Patents by Inventor Tim R Koch
Tim R Koch 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: 20230417102Abstract: A laminate which can serve as either a smart window or a smart mirror is formed using first and second substrates coated with transparent first and second electrodes which are separated by foraminous layer and a third grid-like linear electrode insulated from the first and second electrodes. The foraminous layer includes spacers defining a cell space which is filled with a colloidal ink having first and second particles. The first particles have a positive charge and a first color and second particles having a negative charge and a second color different from the first color. By altering the voltages of the first, second and third electrodes, one can achieve different light transmission characteristics which, for example, can alter the color temperature of the light transmitted through the laminate or enhance reflective colors.Type: ApplicationFiled: August 30, 2023Publication date: December 28, 2023Inventors: Tim R. Koch, Jason C. Heikenfeld, Sayantika Mukherjee
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Patent number: 11773647Abstract: A laminate which can serve as either a smart window or a smart mirror is formed using first and second substrates coated with transparent first and second electrodes which are separated by foraminous layer and a third grid-like linear electrode insulated from the first and second electrodes. The foraminous layer includes spacers defining a cell space which is filled with a colloidal ink having first and second particles. The first particles have a positive charge and a first color and second particles having a negative charge and a second color different from the first color. By altering the voltages of the first, second and third electrodes, one can achieve different light transmission characteristics which, for example, can alter the color temperature of the light transmitted through the laminate or enhance reflective colors.Type: GrantFiled: November 30, 2020Date of Patent: October 3, 2023Assignee: University of CincinnatiInventors: Tim R. Koch, Jason C. Heikenfeld, Sayantika Mukherjee
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Publication number: 20210108463Abstract: A laminate which can serve as either a smart window or a smart mirror is formed using first and second substrates coated with transparent first and second electrodes which are separated by foraminous layer and a third grid-like linear electrode insulated from the first and second electrodes. The foraminous layer includes spacers defining a cell space which is filled with a colloidal ink having first and second particles. The first particles have a positive charge and a first color and second particles having a negative charge and a second color different from the first color. By altering the voltages of the first, second and third electrodes, one can achieve different light transmission characteristics which, for example, can alter the color temperature of the light transmitted through the laminate or enhance reflective colors.Type: ApplicationFiled: November 30, 2020Publication date: April 15, 2021Inventors: Tim R. Koch, Jason C. Heikenfeld, Sayantika Mukherjee
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Patent number: 10852615Abstract: A laminate which can serve as either a smart window or a smart mirror is formed using first and second substrates coated with transparent first and second electrodes which are separated by foraminous layer and a third grid-like linear electrode insulated from the first and second electrodes. The foraminous layer includes spacers defining a cell space which is filled with a colloidal ink having first and second particles. The first particles have a positive charge and a first color and second particles having a negative charge and a second color different from the first color. By altering the voltages of the first, second and third electrodes, one can achieve different light transmission characteristics which, for example, can alter the color temperature of the light transmitted through the laminate or enhance reflective colors.Type: GrantFiled: December 2, 2015Date of Patent: December 1, 2020Assignees: University of Cincinnati, Crown Electrokinetics Corp.Inventors: Tim R. Koch, Jason C. Heikenfeld, Sayantika Mukherjee
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Publication number: 20180031942Abstract: A laminate which can serve as either a smart window or a smart mirror is formed using first and second substrates coated with transparent first and second electrodes which are separated by foraminous layer and a third grid-like linear electrode insulated from the first and second electrodes. The foraminous layer includes spacers defining a cell space which is filled with a colloidal ink having first and second particles. The first particles have a positive charge and a first color and second particles having a negative charge and a second color different from the first color. By altering the voltages of the first, second and third electrodes, one can achieve different light transmission characteristics which, for example, can alter the color temperature of the light transmitted through the laminate or enhance reflective colors.Type: ApplicationFiled: December 2, 2015Publication date: February 1, 2018Inventors: TIM R KOCH, Jason C. Heikenfeld, Sayantika Mukherjee
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Patent number: 9134586Abstract: A pigment-based ink comprises: a non-polar carrier fluid; and pigment particles suspended in the non-polar carrier fluid. The pigment particles are coated with a metal oxide that is modified with at least one silane coupling agent to introduce functional groups, steric stabilizers or both. A combination of an electronic display and an electronic ink is provided, as is a method for modifying the pigment particles.Type: GrantFiled: October 5, 2010Date of Patent: September 15, 2015Assignee: Hewlett-Packard Development Company, L.P.Inventors: Qin Liu, Zhang-Lin Zhou, Tim R Koch
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Patent number: 8619012Abstract: A display element (100) corresponds to a pixel of a display. The display element includes a top electrode (102) connected to a first addressable line of the display, and a bottom electrode (104) connected to a second addressable line of the display. The display element includes a display mechanism (106) situated between the top electrode and the bottom electrode and having a number of individually turned-on steps. Each individually turned-on step has a turn-on voltage threshold at which the step is turned on upon a voltage applied between the top and the bottom electrodes equal to or greater than the turn-on voltage threshold. Each individually turned-on step has a turn-off voltage threshold at which the step is turned off upon a voltage applied between the top and the bottom electrodes equal to or less than the turn-off voltage threshold.Type: GrantFiled: July 19, 2007Date of Patent: December 31, 2013Assignee: Hewlett-Packard Development Company, L.P.Inventors: Peter Fricke, Alan R Arthur, Joseph Stellbrink, Tim R Koch
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Patent number: 8432598Abstract: A transparent conductor structure includes a transparent, insulating substrate and a discontinuous, transparent conducting layer established on the substrate. The discontinuous conducting layer is partitioned into a plurality of segments, each of which has a thickness ranging from about 1 nm to about 10 ?m. Two or more of the segments are connected together by i) a metal trace disposed on or between them, or ii) a mesh, formed from a plurality of metal traces, disposed across a surface of the segments.Type: GrantFiled: November 25, 2009Date of Patent: April 30, 2013Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jong-Souk Yeo, Gregg Alan Combs, Tim R. Koch
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Publication number: 20120170127Abstract: Various reflective display devices are provided. In one embodiment, a reflective display device is provided that includes a first controllable light absorption layer capable of absorbing incident light in a first specified wavelength band and at least a second specified wavelength band and a first reflector behind the first absorption layer, which is capable of selectively reflecting at least some wavelengths of light within the first and second specified wavelength bands and substantially transmit light of other wavelengths. The reflective display device further includes a second controllable light absorption layer behind the selective reflector, which is capable of absorbing incident light in at least a third specified wavelength band and a second reflector behind the second layer, which is capable of reflecting at least some wavelengths of light within the third specified wavelength band.Type: ApplicationFiled: June 18, 2009Publication date: July 5, 2012Inventors: Stephen Kitson, Timothy Taphouse, Tim R. Koch
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Publication number: 20120127560Abstract: An electro-optical display includes colorant particles that are suspended in a carrier fluid. The colorant particles are controlled by three different types of electrodes. An exposed electrode acts on the colorant particles in an electrokinetic manner by compacting the colorant particles. A passivated electrode acts on the colorant particles in an electrostatic manner by holding the colorant particles once compacted. A reference electrode attracts the colorant particles to compaction areas.Type: ApplicationFiled: November 22, 2010Publication date: May 24, 2012Inventors: Jeffrey Todd Mabeck, Gregg Alan Combs, Tim R. Koch, Pavel Kornilovich, Jong-Souk Yeo, Brad Benson
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Patent number: 8179590Abstract: An electro-optical display includes colorant particles that are suspended in a carrier fluid. The colorant particles are controlled by three different types of electrodes. An exposed electrode acts on the colorant particles in an electrokinetic manner by compacting the colorant particles. A passivated electrode acts on the colorant particles in an electrostatic manner by holding the colorant particles once compacted. A reference electrode attracts the colorant particles to compaction areas.Type: GrantFiled: November 22, 2010Date of Patent: May 15, 2012Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jeffrey Todd Mabeck, Gregg Alan Combs, Tim R. Koch, Pavel Kornilovich, Jong-Souk Yeo, Brad Benson
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Publication number: 20120081778Abstract: A pigment-based ink comprises: a non-polar carrier fluid; and pigment particles suspended in the non-polar carrier fluid. The pigment particles are coated with a metal oxide that is modified with at least one silane coupling agent to introduce functional groups, steric stabilizers or both. A combination of an electronic display and an electronic ink is provided, as is a method for modifying the pigment particles.Type: ApplicationFiled: October 5, 2010Publication date: April 5, 2012Inventors: Qin Liu, Zhang-Lin Zhou, Tim R. Koch
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Patent number: 8089687Abstract: Electro-optical display systems are disclosed. An electro-optical display system may include a display volume containing a fluid having a plurality of colorant particles; a dielectric layer adjacent the display volume, the dielectric layer including recessed regions configured to contain the plurality of colorant particles; a plurality of electrodes configured to selectively move the plurality of colorant particles between a compacted position in which all or nearly all of the plurality of colorant particles are in the recessed regions, and a spread position in which all or nearly all of the plurality of colorant particles are spread across the display volume; and at least one color filter configured to absorb at least one wavelength of light.Type: GrantFiled: December 21, 2009Date of Patent: January 3, 2012Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jeffrey T. Mabeck, Jong-Souk Yeo, Tim R. Koch, Gregg A. Combs
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Publication number: 20110304905Abstract: A display system encompasses electrodes that induce a convective flow of a carrier fluid that transports a colorant species that is suspended in the carrier fluid. At least one of the convection flow, speed, and direction of the colorant species is controlled by operation of the electrodes.Type: ApplicationFiled: August 23, 2011Publication date: December 15, 2011Inventors: Jong-Souk Yeo, Gregg Alan Combs, Jeffrey Todd Mabeck, Tim R. Koch, Pavel Kornilovich, Donald Milton Hill
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Patent number: 8018642Abstract: A display system encompasses electrodes that induce a convective flow of a carrier fluid that transports a colorant species that is suspended in the carrier fluid. At least one of the convection flow, speed, and direction of the colorant species is controlled by operation of the electrodes.Type: GrantFiled: March 26, 2009Date of Patent: September 13, 2011Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jong-Souk Yeo, Gregg Alan Combs, Jeffrey Todd Mabeck, Tim R. Koch, Pavel Kornilovich, Donald Milton Hill
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Publication number: 20110149376Abstract: Electro-optical display systems are disclosed. An electro-optical display system may include a display volume containing a fluid having a plurality of colorant particles; a dielectric layer adjacent the display volume, the dielectric layer including recessed regions configured to contain the plurality of colorant particles; a plurality of electrodes configured to selectively move the plurality of colorant particles between a compacted position in which all or nearly all of the plurality of colorant particles are in the recessed regions, and a spread position in which all or nearly all of the plurality of colorant particles are spread across the display volume; and at least one color filter configured to absorb at least one wavelength of light.Type: ApplicationFiled: December 21, 2009Publication date: June 23, 2011Inventors: Jeffrey T. MABECK, Jong-Souk Yeo, Tim R. Koch, Gregg A. Combs
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Publication number: 20110120749Abstract: A transparent conductor structure includes a transparent, insulating substrate and a discontinuous, transparent conducting layer established on the substrate. The discontinuous conducting layer is partitioned into a plurality of segments, each of which has a thickness ranging from about 1 nm to about 10 ?m. Two or more of the segments are connected together by i) a metal trace disposed on or between them, or ii) a mesh, formed from a plurality of metal traces, disposed across a surface of the segments.Type: ApplicationFiled: November 25, 2009Publication date: May 26, 2011Inventors: Jong-Souk Yeo, Gregg Alan Combs, Tim R. Koch
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Publication number: 20100245981Abstract: A display system encompasses electrodes that induce a convective flow of a carrier fluid that transports a colorant species that is suspended in the carrier fluid. At least one of the convection flow, speed, and direction of the colorant species is controlled by operation of the electrodes.Type: ApplicationFiled: March 26, 2009Publication date: September 30, 2010Inventors: Jong-Souk Yeo, Gregg Alan Combs, Jeffrey Todd Mabeck, Tim R. Koch, Pavel Kornilovich, Donald Milton Hill
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Publication number: 20100045582Abstract: A display element (100) corresponds to a pixel of a display. The display element includes a top electrode (102) connected to a first addressable line of the display, and a bottom electrode (104) connected to a second addressable line of the display. The display element includes a display mechanism (106) situated between the top electrode and the bottom electrode and having a number of individually turned-on steps. Each individually turned-on step has a turn-on voltage threshold at which the step is turned on upon a voltage applied between the top and the bottom electrodes equal to or greater than the turn-on voltage threshold. Each individually turned-on step has a turn-off voltage threshold at which the step is turned off upon a voltage applied between the top and the bottom electrodes equal to or less than the turn-off voltage threshold.Type: ApplicationFiled: July 19, 2007Publication date: February 25, 2010Inventors: Peter Fricke, Alan R. Arthur, Joseph Stellbrink, Tim R. Koch
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Patent number: 7470581Abstract: A method of manufacturing an electromagnetic (EM) waveguide capable of guiding a wave along a pre-defined propagation path is described. The method includes providing a core region that extends along the propagation path and printing a colloidal crystal comprised of first particles on the waveguide core region.Type: GrantFiled: July 27, 2006Date of Patent: December 30, 2008Assignee: Hewlett-Packard Development Company, L.P.Inventors: Swaroop K. Kommera, Tim R. Koch