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).

  • Publication number: 20120067728
    Abstract: 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: Application
    Filed: January 13, 2003
    Publication date: March 22, 2012
    Inventors: John H. Harreld, Galen D. Stucky, Nathan L. Mitchell, Jeff S. Sakamoto
  • Patent number: 8137525
    Abstract: 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: Grant
    Filed: January 13, 2003
    Date of Patent: March 20, 2012
    Assignee: The Regents of the University of California
    Inventors: John H. Harreld, Galen D. Stucky, Nathan L. Mitchell, Jeff S. Sakamoto
  • Patent number: 8075904
    Abstract: 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: Grant
    Filed: September 2, 2008
    Date of Patent: December 13, 2011
    Assignees: California Institute of Technology, The Regents of University of California, Board of Trustees of Michigan State University
    Inventors: Jeff S. Sakamoto, Mark Henry Tuszynski, Thomas Gros, Christina Chan, Sumit Mehrotra
  • Patent number: 7837913
    Abstract: 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: Grant
    Filed: August 10, 2005
    Date of Patent: November 23, 2010
    Assignee: California Institute of Technology
    Inventors: Jeff S. Sakamoto, James R. Weiss, Jean-Pierre Fleurial, Adam Kisor, Mark Tuszynski, Shula Stokols, Todd Edward Holt, David James Welker, Christopher David Breckon
  • Publication number: 20100243018
    Abstract: 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: Application
    Filed: March 29, 2010
    Publication date: September 30, 2010
    Applicant: California Institute of Technology
    Inventors: Billy Chun-Yip Li, Erik J. Brandon, Vilupanur A. Ravi, Thierry Caillat, Richard C. Ewell, Samad A. Firdosy, Jeff S. Sakamoto
  • Publication number: 20100055144
    Abstract: 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: Application
    Filed: August 10, 2005
    Publication date: March 4, 2010
    Applicant: California Institute of Technology
    Inventors: Jeff S. Sakamoto, James R. Weiss, Jean-Pierre Fleurial, Adam Kisor, Mark Tuszynski, Shula Stokols, Todd Edward Holt, David James Welker, Christopher David Breckon
  • Publication number: 20090202605
    Abstract: 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: Application
    Filed: September 2, 2008
    Publication date: August 13, 2009
    Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Jeff S. Sakamoto, Mark Tuszynski, Thomas Gros
  • Patent number: 7461512
    Abstract: 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: Grant
    Filed: October 29, 2004
    Date of Patent: December 9, 2008
    Assignee: California Institute of Technology
    Inventors: Jeff S. Sakamoto, G. Jeffrey Snyder, Thierry Calliat, Jean-Pierre Fleurial, Steven M. Jones, Jong-Ah Palk