Patents by Inventor David A. Glassner

David A. Glassner 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: 10295844
    Abstract: A device may include a substrate. The device may include an optical waveguide formed in or on the substrate. The device may include a signal electrode extending along a longitudinal axis. The signal electrode may include a first portion with a proximal end that is proximal to the optical waveguide, to induce a signal from the signal electrode to the optical waveguide. The signal electrode may include a second portion, at least partially attached to or continuous with a distal end of the first portion. The device may include one or more ground electrodes that form an enclosure. The enclosure may enclose the signal electrode with regard to a side of the substrate in a plane perpendicular to the longitudinal axis.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: May 21, 2019
    Assignee: Lumentum Operations LLC
    Inventors: Karl Kissa, David Glassner
  • Patent number: 10295849
    Abstract: An optical modulator may include at least one ground electrode. The optical modulator may include at least one signal electrode parallel to the at least one ground electrode. The optical modulator may include at least one waveguide parallel to the at least one ground electrode and the at least one signal electrode. The optical modulator may include a first substrate disposed underneath the at least one ground electrode and the at least one signal electrode relative to a surface of the optical modulator. The optical modulator may include a second substrate disposed underneath at least a portion of the first substrate relative to the surface of the optical modulator. The optical modulator may include a floating conductor disposed between the first substrate and the second substrate.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: May 21, 2019
    Assignee: Lumentum Operations LLC
    Inventors: Karl Kissa, Siu Kwan Cheung, David M. Shemo, David Glassner, Ed L. Wooten
  • Publication number: 20180173026
    Abstract: An optical modulator may include at least one ground electrode. The optical modulator may include at least one signal electrode parallel to the at least one ground electrode. The optical modulator may include at least one waveguide parallel to the at least one ground electrode and the at least one signal electrode. The optical modulator may include a first substrate disposed underneath the at least one ground electrode and the at least one signal electrode relative to a surface of the optical modulator. The optical modulator may include a second substrate disposed underneath at least a portion of the first substrate relative to the surface of the optical modulator. The optical modulator may include a floating conductor disposed between the first substrate and the second substrate.
    Type: Application
    Filed: October 27, 2017
    Publication date: June 21, 2018
    Inventors: Karl KISSA, Siu Kwan CHEUNG, David M. SHEMO, David GLASSNER, Ed L. WOOTEN
  • Publication number: 20160291352
    Abstract: A device may include a substrate. The device may include an optical waveguide formed in or on the substrate. The device may include a signal electrode extending along a longitudinal axis. The signal electrode may include a first portion with a proximal end that is proximal to the optical waveguide, to induce a signal from the signal electrode to the optical waveguide. The signal electrode may include a second portion, at least partially attached to or continuous with a distal end of the first portion. The device may include one or more ground electrodes that form an enclosure. The enclosure may enclose the signal electrode with regard to a side of the substrate in a plane perpendicular to the longitudinal axis.
    Type: Application
    Filed: April 5, 2016
    Publication date: October 6, 2016
    Inventors: Karl KISSA, David GLASSNER
  • Publication number: 20160281117
    Abstract: This invention provides a way to deal with acetic acid derived from biomass, for fermentation of cellulosic sugars. In some variations, a process for producing ethanol from lignocellulosic biomass comprises: extracting hemicelluloses and acetic acid from lignocellulosic biomass; hydrolyzing the hemicelluloses, using an acid catalyst or enzymes, to generate hemicellulose monomers and more acetic acid; fermenting acetic acid to lipids using a suitable lipid-producing microorganism, thereby reducing acetic acid concentration; fermenting hemicellulose monomers to ethanol using a suitable ethanol-producing microorganism; and recovering the ethanol. The co-fermentation of acetic acid and sugars may be carried out in a single fermentor or in separate fermentors. The invention may be applied to fermentation products other than ethanol. In some embodiments, the fermentation product can act as an extraction solvent to extract lipids from the lipid-producing microorganism, such as a lipid-producing yeast.
    Type: Application
    Filed: March 28, 2016
    Publication date: September 29, 2016
    Inventors: Theodora RETSINA, David GLASSNER, Ryan O'CONNOR
  • Publication number: 20150307904
    Abstract: Methods for producing a biofuel are provided. Also provided are biocatalysts that convert a feedstock to a biofuel.
    Type: Application
    Filed: November 21, 2014
    Publication date: October 29, 2015
    Inventors: Andrew C. Hawkins, David A. Glassner, Thomas Buelter, James L. Wade, Peter Meinhold, Matthew W. Peters, Patrick R. Gruber, William A. Evanko, Aristos A. Aristidou, Marco Landwehr
  • Publication number: 20140360376
    Abstract: This invention is directed to methods for recovery of C3-C6 alcohols from dilute aqueous solutions, such as fermentation broths. Such methods provide improved volumetric productivity for the fermentation and allows recovery of the alcohol. Such methods also allow for reduced energy use in the production and drying of spent fermentation broth due to increased effective concentration of the alcohol product by the simultaneous fermentation and recovery process which increases the quantity of alcohol produced and recovered per quantity of fermentation broth dried. Thus, the invention allows for production and recovery of C3-C6 alcohols at low capital and reduced operating costs.
    Type: Application
    Filed: August 21, 2014
    Publication date: December 11, 2014
    Applicant: GEVO, INC.
    Inventors: William A. Evanko, Aharon M. Eyal, David A. Glassner, Fudu Miao, Kent Evans, Andrew C. Hawkins, Aristos A. Aristidou, Patrick R. Gruber
  • Patent number: 8895272
    Abstract: Methods for producing a biofuel are provided. Also provided are biocatalysts that convert a feedstock to a biofuel.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: November 25, 2014
    Assignee: GEVO, Inc.
    Inventors: Andrew C. Hawkins, David A. Glassner, Thomas Buelter, James L. Wade, Peter Meinhold, Matthew W. Peters, Patrick R. Gruber, William A. Evanko, Aristos A. Aristidou, Marco Landwehr
  • Patent number: 8614077
    Abstract: This invention is directed to methods for recovery of C3-C6 alcohols from dilute aqueous solutions, such as fermentation broths. Such methods provide improved volumetric productivity for the fermentation and allows recovery of the alcohol. Such methods also allow for reduced energy use in the production and drying of spent fermentation broth due to increased effective concentration of the alcohol product by the simultaneous fermentation and recovery process which increases the quantity of alcohol produced and recovered per quantity of fermentation broth dried. Thus, the invention allows for production and recovery of C3-C6 alcohols at low capital and reduced operating costs.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: December 24, 2013
    Assignee: Gevo, Inc.
    Inventors: William A. Evanko, Aharon M. Eyal, David A. Glassner, Fudu Miao, Aristos A. Aristidou, Kent Evans, Patrick R. Gruber, Andrew C. Hawkins, Peter Meinhold, Reid M. Renny Feldman, Uvini Gunawardena, Jun Urano
  • Publication number: 20130273622
    Abstract: Methods for producing a biofuel are provided. Also provided are biocatalysts that convert a feedstock to a biofuel.
    Type: Application
    Filed: April 10, 2013
    Publication date: October 17, 2013
    Inventors: Andrew C. Hawkins, David A. Glassner, Thomas Buelter, James L. Wade, Peter Meinhold, Matthew W. Peters, Patrick R. Gruber, William A. Evanko, Aristos A. Aristidou, Marco Landwehr
  • Publication number: 20130183730
    Abstract: This invention is directed to methods for recovery of C3-C6 alcohols from dilute aqueous solutions, such as fermentation broths. Such methods provide improved volumetric productivity for the fermentation and allows recovery of the alcohol. Such methods also allow for reduced energy use in the production and drying of spent fermentation broth due to increased effective concentration of the alcohol product by the simultaneous fermentation and recovery process which increases the quantity of alcohol produced and recovered per quantity of fermentation broth dried. Thus, the invention allows for production and recovery of C3-C6 alcohols at low capital and reduced operating costs.
    Type: Application
    Filed: November 22, 2011
    Publication date: July 18, 2013
    Applicant: GENO, INC.
    Inventors: William A. Evanko, Aharon M. Eyal, David A. Glassner, Fudu Miao, Aristos A. Aristidou, Kent Evans, Patrick R. Gruber, Andrew C. Hawkins, Peter Meinhold, Reid M. Renny Feldman, Uvini Gunawardena, Jun Urano
  • Patent number: 8431374
    Abstract: Methods for producing a biofuel are provided. Also provided are biocatalysts that convert a feedstock to a biofuel.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: April 30, 2013
    Assignee: Gevo, Inc.
    Inventors: Andrew C. Hawkins, David A. Glassner, Thomas Buelter, James Wade, Peter Meinhold, Matthew W. Peters, Patrick R. Gruber, William A. Evanko, Aristos A. Aristidou, Marco Landwehr
  • Patent number: 8304588
    Abstract: This invention is directed to methods for recovery of C3-C6 alcohols from dilute aqueous solutions, such as fermentation broths. Such methods provide improved volumetric productivity for the fermentation and allows recovery of the alcohol. Such methods also allow for reduced energy use in the production and drying of spent fermentation broth due to increased effective concentration of the alcohol product by the simultaneous fermentation and recovery process which increases the quantity of alcohol produced and recovered per quantity of fermentation broth dried. Thus, the invention allows for production and recovery of C3-C6 alcohols at low capital and reduced operating costs.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: November 6, 2012
    Assignee: Gevo, Inc.
    Inventors: William A. Evanko, Aharon M. Eyal, David A. Glassner, Fudu Miao, Aristos A. Aristidou, Kent Evans, Patrick R. Gruber, Andrew C. Hawkins
  • Patent number: 8283505
    Abstract: This invention is directed to methods for recovery of C3-C6 alcohols from dilute aqueous solutions, such as fermentation broths. Such methods provide improved volumetric productivity for the fermentation and allows recovery of the alcohol. Such methods also allow for reduced energy use in the production and drying of spent fermentation broth due to increased effective concentration of the alcohol product by the simultaneous fermentation and recovery process which increases the quantity of alcohol produced and recovered per quantity of fermentation broth dried. Thus, the invention allows for production and recovery of C3-C6 alcohols at low capital and reduced operating costs.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: October 9, 2012
    Assignee: Gevo, Inc.
    Inventors: William A. Evanko, Aharon M. Eyal, David A. Glassner, Fudu Miao, Aristos A. Aristidou, Kent Evans, Patrick R. Gruber, Andrew C. Hawkins
  • Publication number: 20120107890
    Abstract: This invention is directed to methods for recovery of C3-C6 alcohols from dilute aqueous solutions, such as fermentation broths. Such methods provide improved volumetric productivity for the fermentation and allows recovery of the alcohol. Such methods also allow for reduced energy use in the production and drying of spent fermentation broth due to increased effective concentration of the alcohol product by the simultaneous fermentation and recovery process which increases the quantity of alcohol produced and recovered per quantity of fermentation broth dried. Thus, the invention allows for production and recovery of C3-C6 alcohols at low capital and reduced operating costs.
    Type: Application
    Filed: January 5, 2012
    Publication date: May 3, 2012
    Applicant: GEVO, INC.
    Inventors: William A. Evanko, Aharon M. Eyal, David A. Glassner, Fudu Miao, Aristos A. Aristidou, Kent Evans, Patrick R. Gruber, Andrew C. Hawkins
  • Publication number: 20120107891
    Abstract: This invention is directed to methods for recovery of C3-C6 alcohols from dilute aqueous solutions, such as fermentation broths. Such methods provide improved volumetric productivity for the fermentation and allows recovery of the alcohol. Such methods also allow for reduced energy use in the production and drying of spent fermentation broth due to increased effective concentration of the alcohol product by the simultaneous fermentation and recovery process which increases the quantity of alcohol produced and recovered per quantity of fermentation broth dried. Thus, the invention allows for production and recovery of C3-C6 alcohols at low capital and reduced operating costs.
    Type: Application
    Filed: January 5, 2012
    Publication date: May 3, 2012
    Applicant: GEVO, INC.
    Inventors: William A. Evanko, Aharon M. Eyal, David A. Glassner, Fudu Miao, Aristos A. Aristidou, Kent Evans, Patrick R. Gruber, Andrew C. Hawkins
  • Publication number: 20120064590
    Abstract: This invention is directed to methods for recovery of C3-C6 alcohols from dilute aqueous solutions, such as fermentation broths. Such methods provide improved volumetric productivity for the fermentation and allows recovery of the alcohol. Such methods also allow for reduced energy use in the production and drying of spent fermentation broth due to increased effective concentration of the alcohol product by the simultaneous fermentation and recovery process which increases the quantity of alcohol produced and recovered per quantity of fermentation broth dried. Thus, the invention allows for production and recovery of C3-C6 alcohols at low capital and reduced operating costs.
    Type: Application
    Filed: November 22, 2011
    Publication date: March 15, 2012
    Applicant: GENO, INC.
    Inventors: William A. Evanko, Aharon M. Eyal, David A. Glassner, Fudu Miao, Aristos A. Aristidou, Kent Evans, Patrick R. Gruber, Andrew C. Hawkins
  • Publication number: 20120040080
    Abstract: Methods for producing a biofuel precursor are provided. Also provided are biocatalysts that convert a feedstock to a biofuel precursor.
    Type: Application
    Filed: October 7, 2011
    Publication date: February 16, 2012
    Applicant: GEVO, INC.
    Inventors: Andrew C. Hawkins, David A. Glassner, Thomas Buelter, James Wade, Peter Meinhold, Matthew W. Peters, Patrick R. Gruber, William A. Evanko, Aristos A. Aristidou
  • Patent number: 8101808
    Abstract: This invention is directed to methods for recovery of C3-C6 alcohols from dilute aqueous solutions, such as fermentation broths. Such methods provide improved volumetric productivity for the fermentation and allows recovery of the alcohol. Such methods also allow for reduced energy use in the production and drying of spent fermentation broth due to increased effective concentration of the alcohol product by the simultaneous fermentation and recovery process which increases the quantity of alcohol produced and recovered per quantity of fermentation broth dried. Thus, the invention allows for production and recovery of C3-C6 alcohols at low capital and reduced operating costs.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: January 24, 2012
    Assignee: GEVO, Inc.
    Inventors: William A. Evanko, Aharon M. Eyal, David A. Glassner, Fudu Miao, Aristos A. Aristidou, Kent Evans, Patrick R. Gruber, Andrew C. Hawkins
  • Publication number: 20090246842
    Abstract: Methods and compositions for the production of bio-based material precursors are provided.
    Type: Application
    Filed: February 13, 2009
    Publication date: October 1, 2009
    Applicant: GEVO, INC.
    Inventors: Andrew C. HAWKINS, Matthew W. PETERS, Peter MEINHOLD, Thomas BUELTER, David A. GLASSNER, Patrick R. GRUBER, James WADE