Patents by Inventor John E. Sadleir

John E. Sadleir 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).

  • Patent number: 10074764
    Abstract: A method of forming low-energy x-ray absorbers. Sensors may be formed on a semiconductor, e.g., silicon, wafer. A seed metal layer, e.g., gold, is deposited on the wafer and patterned into stem pads for electroplating. Stems, e.g., gold, are electroplated from the stem seed pads through a stem mask. An absorber layer, e.g., gold, is deposited on the wafer, preferably e-beam evaporated. After patterning the absorbers, absorber and stem mask material is removed, e.g., in a solvent bath and critical point drying.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: September 11, 2018
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Thomas R. Stevenson, Manuel A. Balvin, Kevin L. Denis, John E. Sadleir, Peter C. Nagler
  • Publication number: 20180090662
    Abstract: A method of forming low-energy x-ray absorbers. Sensors may be formed on a semiconductor, e.g., silicon, wafer. A seed metal layer, e.g., gold, is deposited on the wafer and patterned into stem pads for electroplating. Stems, e.g., gold, are electroplated from the stem seed pads through a stem mask. An absorber layer, e.g., gold, is deposited on the wafer, preferably e-beam evaporated. After patterning the absorbers, absorber and stem mask material is removed, e.g., in a solvent bath and critical point drying.
    Type: Application
    Filed: September 29, 2016
    Publication date: March 29, 2018
    Inventors: THOMAS R. STEVENSON, MANUEL A. BALVIN, KEVIN L. DENIS, JOHN E. SADLEIR, PETER C. NAGLER
  • Patent number: 9913414
    Abstract: The present invention relates to a method and apparatus of protecting magnetically sensitive devices with a shield, including: a non-superconducting metal or lower transition temperature (Tc) material compared to a higher transition temperature material, disposed in a magnetic field; means for creating a spatially varying order parameter's |?(r,T)|2 in a non-superconducting metal or a lower transition temperature material; wherein a spatially varying order parameter is created by a proximity effect, such that the non-superconducting metal or the lower transition temperature material becomes superconductive as a temperature is lowered, creating a flux-free Meissner state at a center thereof, in order to sweep magnetic flux lines to the periphery.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: March 6, 2018
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: John E. Sadleir
  • Publication number: 20170071082
    Abstract: The present invention relates to a method and apparatus of protecting magnetically sensitive devices with a shield, including: a non-superconducting metal or lower transition temperature (Tc) material compared to a higher transition temperature material, disposed in a magnetic field; means for creating a spatially varying order parameter's |?(r, T)|2 in a non-superconducting metal or a lower transition temperature material; wherein a spatially varying order parameter is created by a proximity effect, such that the non-superconducting metal or the lower transition temperature material becomes superconductive as a temperature is lowered, creating a flux-free Meissner state at a center thereof, in order to sweep magnetic flux lines to the periphery.
    Type: Application
    Filed: September 4, 2015
    Publication date: March 9, 2017
    Inventor: JOHN E. SADLEIR
  • Patent number: 8674302
    Abstract: Methods for forming sensors using transition edge sensors (TES) and sensors therefrom are described. The method includes forming a plurality of sensor arrays includes at least one TES device. The TES device includes a TES device body, a first superconducting lead contacting a first portion of the TES device body, and a second superconducting lead contacting of a second portion of the TES device body, where the first and second superconducting leads separated on the TES device body by a lead spacing. The lead spacing can be selected to be different for at least two of the plurality of sensor arrays. The method also includes determining a transition temperature for each of the plurality of sensor arrays and generating a signal responsive to detecting a change in the electrical characteristics of one of the plurality of sensor arrays meeting a transition temperature criterion.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: March 18, 2014
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics Space Administration
    Inventor: John E. Sadleir
  • Patent number: 8393786
    Abstract: Methods for forming sensors using transition edge sensors (TES) and sensors therefrom are described. The method includes forming a plurality of sensor arrays includes at least one TES device. The TES device includes a TES device body, a first superconducting lead contacting a first portion of the TES device body, and a second superconducting lead contacting of a second portion of the TES device body, where the first and second superconducting leads separated on the TES device body by a lead spacing. The lead spacing can be selected to be different for at least two of the plurality of sensor arrays. The method also includes determining a transition temperature for each of the plurality of sensor arrays and generating a signal responsive to detecting a change in the electrical characteristics of one of the plurality of sensor arrays meeting a transition temperature criterion.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: March 12, 2013
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: John E. Sadleir
  • Publication number: 20100327163
    Abstract: Methods for forming sensors using transition edge sensors (TES) and sensors therefrom are described. The method includes forming a plurality of sensor arrays includes at least one TES device. The TES device includes a TES device body, a first superconducting lead contacting a first portion of the TES device body, and a second superconducting lead contacting of a second portion of the TES device body, where the first and second superconducting leads separated on the TES device body by a lead spacing. The lead spacing can be selected to be different for at least two of the plurality of sensor arrays. The method also includes determining a transition temperature for each of the plurality of sensor arrays and generating a signal responsive to detecting a change in the electrical characteristics of one of the plurality of sensor arrays meeting a transition temperature criterion.
    Type: Application
    Filed: May 28, 2010
    Publication date: December 30, 2010
    Inventor: JOHN E. SADLEIR
  • Publication number: 20100304977
    Abstract: Methods for forming sensors using transition edge sensors (TES) and sensors therefrom are described. The method includes forming a plurality of sensor arrays includes at least one TES device. The TES device includes a TES device body, a first superconducting lead contacting a first portion of the TES device body, and a second superconducting lead contacting of a second portion of the TES device body, where the first and second superconducting leads separated on the TES device body by a lead spacing. The lead spacing can be selected to be different for at least two of the plurality of sensor arrays. The method also includes determining a transition temperature for each of the plurality of sensor arrays and generating a signal responsive to detecting a change in the electrical characteristics of one of the plurality of sensor arrays meeting a transition temperature criterion.
    Type: Application
    Filed: May 28, 2010
    Publication date: December 2, 2010
    Inventor: JOHN E. SADLEIR