the patterned layer provides resiliently-flexible members such as cantilevers or springs that can be buckled to permit an edge defined by the patterned layer to engage a surface of the substrate. In some embodiments deformation of the resiliently-flexible members results the edge being forced against the substrate. Such microstructures may be applied in a wide range of applications including supporting optical elements, sensors, antennas or the like out of the plane of a substrate. Examples of accelerometer structures are described.Type: ApplicationFiled: March 27, 2009Publication date: October 1, 2009Applicant: SIMON FRASER UNIVERSITYInventors: Albert M. Leung, Meenakshinathan Parameswaran, See-Ho Tsang
-
Publication number: 20090130768Abstract: This application relates to vaprochromic coordination polymers useful for analyte detection. The vapochromism may be observed by visible color changes, changes in luminescence, and/or spectroscopic changes in the infrared (IR) signature. One or more of the above chromatic changes may be relied upon to identify a specific analyte, such as a volatile organic compound or a gas. The chromatic changes may be reversible to allow for successive analysis of different analytes using the same polymer. The polymer has the general formula MW[M?X(Z)Y]N wherein M and M? are the same or different metals capable of forming a coordinate complex with the Z moiety; Z is selected from the group consisting of halides, pseudohalides, thiolates, alkoxides and amides; W is between 1-6; X and Y are between 1-9; and N is between 1-5. Optionally, an organic ligand may be bound to M. In alternative embodiments of the invention M may be a transition metal, such as Cu and Zn.Type: ApplicationFiled: July 8, 2008Publication date: May 21, 2009Applicant: SIMON FRASER UNIVERSITYInventors: Julie LEFEBVRE, Michael Iacov KATZ, Daniel B. LEZNOFF
-
Publication number: 20090076294Abstract: This application is concerned with the controlled nucleation of solutes (i.e. dissolved solids) from solution. It has been found that the energy barrier for dissolved solids to nucleate is affected by the surface charge density of the reaction vessel (and hence the mass-to-charge ratio of vessel). The reaction vessel may, for example, comprise a levitated droplet of the solution having an “excess net charge”. That is, ions present in the vessel of a single polarity are in excess of the counterions of opposite polarity. An increase in the surface charge density of the vessel (and hence a reduction in the mass-to-charge ratio of the vessel) causes the barrier for nucleation to decrease. These findings can be exploited using instruments commonly used in wall-less sample preparation to elicit selective control over the induction of nucleation and subsequent crystallization of target solutes of interest in the condensed phase.Type: ApplicationFiled: February 9, 2005Publication date: March 19, 2009Applicant: Simon Fraser UniversityInventors: George R. Agnes, Michael J. Bogan, Samuel F.W. Bakhoum
-
Publication number: 20080293160Abstract: The electrical conductivity of DNA and other oligonucleotide constructs is dependent on its conformational state. Such a dependence may be harnessed for the electronic sensing of external analytes, for instance, adenosine or thrombin. Such a DNA sensor incorporates an analyte receptor, whose altered conformation in the presence of bound analyte switches the conformation, and hence, the conductive path between two oligonucleotide stems, such as double-helical DNA. Two distinct designs for such sensors are described that permit significant electrical conduction through a first or “detector” double-helical stem only in the presence of the bound analyte. In the first design, current flows through the analyte receptor itself whereas, in the second, current flows in a path adjacent to the receptor.Type: ApplicationFiled: April 14, 2008Publication date: November 27, 2008Applicant: SIMON FRASER UNIVERSITYInventors: Dipankar SEN, Richard P. FAHLMAN, Yu Chuan HUANG, Hua Zhong YU, Bixia GE