Patents by Inventor Jeff S. Sakamoto
Jeff S. Sakamoto 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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Publication number: 20120067728Abstract: A method of making colloidal sphere templates and the sphere-templated porous materials made from the templates. The templated porous materials or thin films comprise micron and submicron-scaled spheres in ordered, disordered, or partially ordered arrays. The invention is useful in the synthesis of submicron porous, metallic tin-based and other high capacity anode materials with controlled pore structures for application in rechargeable lithium-ion batteries. The expected benefits of the resulting nanostructured metal films include a large increase in lithium storage capacity, rate capability, and improved stability with electrochemical cycling.Type: ApplicationFiled: January 13, 2003Publication date: March 22, 2012Inventors: John H. Harreld, Galen D. Stucky, Nathan L. Mitchell, Jeff S. Sakamoto
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Patent number: 8137525Abstract: A method of making colloidal sphere templates and the sphere-templated porous materials made from the templates. The templated porous materials or thin films comprise micron and submicron-scaled spheres in ordered, disordered, or partially ordered arrays. The invention is useful in the synthesis of submicron porous, metallic tin-based and other high capacity anode materials with controlled pore structures for application in rechargeable lithium-ion batteries. The expected benefits of the resulting nanostructured metal films include a large increase in lithium storage capacity, rate capability, and improved stability with electrochemical cycling.Type: GrantFiled: January 13, 2003Date of Patent: March 20, 2012Assignee: The Regents of the University of CaliforniaInventors: John H. Harreld, Galen D. Stucky, Nathan L. Mitchell, Jeff S. Sakamoto
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Patent number: 8075904Abstract: Millimeter to nano-scale structures manufactured using a multi-component polymer fiber matrix are disclosed. The use of dissimilar polymers allows the selective dissolution of the polymers at various stages of the manufacturing process. In one application, biocompatible matrixes may be formed with long pore length and small pore size. The manufacturing process begins with a first polymer fiber arranged in a matrix formed by a second polymer fiber. End caps may be attached to provide structural support and the polymer fiber matrix selectively dissolved away leaving only the long polymer fibers. These may be exposed to another product, such as a biocompatible gel to form a biocompatible matrix. The polymer fibers may then be selectively dissolved leaving only a biocompatible gel scaffold with the pores formed by the dissolved polymer fibers. The scaffolds may be used in, among other applications, the repair of central and peripheral nerves.Type: GrantFiled: September 2, 2008Date of Patent: December 13, 2011Assignees: California Institute of Technology, The Regents of University of California, Board of Trustees of Michigan State UniversityInventors: Jeff S. Sakamoto, Mark Henry Tuszynski, Thomas Gros, Christina Chan, Sumit Mehrotra
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Patent number: 7837913Abstract: Millimeter to nano-scale structures manufactured using a multi-component polymer fiber matrix are disclosed. The use of dissimilar polymers allows the selective dissolution of the polymers at various stages of the manufacturing process. In one application, biocompatible matrixes may be formed with long pore length and small pore size. The manufacturing process begins with a first polymer fiber arranged in a matrix formed by a second polymer fiber. End caps may be attached to provide structural support and the polymer fiber matrix selectively dissolved away leaving only the long polymer fibers. These may be exposed to another product, such as a biocompatible gel to form a biocompatible matrix. The polymer fibers may then be selectively dissolved leaving only a biocompatible gel scaffold with the pores formed by the dissolved polymer fibers.Type: GrantFiled: August 10, 2005Date of Patent: November 23, 2010Assignee: California Institute of TechnologyInventors: Jeff S. Sakamoto, James R. Weiss, Jean-Pierre Fleurial, Adam Kisor, Mark Tuszynski, Shula Stokols, Todd Edward Holt, David James Welker, Christopher David Breckon
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Publication number: 20100243018Abstract: A thermoelectric power generation device using molybdenum metallization to a Zintl thermoelectric material in a thermoelectric power generation device operating at high temperature, e.g. at or above 1000° C., is disclosed. The Zintl thermoelectric material may comprise Yb14MnSb11. A thin molybdenum metallization layer of approximately 5 microns or less may be employed. The thin molybdenum layer may be applied in a foil under high pressure, e.g. 1800 psi, at high temperature, e.g. 1000° C. The metallization layer may then be bonded or brazed to other components, such as heat collectors or current carrying electrodes, of the thermoelectric power generation device.Type: ApplicationFiled: March 29, 2010Publication date: September 30, 2010Applicant: California Institute of TechnologyInventors: Billy Chun-Yip Li, Erik J. Brandon, Vilupanur A. Ravi, Thierry Caillat, Richard C. Ewell, Samad A. Firdosy, Jeff S. Sakamoto
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Publication number: 20100055144Abstract: Millimeter to nano-scale structures manufactured using a multi-component polymer fiber matrix are disclosed. The use of dissimilar polymers allows the selective dissolution of the polymers at various stages of the manufacturing process. In one application, biocompatible matrixes may be formed with long pore length and small pore size. The manufacturing process begins with a first polymer fiber arranged in a matrix formed by a second polymer fiber. End caps may be attached to provide structural support and the polymer fiber matrix selectively dissolved away leaving only the long polymer fibers. These may be exposed to another product, such as a biocompatible gel to form a biocompatible matrix. The polymer fibers may then be selectively dissolved leaving only a biocompatible gel scaffold with the pores formed by the dissolved polymer fibers.Type: ApplicationFiled: August 10, 2005Publication date: March 4, 2010Applicant: California Institute of TechnologyInventors: Jeff S. Sakamoto, James R. Weiss, Jean-Pierre Fleurial, Adam Kisor, Mark Tuszynski, Shula Stokols, Todd Edward Holt, David James Welker, Christopher David Breckon
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Publication number: 20090202605Abstract: Millimeter to nano-scale structures manufactured using a multi-component polymer fiber matrix are disclosed. The use of dissimilar polymers allows the selective dissolution of the polymers at various stages of the manufacturing process. In one application, biocompatible matrixes may be formed with long pore length and small pore size. The manufacturing process begins with a first polymer fiber arranged in a matrix formed by a second polymer fiber. End caps may be attached to provide structural support and the polymer fiber matrix selectively dissolved away leaving only the long polymer fibers. These may be exposed to another product, such as a biocompatible gel to form a biocompatible matrix. The polymer fibers may then be selectively dissolved leaving only a biocompatible gel scaffold with the pores formed by the dissolved polymer fibers. The scaffolds may be used in, among other applications, the repair of central and peripheral nerves.Type: ApplicationFiled: September 2, 2008Publication date: August 13, 2009Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGYInventors: Jeff S. Sakamoto, Mark Tuszynski, Thomas Gros
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Patent number: 7461512Abstract: The present invention relates to a castable, aerogel-based, ultra-low thermal conductivity opacified insulation to suppress sublimation. More specifically, the present invention relates to an aerogel opacified with various opacifying or reflecting constituents to suppress sublimation and provide thermal insulation in thermoelectric modules. The opacifying constituent can be graded within the aerogel for increased sublimation suppression, and the density of the aerogel can similarly be graded to achieve optimal thermal insulation and sublimation suppression.Type: GrantFiled: October 29, 2004Date of Patent: December 9, 2008Assignee: California Institute of TechnologyInventors: Jeff S. Sakamoto, G. Jeffrey Snyder, Thierry Calliat, Jean-Pierre Fleurial, Steven M. Jones, Jong-Ah Palk