Patents Assigned to University of Massachusetts at Amherst
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Publication number: 20230342348Abstract: A method for processing formulae includes encoding a formula by: training, with a server, a model by using a machine learning algorithm with a data set that includes a plurality of formulae; transforming, with a processor, a first formula into a tree format using the trained model; converting, with the processor, the tree format of the first formula into a plurality of lists; and encoding, with the processor, the plurality of lists into a fixed dimension vector by leveraging a stacked attention module; and generating one or more formula candidates by: obtaining, with the processor, input information; and generating, with the processor, one or more second formula candidates based on input information by using the stacked attention module with a tree beam search algorithm.Type: ApplicationFiled: April 21, 2023Publication date: October 26, 2023Applicants: William Marsh Rice University, University of Massachusetts, AmherstInventors: Zichao Wang, Shiting Lan, Richard G. Baraniuk
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Patent number: 11498062Abstract: Methods and phosphorus-containing solid catalysts for catalyzing dehydration of cyclic ethers (e.g., furans, such as 2,5-dimethylfuran) and alcohols (e.g., ethanol and isopropanol). The alcohols and cyclic ethers may be derived from biomass. One example includes a tandem Diels-Alder cycloaddition and dehydration of biomass-derived 2,5-dimethyl-furan and ethylene to renewable p-xylene. The phosphorus-containing solid catalysts are also active and selective for dehydration of alcohols to alkenes.Type: GrantFiled: September 29, 2017Date of Patent: November 15, 2022Assignees: Regents of the University of Minnesota, University of Massachusetts Amherst, University of DelawareInventors: Hong Je Cho, Wei Fan, Michael Tsapatsis, Paul J. Dauenhauer, Limin Ren, Raul Lobo
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Publication number: 20150155538Abstract: An electrical insulation layer including microparticles and having a mesoporous structure; and a battery device including a cathode, an anode, an electrical insulation layer including microparticles and having a mesoporous structure, the electrical insulation layer being arranged between the anode and the cathode, and an ion conductive composition.Type: ApplicationFiled: December 1, 2014Publication date: June 4, 2015Applicants: SEKISUI CHEMICAL CO., LTD., UNIVERSITY OF MASSACHUSETTS AMHERSTInventors: Yuying TANG, James WATKINS, Kenichi SHINMEI, Rasika DASANAYAKE ALUTHGE, Susumu KOIZUMI, Masashi KANOH
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Publication number: 20120154206Abstract: A method for calibrating a phased-array antenna that involves transmitting a signal from a transmitting element, and sequentially receiving the transmitted signal at two receiving elements each spaced a first distance from the transmitting element. This step is then repeated one or more times, but transmitting from a different transmitting element in each repetition of the step, until each element being calibrated has received at least one transmission. Then, the first distance is changed to a second distance, and the steps are repeated one or more times to gather additional measurements. These measurements allow the determination from the received signals of two separate element mutual coupling ratios, one ratio for one subset of the elements being calibrated and the other for a second subset comprising the remaining elements being calibrated.Type: ApplicationFiled: December 15, 2010Publication date: June 21, 2012Applicant: University of Massachusetts AmherstInventor: Rafael H. Medina Sanchez
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Publication number: 20100023464Abstract: A method of parameter adaptation is used to modify the parameters of a model to improve model performance. The model separately estimates the contribution of each model parameter to the prediction error. It achieves this by transforming to the time-scale plane the vectors of output sensitivities with respect to model parameters and then identifying the regions within the time-scale plane at which the dynamic effect of individual model parameters is dominant on the output. The method then attributes the prediction error in these regions to the deviation of a single parameter from its true value as the basis of estimating individual parametric errors. The proposed Signature Isolation Method (PARSIM) then uses these estimates to adapt individual model parameters independently of the others, implementing, in effect, concurrent adaptation of individual parameters by the Newton-Raphson method in the time-scale plane.Type: ApplicationFiled: July 24, 2008Publication date: January 28, 2010Applicant: University of Massachusetts AmherstInventors: Kourosh Danai, James McCusker
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Patent number: 7254633Abstract: A method for probabilistic packet marking in a network includes encoding Internet Protocol (IP) traceback information using b bits located in a packet header. The IP traceback information includes information on an IP traceback path back to a source system and a count of each type of packet. The method also includes forming the IP traceback path as packets are received by a destination system and completing the traceback path after a determined number of packets are received by the destination system.Type: GrantFiled: February 4, 2003Date of Patent: August 7, 2007Assignee: University of Massachusetts AmherstInventor: Micah Adler
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Patent number: 7085236Abstract: A method of regulating queuing delay in a network routing device independent of TCP loading is provided including receiving data packets, monitoring the data packets using token buckets and a Proportional and Integral (P+I) Active Queue Management (AQM) scheme, marking selected data packets falling within a profile, and adjusting flow preference of the monitored packets.Type: GrantFiled: May 20, 2002Date of Patent: August 1, 2006Assignee: University of Massachusetts, AmherstInventors: Salomon Oldak, Wei-Bo Gong, Christopher V. Hollot, Don Towsley, Vishal Misra, Yossi Chait
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Publication number: 20050108785Abstract: An improved method of nuclear transfer involving the transplantation of donor differentiated cell nuclei into enucleated oocytes of the same species as the donor cell is provided. The resultant nuclear transfer units are useful for multiplication of genotypes and transgenic genotypes by the production of fetuses and offspring, and for production of isogenic CICM cells, including human isogenic embryonic or stem cells. Production of genetically engineered or transgenic mammalian embryos, fetuses and offspring is facilitated by the present method since the differentiated cell source of the donor nuclei can be genetically modified and clonally propagated.Type: ApplicationFiled: September 2, 2004Publication date: May 19, 2005Applicant: University of Massachusetts, Amherst CampusInventors: Steven Stice, Jose Cibelli, James Robl, Paul Golueke, F. de Leon, D. Jerry
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Publication number: 20020010949Abstract: An improved method of nuclear transfer involving the transplantation of donor differentiated cell nuclei into enucleated oocytes of the same species as the donor cell is provided. The resultant nuclear transfer units are useful for multiplication of genotypes and transgenic genotypes by the production of fetuses and offspring, and for production of isogenic CICM cells, including human isogenic embryonic or stem cells. Production of genetically engineered or transgenic mammalian embryos, fetuses and offspring is facilitated by the present method since the differentiated cell source of the donor nuclei can be genetically modified and clonally propagated.Type: ApplicationFiled: April 10, 2001Publication date: January 24, 2002Applicant: University of Massachusetts, Amherst CampusInventors: Steven L. Stice, Jose Cibelli, James Robl, Paul Golueke, F. Abel Ponce de Leon, D. Joseph Jerry
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Patent number: 6235970Abstract: An improved method of nuclear transfer involving the transplantation of donor differentiated cell nuclei into enucleated oocytes of the same species as the donor cell is provided. The resultant nuclear transfer units are useful for multiplication of genotypes and transgenic genotypes by the production of fetuses and offspring, and for production of isogenic CICM cells, including human isogenic embryonic or stem cells. Production of genetically engineered or transgenic mammalian embryos, fetuses and offspring is facilitated by the present method since the differentiated cell source of the donor nuclei can be genetically modified and clonally propagated.Type: GrantFiled: September 22, 1997Date of Patent: May 22, 2001Assignee: University of Massachusetts, Amherst CampusInventors: Steven L. Stice, Jose Cibelli, James Robl, Paul Golueke, F. Abel Ponce de Leon, D. Joseph Jerry
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Patent number: 5389286Abstract: Random and block copolyesters which are liquid crystalline can be formed containing: (a) alkoxy-substituted para-phenylene terephthalate groups (i.e., derived from an analogously substituted hydroquinone reagent); and (b) alkylene-terephthalate groups (e.g., where the alkylene moiety contains 2 to 10 carbon atoms).Type: GrantFiled: October 8, 1992Date of Patent: February 14, 1995Assignee: University of Massachusetts at AmherstInventors: Ashok Tendolkar, Sridevi Narayan, Simon W. Kantor, Robert W. Lenz
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Patent number: 5352767Abstract: Novel and previously contra-indicated alpha-olefin/carbon monoxide alternating copolymers are disclosed, together with polymerization methods and novel catalysts therefor.Type: GrantFiled: January 13, 1994Date of Patent: October 4, 1994Assignee: University of Massachusetts - AmherstInventor: James C. W. Chien
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Patent number: 5232778Abstract: Polyester fibers comprising a poly(alkylene) terephthalate matrix containing either random or block copolyesters which are liquid crystalline and which contain: (a) alkoxy-substituted para-phenylene terephthalate groups (i.e., derived from an analogously substituted hydroquinone reagent); and (b) alkylene-terephthalate groups (e.g., where the alkylene moiety contains 2 to 10 carbon atoms).Type: GrantFiled: October 8, 1992Date of Patent: August 3, 1993Assignee: University of Massachusetts at AmherstInventors: Richard J. Farris, Scott L. Joslin, Reiner Giesa
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Patent number: 5157103Abstract: A copolymer of (1) a triad aromatic ester mesogenic unit containing a flexible polyalkylene spacer in the main chain thereof and (2) a polyester is disclosed.Type: GrantFiled: January 30, 1991Date of Patent: October 20, 1992Assignee: University of Massachusetts at AmherstInventors: Simon W. Kantor, Robert W. Lenz, William J. Ward
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Patent number: 5149757Abstract: Liquid crystalline polyesters of the aromatic triad type are formed by reaction of an alkylene bis(acetoxybenzoate) monomer and an aromatic dicarboxylic acid monomer with removal of acetic acid by-product therefrom.Type: GrantFiled: May 1, 1990Date of Patent: September 22, 1992Assignee: University of Massachusetts at AmherstInventors: Simon W. Kantor, Robert W. Lenz, William J. Ward
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Patent number: 5032669Abstract: Novel liquid crystal polyesters can be formed by reaction of bis(hydroxyalkoxy)biphenyls (including the novel bis(2-hydroxybutoxy)biphenyl) with terephthaloyl chloride.Type: GrantFiled: May 1, 1990Date of Patent: July 16, 1991Assignee: University of Massachusetts at AmherstInventors: Simon W. Kantor, Robert W. Lenz, William J. Ward