Patents by Inventor Thomas E. Cowan
Thomas E. Cowan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10051719Abstract: In particular embodiments, the present disclosure provides targets including a metal layer and defining a hollow inner surface. The hollow inner surface has an internal apex. The distance between at least two opposing points of the internal apex is less than about 15 ?m. In particular examples, the distance is less than about 1 ?m. Particular implementations of the targets are free standing. The targets have a number of disclosed shaped, including cones, pyramids, hemispheres, and capped structures. The present disclosure also provides arrays of such targets. Also provided are methods of forming targets, such as the disclosed targets, using lithographic techniques, such as photolithographic techniques. In particular examples, a target mold is formed from a silicon wafer and then one or more sides of the mold are coated with a target material, such as one or more metals.Type: GrantFiled: April 29, 2016Date of Patent: August 14, 2018Assignee: Board of Regents of the Nevada System of Higher Education, on Behalf of the University of Nevada, RenoInventors: Jesse D. Adams, Grant Korgan, Steven Malekos, Nathalie Renard-Le Galloudec, Yasuhiko Sentoku, Thomas E. Cowan
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Publication number: 20170094768Abstract: In particular embodiments, the present disclosure provides targets including a metal layer and defining a hollow inner surface. The hollow inner surface has an internal apex. The distance between at least two opposing points of the internal apex is less than about 15 ?m. In particular examples, the distance is less than about 1 ?m. Particular implementations of the targets are free standing. The targets have a number of disclosed shaped, including cones, pyramids, hemispheres, and capped structures. The present disclosure also provides arrays of such targets. Also provided are methods of forming targets, such as the disclosed targets, using lithographic techniques, such as photolithographic techniques. In particular examples, a target mold is formed from a silicon wafer and then one or more sides of the mold are coated with a target material, such as one or more metals.Type: ApplicationFiled: April 29, 2016Publication date: March 30, 2017Applicant: Board of Regents of the Nevada System of Higher Education on behalf of the University of NevadaInventors: Jesse D. Adams, Grant Korgan, Steven Malekos, Nathalie Renard-Le Galloudec, Yasuhiko Sentoku, Thomas E. Cowan
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Publication number: 20100028707Abstract: In particular embodiments, the present disclosure provides targets including a metal layer and defining a hollow inner surface. The hollow inner surface has an internal apex. The distance between at least two opposing points of the internal apex is less than about 15 ?m. In particular examples, the distance is less than about lam. Particular implementations of the targets are free standing. The targets have a number of disclosed shaped, including cones, pyramids, hemispheres, and capped structures. The present disclosure also provides arrays of such targets. Also provided are methods of forming targets, such as the disclosed targets, using lithographic techniques, such as photolithographic techniques. In particular examples, a target mold is formed from a silicon wafer and then one or more sides of the mold are coated with a target material, such as one or more metals.Type: ApplicationFiled: September 12, 2006Publication date: February 4, 2010Inventors: Thomas E. Cowan, Steven Malekos, Grant Korgan, Jesse Adams, Yasuhiko Sentoku, Nathalie Le Galloudec, Julien Fuchs
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Patent number: 7555102Abstract: In particular embodiments, the present disclosure provides systems and methods for imaging a subject using radiation emitted from a laser produced plasma generating by irradiating a target with a laser. In particular examples, the target includes at least one radiation enhancing component, such as a fluor, cap, or wire. In further examples, the target has a metal layer and an internal surface defining an internal apex, the internal apex of less than about 15 ?m, such as less than about 1 ?m. The targets may take a variety of shapes, including cones, pyramids, and hemispheres. Certain aspects of the present disclosure provide improved imaging of a subject, such as improved medical images of a radiation dose than typical conventional methods and systems.Type: GrantFiled: April 5, 2007Date of Patent: June 30, 2009Inventors: Nathalie Renard-Le Galloudec, Thomas E. Cowan, Yasuhiko Sentoku, Jennifer Rassuchine
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Patent number: 6852985Abstract: Methods and apparatus for focusing proton and ion beams within the profile of the beam envelope of an ultra-low emittance, charge neutralized emission to create a pattern without focusing the entire beam envelope or rastering. In one implementation, a method for use with laser accelerated ion beams comprises the steps: irradiating a surface of a target with pulsed laser irradiation to produce an electron plasma emission on a non-irradiated surface of the target, the electron plasma emission producing an ion beam emission on the non-irradiated surface, the ion beam emission having a beam envelope; and focusing ions of the ion beam emission into a plurality of component beams within the beam envelope as a result of the shape of the non-irradiated surface of the target.Type: GrantFiled: February 5, 2003Date of Patent: February 8, 2005Inventors: Thomas E. Cowan, Markus Roth, Patrick Audebert
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Patent number: 6693277Abstract: Detection of submicron scale cracks and other mechanical and chemical surface anomalies using PET. This surface technique has sufficient sensitivity to detect single voids or pits of sub-millimeter size and single cracks or fissures of millimeter size; and single cracks or fissures of millimeter-scale length, micrometer-scale depth, and nanometer-scale length, micrometer-scale depth, and nanometer-scale width. This technique can also be applied to detect surface regions of differing chemical reactivity. It may be utilized in a scanning or survey mode to simultaneously detect such mechanical or chemical features over large interior or exterior surface areas of parts as large as about 50 cm in diameter. The technique involves exposing a surface to short-lived radioactive gas for a time period, removing the excess gas to leave a partial monolayer, determining the location and shape of the cracks, voids, porous regions, etc., and calculating the width, depth, and length thereof. Detection of 0.Type: GrantFiled: January 4, 1999Date of Patent: February 17, 2004Assignee: The Regents of the University of CaliforniaInventors: Thomas E. Cowan, Richard H. Howell, Carlos A. Colmenares
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Publication number: 20040018700Abstract: Methods and apparatus for focusing proton and ion beams within the profile of the beam envelope of an ultra-low emittance, charge neutralized emission to create a pattern without focusing the entire beam envelope or rastering. In one implementation, a method for use with laser accelerated ion beams comprises the steps: irradiating a surface of a target with pulsed laser irradiation to produce an electron plasma emission on a non-irradiated surface of the target, the electron plasma emission producing an ion beam emission on the non-irradiated surface, the ion beam emission having a beam envelope; and focusing ions of the ion beam emission into a plurality of component beams within the beam envelope as a result of the shape of the non-irradiated surface of the target.Type: ApplicationFiled: February 5, 2003Publication date: January 29, 2004Applicant: General AtomicsInventors: Thomas E. Cowan, Markus Roth, Patrick Audebert
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Publication number: 20010006215Abstract: Detection of submicron scale cracks and other mechanical and chemical surface anomalies using PET. This surface technique has sufficient sensitivity to detect single voids or pits of sub-millimeter size and single cracks or fissures of millimeter size; and single cracks or fissures of millimeter-scale length, micrometer-scale depth, and nanometer-scale length, micrometer-scale depth, and nanometer-scale width. This technique can also be applied to detect surface regions of differing chemical reactivity. It may be utilized in a scanning or survey mode to simultaneously detect such mechanical or chemical features over large interior or exterior surface areas of parts as large as about 50 cm in diameter. The technique involves exposing a surface to short-lived radioactive gas for a time period, removing the excess gas to leave a partial monolayer, determining the location and shape of the cracks, voids, porous regions, etc., and calculating the width, depth, and length thereof. Detection of 0.Type: ApplicationFiled: January 4, 1999Publication date: July 5, 2001Applicant: Regents of the University of CaliforniaInventors: THOMAS E COWAN, RICHARD H HOWELL, CARLOS A COLMENARES
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Patent number: 5525760Abstract: Fan-folded electrical leads made from copper cladded Kapton, for example, with the copper cladding on one side serving as a ground plane and the copper cladding on the other side being etched to form the leads. The Kapton is fan folded with the leads located at the bottom of the fan-folds. Electrical connections are made by partially opening the folds of the fan and soldering, for example, the connections directly to the ground plane and/or the lead. The fan folded arrangement produces a number of advantages, such as electrically shielding the leads from the environment, is totally non-magnetic, and has a very low thermal conductivity, while being easy to fabricate.Type: GrantFiled: December 14, 1994Date of Patent: June 11, 1996Assignee: The United States of America as represented by the United States Department of EnergyInventors: Rajeev R. Rohatgi, Thomas E. Cowan
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Patent number: 5375321Abstract: Fan-folded electrical leads made from copper cladded Kapton, for example, with the copper cladding on one side serving as a ground plane and the copper cladding on the other side being etched to form the leads. The Kapton is fan folded with the leads located at the bottom of the fan-folds. Electrical connections are made by partially opening the folds of the fan and soldering, for example, the connections directly to the ground plane and/or the lead. The fan folded arrangement produces a number of advantages, such as electrically shielding the leads from the environment, is totally non-magnetic, and has a very low thermal conductivity, while being easy to fabricate.Type: GrantFiled: March 30, 1993Date of Patent: December 27, 1994Assignee: United States Department of EnergyInventors: Rajeev R. Rohatgi, Thomas E. Cowan