Patents Assigned to The University of Texas System Board of Regents
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Publication number: 20040256764Abstract: The present invention provides a method to reduce adhesion between a conformable region on a substrate and a pattern of a mold, which selectively comes into contact with the conformable region. The method features forming a conformable material on the substrate and contacting the conformable material with the surface. A conditioned layer is formed from the conformable material. The conditioned layer has first and second sub-portions, with the first sub-portion being solidified and the second sub-portion having a first affinity for the surface and a second affinity for the first sub-portion. The first affinity is greater than the second affinity. In this fashion, upon separation of the mold from the conditioned layer, a subset of the second sub-portion maintains contact with the mold, thereby reducing the probability that a pattern formed in the conditioned layer becomes compromised. These and other embodiments are described herein.Type: ApplicationFiled: June 17, 2003Publication date: December 23, 2004Applicants: University of Texas System Board of Regents, MOLECULAR IMPRINTS, INC.Inventors: Byung Jin Choi, Frank Y. Xu, Nicholas A. Stacy, Van Nguyen Truskett, Michael P.C. Watts
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Publication number: 20040149687Abstract: Processes and associated devices for high precision positioning of a template an substrate during imprint lithography includes a calibration system with a course calibration stage and a fine orientation stage capable of maintaining a uniform gap between the template and substrate. The fine orientation stage includes a pair of flexure members having flexure joints for motion about a pivot point intersected by first and second orientation axes. Actuators lengthen or shorten to expand or contract the flexure members. Separation of the template is achieved using a peel-and-pull method that avoids destruction of imprinted features from the substrate.Type: ApplicationFiled: July 10, 2003Publication date: August 5, 2004Applicant: University of Texas System, Board of Regents, UT SystemInventors: Byung Jin Choi, Sidlgata V. Sreenivasan, Stephen C. Johnson
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Publication number: 20040141168Abstract: A system of determining and correcting alignment during imprint lithography process is described. During an imprint lithographic process the template may be aligned with the substrate by the use of alignment marks disposed on both the template and substrate. The alignment may be determined and corrected for before the layer is processed.Type: ApplicationFiled: December 29, 2003Publication date: July 22, 2004Applicant: The University of Texas System Board of Regents, UT SystemInventors: S. V. Sreenivasan, Byung J. Choi, Matthew Colburn, Todd Bailey
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Publication number: 20040141163Abstract: Described are imprint lithography templates, methods of forming and using the templates, and a template holder device. An imprint lithography template may include a body with a plurality of recesses on a surface of the body. The body may be of a material that is substantially transparent to activating light. At least a portion of the plurality of recesses may define features having a feature size less than about 250 nm. A template may be formed by obtaining a material that is substantially transparent to activating light and forming a plurality or recesses on a surface of the template. In some embodiments, a template may further include at least one alignment mark. In some embodiments, a template may further include a gap sensing area. An imprint lithography template may be used to form an imprinted layer in a light curable liquid disposed on a substrate. During use, the template may be disposed within a template holder.Type: ApplicationFiled: December 29, 2003Publication date: July 22, 2004Applicant: The University of Texas System, Board of Regents, UT SystemInventors: Todd Bailey, Byung J. Choi, Matthew E. Colburn, S. V. Sreenivasan, C. Grant Willson, John Ekerdt
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Publication number: 20040086793Abstract: A method of determining and correcting alignment during imprint lithography process is described. During an imprint lithographic process the template may be aligned with the substrate by the use of alignment marks disposed on both the template and substrate. The alignment may be determined and corrected for before the layer is processed.Type: ApplicationFiled: May 27, 2003Publication date: May 6, 2004Applicant: University of Texas System Board of Regents, UT SystemInventors: S. V. Sreenivasan, Byung J. Choi, Matthew Colbum, Todd Bailey
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Publication number: 20040053146Abstract: A method of determining and correcting alignment during imprint lithography process is described. During an imprint lithographic process the template may be aligned with the substrate by the use of alignment marks disposed on both the template and substrate. The alignment may be determined and corrected for before the layer is processed.Type: ApplicationFiled: May 27, 2003Publication date: March 18, 2004Applicant: University of Texas System Board of Regents, UT SystemInventors: S.V. Sreenivasan, Byung J. Choi, Matthew Colburn, Todd Bailey
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Publication number: 20030175766Abstract: Method and compositions are provided for the determination of telomere length and telomerase activity, as well as the ability to inhibit telomerase activity in the treatment of proliferative diseases. Particularly, primers are elongated under conditions which minimize interference from other genomic sequences, so as to obtain accurate determinations of telomeric length or telomerase activity. In addition, compositions are provided for intracellular inhibition of telomerase activity.Type: ApplicationFiled: December 18, 2002Publication date: September 18, 2003Applicant: University of Texas System Board of RegentsInventors: Michael D. West, Jerry Shay, Woodring Wright
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Publication number: 20030148732Abstract: A method for providing wireless transmission diversity wherein an error correcting codeword is divided into first and second segments at first and second transmitting units. The first segments are transmitted from each of the first and second transmitting units and received at the first and second transmitting units, respectively. The received first segments are decoded and, responsive to the decoding, transmission of a second segment is made from each of the first and second transmitting units.Type: ApplicationFiled: February 7, 2003Publication date: August 7, 2003Applicant: The University of Texas System Board of RegentsInventors: Todd E. Hunter, Aria Nosratinia
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Patent number: 6359158Abstract: The present invention includes 16-HETE analogs which are agonists and antagonists of 16-HETE. The compositions may be formulated in pharmaceutically acceptable formulations. The invention also includes methods and products for inhibiting neutrophil adhesion and neutrophil aggregation using the 16-HETE agonists. One method of the invention involves the administration of a 16-HETE agonist in combination with a thrombolytic agent to a patient suffering from thromboembolic stroke.Type: GrantFiled: May 14, 1999Date of Patent: March 19, 2002Assignees: University of Vermont and State Agricultural College, The University of Texas System Board of Regents, New York Medical CollegeInventors: John R. Falck, Martin M. Bednar, Cordell E. Gross, Michael Balazy
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Patent number: 6337472Abstract: A filter-less imaging microscope and method for analyzing samples on a slide at multiple wavelengths of light comprising, a microscope (12), a light dispersive element (28) positioned to receive images from the microscope (12) at multiple wavelengths, the light dispersive element (28) producing an array of light from the image and a camera (30) positioned to detect the light array produced by the light dispersive element (28), wherein the camera (30) detects the light array dispersed by the light dispersive element (28) at multiple wavelengths, is disclosed. The camera (30) can detect the entire spectrum of light produced by the light dispersive element (28).Type: GrantFiled: October 19, 1998Date of Patent: January 8, 2002Assignee: The University of Texas System Board of RegentsInventors: Harold R. Garner, Roger A. Schultz
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Patent number: 6329025Abstract: The present invention provides a method for depositing powder particles on a substrate. The method comprises forming a planar plasma armature, accelerating the plasma armature, accelerating a column of gas with the plasma armature; and accelerating the powder particles with the column of gas. The present invention provides for a railgun, comprising first and second conducting rails, and first and second insulating rails. The insulating and conducting rails form a bore of the railgun. The first and second conducting rails are separated by the insulating rails. At least one of the rails has a port in the wall thereof, the port is adapted to introducing powder particles into the bore.Type: GrantFiled: June 10, 1998Date of Patent: December 11, 2001Assignee: University of Texas System Board of RegentsInventors: James L. Bacon, Darwin G. Davis, Robert L. Sledge, Robert J. Polizzi, John R. Uglum, Jr., William F. Weldon, Raymond C. Zowarka
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Patent number: 6265539Abstract: An active peptide consisting essentially of 7 to about 30 residue and having a sequence that corresponds to a conserved domain of an HIV protein is disclosed, as is a multimer containing that peptide, an aqueous composition containing the multimer and methods of using and making the same. The aqueous composition containing an immunologically effective amount of an active peptide multimer, when introduced into an immunocompetent host animal in an immunologically effective amount, is capable of inducing cellular immunity against the native HIV protein to which the active peptide of the multimer corresponds in sequence, but is not capable of inducing production of antibodies that immunoreact with that native HIV protein.Type: GrantFiled: February 13, 1992Date of Patent: July 24, 2001Assignee: The University of Texas System The Board of RegentsInventor: Ralph B. Arlinghaus
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Patent number: 6261535Abstract: The present invention relates generally to methods and compositions for targeting the vasculature of solid tumors using immunological- and growth factor-based reagents. In particular aspects, antibodies carrying diagnostic or therapeutic agents are targeted to the vasculature of solid tumor masses through recognition of tumor vasculature-associated antigens, such as, for example, through endoglin binding, or through the specific induction of endothelial cell surface antigens on vascular endothelial cells in solid tumors.Type: GrantFiled: December 8, 1998Date of Patent: July 17, 2001Assignee: The University of Texas System Board of RegentsInventors: Philip E. Thorpe, Francis J. Burrows
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Patent number: 6194206Abstract: Method and compositions are provided for the determination of telomere length and telomerase activity, as well as the ability to inhibit telomerase activity in the treatment of proliferative diseases. Particularly, primers are elongated under conditions which minimize interference from other genomic sequences, so as to obtain accurate determinations of telomeric length or telomerase activity. In addition, compositions are provided for intracellular inhibition of telomerase activity.Type: GrantFiled: December 24, 1997Date of Patent: February 27, 2001Assignee: University of Texas System Board of RegentsInventors: Michael D. West, Jerry Shay, Woodring Wright
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Patent number: 6165737Abstract: The invention provides methods and compositions relating to DNA Fragmentation Factor (DFF) polypeptides and related nucleic acids. More particularly, the present invention provides the sequence for the active subunit of DFF. The polylpeptides may be produced recombinantly from host cells transformed from the disclosed DFF encoding nucleic acids or purified from human cells. The invention provides isolated DFF hybridization probes and primers capable of specifically hybridization with the disclosed DFF genes, DFF-specific binding agents such as specific antibodies, and methods of making and using the subject compositions.Type: GrantFiled: April 16, 1998Date of Patent: December 26, 2000Assignee: The University of Texas System Board of RegentsInventors: Xiaodong Wang, Xuesong Liu
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Patent number: 6133416Abstract: The present invention involves the identification of a factor or factors that are anti-proliferative and can be used in the treatment of cancers and other hyperproliferative disease states. The factor or factors are induced from cells follow contact of the cells with viral or plasmid expression vectors. One factor is between about 3 kDa and 300 kDa in size, while another is less than about 3 kDa in size. Both are heat stable and is resistant to both protease and nuclease treatment. Methods for purification and use of the factor also are disclosed.Type: GrantFiled: August 22, 1997Date of Patent: October 17, 2000Assignee: The University of Texas System Board of RegentsInventors: Deborah R. Wilson, Mary Lapadat-Tapolsky, Therese M. Timmons, Julia A. Lee, Brian D. Almond, Jack A. Roth
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Patent number: 6077515Abstract: This invention relates to flagella-less strains of Borrelia and to novel methods for use of the microorganisms as vaccines and in diagnostic assays. Although a preferred embodiment of the invention is directed to Borrelia burgdorferi, the present invention encompasses flagella-less strains of other microorganisms belonging to the genus Borrelia. Accordingly, with the aid of the disclosure, flagella-less mutants of other Borrelia species, e.g., B. coriacei, which causes epidemic bovine abortion, B. anserina, which causes avian spirochetosis, and B. recurrentis and other Borrelia species causative of relapsing fever, such as Borrelia hermsii, Borrelia turicatae, Borrelia duttoni, Borrelia persica, and Borrelia hispanica, can be prepared and used in accordance with the present invention and are within the scope of the invention.Type: GrantFiled: August 13, 1996Date of Patent: June 20, 2000Assignee: The University of Texas System, Board of RegentsInventors: Alan G. Barbour, Virgilio G. Bundoc, Adriadna Sadziene
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Patent number: 6064997Abstract: A family of novel multi-layer discrete-time neural net controllers is presented for the control of an multi-input multi-output (MIMO) dynamical system. No learning phase is needed. The structure of the neural net (NN) controller is derived using a filtered error/passivity approach. For guaranteed stability, the upper bound on the constant learning rate parameter for the delta rule employed in standard back propagation is shown to decrease with the number of hidden-layer neurons so that learning must slow down. This major drawback is shown to be easily overcome by using a projection algorithm in each layer. The notion of persistency of excitation for multilayer NN is defined and explored. New on-line improved tuning algorithms for discrete-time systems are derived, which are similar to e-modification for the case of continuous-time systems, that include a modification to the learning rate parameter plus a correction term. These algorithms guarantee tracking as well as bounded NN weights.Type: GrantFiled: March 19, 1997Date of Patent: May 16, 2000Assignee: University of Texas System, The Board of RegentsInventors: Sarangapani Jagannathan, Frank Lewis
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Patent number: 6048954Abstract: The development of polymer binder compositions that provide novel binders for high temperature inorganic particulates, especially metal and ceramic particulates is described. These materials are especially useful in a laser beam sintering process known as SLS.TM. that forms accurately shaped high strength green objects. The new binders may be thermally removed in post-shaping operations without significant residual ash. The resulting structures contain only metal, ceramic, or metal ceramic materials. The inventive methods developed for producing the new polymeric binder materials are based in part on using emulsion forms of selected polymers at controlled low molecular weights and high melt flow. An important aspect of the process is the semi-batch addition of selected chain transfer agents to the reacting emulsion. This optimizes coating characteristics of the polymer binder and results in high part strengths of the prototype parts produced in the SLS.TM. process.Type: GrantFiled: June 24, 1997Date of Patent: April 11, 2000Assignee: The University of Texas System Board of RegentsInventors: Joel W. Barlow, Neal K. Vail
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Patent number: 5965158Abstract: A method is disclosed for preparing a stable preliposomal powder which, when reconstituted with water or saline solution, forms a suspension of liposomes containing a polyene drug, such as nystatin. The method involves the steps of combining at least one phospholipid with a first organic solvent to form a first solution, adding a clarifying amount of water to the first solution, combining a polyene with a second organic solvent to form a second solution, combining the first and second solutions to produce a substantially clear combined solution, and then removing the organic solvents, leaving a powder.Type: GrantFiled: November 26, 1997Date of Patent: October 12, 1999Assignees: The University of Texas System & Board of Regents, Aronex Pharmaceuticals, Inc.Inventors: Robert P. Link, Reeta Mehta, Gabriel Lopez-Berestein