Patents by Inventor Eric Kreit

Eric Kreit 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: 10473914
    Abstract: A method for manufacturing a freestanding film having at least one population of through holes cumulatively totaling at least 1% of the film area, wherein the standard deviation of hole diameters is less than 25% and a thickness less than 25 micrometers, The film provides a carrier substrate, a photo-curable material, a release agent and deposits a photo-curable material on the substrate, selectively curing the material and leaving uncured material in the pattern of holes, dissolving away the uncured material and removing the cured material from the carrier substrate. Methods and apparatus are described.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: November 12, 2019
    Assignee: University of Cincinnati
    Inventors: Eric Kreit, John David Rudolph, Kenneth A. Dean
  • Publication number: 20170357086
    Abstract: A method for manufacturing a freestanding film having at least one population of through holes cumulatively totaling at least 1% of the film area, wherein the standard deviation of hole diameters is less than 25% and a thickness less than 25 micrometers, The film provides a carrier substrate, a photo-curable material, a release agent and deposits a photo-curable material on the substrate, selectively curing the material and leaving uncured material in the pattern of holes, dissolving away the uncured material and removing the cured material from the carrier substrate. Methods and apparatus are described.
    Type: Application
    Filed: August 7, 2017
    Publication date: December 14, 2017
    Inventors: Eric Kreit, John David Rudolph, Kenneth A. Dean
  • Patent number: 9753273
    Abstract: A method for manufacturing a freestanding film having at least one population of through holes cumulatively totaling at least 1% of the film area, wherein the standard deviation of hole diameters is less than 25% and a thickness less than 25 micrometers, The film provides a carrier substrate, a photo-curable material, a release agent and deposits a photo-curable material on the substrate, selectively curing the material and leaving uncured material in the pattern of holes, dissolving away the uncured material and removing the cured material from the carrier. Methods and apparatus are described.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: September 5, 2017
    Assignee: University Of Cincinnati
    Inventors: Eric Kreit, John David Rudolph, Kenneth A. Dean
  • Patent number: 9180454
    Abstract: Electrowetting and electrofluidic devices and methods. The device includes a hydrophobic channel formed between first and second substrates and a polar fluid and a non-polar fluid contained in the channel. An electrode with a dielectric layer is electrically connected to a voltage source. A Laplace barrier within the hydrophobic channel defines a fluid pathway that is open to the movement of the polar fluid within the channel. The polar fluid moves to a first position when the voltage source is biased at a first voltage that is less than or equal to a threshold voltage. The polar fluid moves to a second position when the voltage source is biased with a second voltage that is greater than the first voltage.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: November 10, 2015
    Assignee: University Of Cincinnati
    Inventors: Jason Heikenfeld, Manjeet Dhindsa, Eric Kreit
  • Publication number: 20150293347
    Abstract: A method for manufacturing a freestanding film having at least one population of through holes cumulatively totaling at least 1% of the film area, wherein the standard deviation of hole diameters is less than 25% and a thickness less than 25 micrometers, The film provides a carrier substrate, a photo-curable material, a release agent and deposits a photo-curable material on the substrate, selectively curing the material and leaving uncured material in the pattern of holes, dissolving away the uncured material and removing the cured material from the carrier. Methods and apparatus are described.
    Type: Application
    Filed: April 2, 2015
    Publication date: October 15, 2015
    Inventors: ERIC KREIT, John David Rudolph, Kenneth A. Dean
  • Patent number: 8810882
    Abstract: Electrofluidic and electrowetting display pixels, electrofluidic and electrowetting displays, and methods of operating electrofluidic and electrowetting display pixels. The pixel includes a hydrophobic channel formed between first and second substrates and containing a polar fluid and a non-polar fluid, of which at least one is visible through at least one substrate. An electrode with a dielectric is electrically connected to a voltage source. A Laplace barrier defines a fluid pathway for fluid movement in the channel. The polar fluid moves a first position when the voltage source is biased at a first voltage of less than or equal to a threshold voltage to provide a first display state. The polar fluid moves to a second position when the voltage source is biased with a second voltage, greater than the first voltage, to provide a second display state.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: August 19, 2014
    Assignee: University Of Cincinnati
    Inventors: Jason Heikenfeld, Eric Kreit, Shu Yang
  • Publication number: 20120168309
    Abstract: Electrowetting and electrofluidic devices and methods. The device includes a hydrophobic channel formed between first and second substrates and a polar fluid and a non-polar fluid contained in the channel. An electrode with a dielectric layer is electrically connected to a voltage source. A Laplace barrier within the hydrophobic channel defines a fluid pathway that is open to the movement of the polar fluid within the channel. The polar fluid moves to a first position when the voltage source is biased at a first voltage that is less than or equal to a threshold voltage. The polar fluid moves to a second position when the voltage source is biased with a second voltage that is greater than the first voltage.
    Type: Application
    Filed: August 13, 2010
    Publication date: July 5, 2012
    Applicant: UNIVERSITY OF CINCINNATI
    Inventors: Jason Heikenfeld, Manjeet Dhindsa, Eric Kreit
  • Publication number: 20120154886
    Abstract: Electrofluidic and electrowetting display pixels, electrofluidic and electrowetting displays, and methods of operating electrofluidic and electrowetting display pixels. The pixel includes a hydrophobic channel formed between first and second substrates and containing a polar fluid and a non-polar fluid, of which at least one is visible through at least one substrate. An electrode with a dielectric is electrically connected to a voltage source. A Laplace barrier defines a fluid pathway for fluid movement in the channel. The polar fluid moves a first position when the voltage source is biased at a first voltage of less than or equal to a threshold voltage to provide a first display state. The polar fluid moves to a second position when the voltage source is biased with a second voltage, greater than the first voltage, to provide a second display state.
    Type: Application
    Filed: August 13, 2010
    Publication date: June 21, 2012
    Applicant: UNIVERSITY OF CINCINNATI
    Inventors: Jason Heikenfeld, Eric Kreit, Shu Yang