Patents by Inventor David C. Walther

David C. Walther 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: 20220024824
    Abstract: Porous, binderless ceramic surface modification materials are described, and applications of use thereof. The ceramic material may include a metal oxide and/or metal hydroxide, and/or hydrates thereof, on a substrate surface.
    Type: Application
    Filed: December 12, 2019
    Publication date: January 27, 2022
    Inventors: Lance R. BROCKWAY, David C. WALTHER, Nicholas J. MONTES
  • Publication number: 20210268778
    Abstract: Methods are described for modification of a substrate with a surface modification material that includes a conversion layer deposited on the substrate surface and a deposited layer that is situated over the conversion layer. The methods include a conversion step and a deposition step that occur without intermediate processing steps in a process fluid that includes a metal and an organic substance.
    Type: Application
    Filed: June 28, 2019
    Publication date: September 2, 2021
    Inventors: Lance R. Brockway, David C. Walther
  • Publication number: 20210247126
    Abstract: Modified surfaces and methods of use thereof are provided for preventing or delaying onset of phase changes, such as condensation or frost formation. The invention relates to surfaces that increase the energy barrier to or driving force required for nucleation phase changes, such as, but not limited to, condensation and crystallization, and methods of use thereof, such as anti-fog glass applications and prevention of condensation on heat exchangers in systems that only require sensible cooling.
    Type: Application
    Filed: May 9, 2019
    Publication date: August 12, 2021
    Inventors: Lance R. Brockway, David C. Walther
  • Patent number: 11041665
    Abstract: Methods and systems are provided for heat transfer from a process fluid, such as humid air, to liquid droplets that are generated by contact of a heat transfer surface with the process fluid. The heat transfer surface rapidly ejects liquid droplets, which may then be coalesced and removed, thereby cooling the process fluid. Enhanced methods of condensate collection are described.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: June 22, 2021
    Assignee: Nelumbo Inc.
    Inventors: Lance R. Brockway, David C. Walther
  • Publication number: 20200124312
    Abstract: Control systems are provided that provide thermodynamically decoupled control of temperature and relative humidity and/or reduce or prevent frost formation or remove previously-formed frost. The control systems herein may be included as a component of a heating, ventilation, air conditioning, and refrigeration system that includes a heat exchanger.
    Type: Application
    Filed: January 11, 2018
    Publication date: April 23, 2020
    Inventors: Lance R. Brockway, David C. Walther, James Ma
  • Publication number: 20190366381
    Abstract: Nanostructured coating materials, methods of their production, and methods of use in a variety of applications are described. The nanostructured materials described herein include one or more 2+ and/or 3+ metal ion(s), optionally in a ternary phase, on a substrate.
    Type: Application
    Filed: September 19, 2017
    Publication date: December 5, 2019
    Applicant: Nelumbo Inc.
    Inventors: Lance R. Brockway, David C. Walther
  • Publication number: 20190204030
    Abstract: Coating compositions are provided that eject droplets of condensed fluid from a surface. The coatings include a nanostructured coating layer and in some embodiments, also include a hydrophobic layer deposited thereon. The coating materials eject droplets from the surface in the presence of non-condensing gases such as air and may be deployed under conditions of supersaturation of the condensed fluid to be ejected. A heat exchanger design utilizing the coating is described herein.
    Type: Application
    Filed: September 19, 2017
    Publication date: July 4, 2019
    Applicant: Nelumbo Inc.
    Inventors: Lance R. Brockway, David C. Walther
  • Publication number: 20160348134
    Abstract: Systems and methods for producing bioproducts are shown. The systems and methods herein can be configured and used in an integrated biorefinery. The integrated biorefinery may comprise a sugar production facility such as a sugar mill, a production facility for one or more bioproduct(s) such as butanol, and optionally an ethanol production facility employing the system and method.
    Type: Application
    Filed: May 30, 2015
    Publication date: December 1, 2016
    Applicant: COBALT TECHNOLOGIES INC.
    Inventors: Stacy M. Burns-Guydish, Anthony F. Cann, Dhruti Dalal, Lawrence W. Fry, Michael S. Hershkowitz, William F. McDonald, Andrew D. Meyer, Victor O. Nava-Salgado, Brandon T. Olson, Ishmael M. Sonico, David C. Walther, Yongming Zhu
  • Patent number: 9074173
    Abstract: Processes and systems for production of bioproducts such as biofuels are provided. The bioproduct production processes and systems utilize pretreatment of a carbohydrate-containing feedstock to produce soluble sugar molecules and continuous conversion of the pretreated feedstock to a bioproduct by an immobilized fermenting microorganism.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: July 7, 2015
    Assignee: Cobalt Technologies Inc.
    Inventors: David C. Walther, Hendrik J. Meerman, Stacy M. Burns-Guydish, Richard W. Wilson, Eamon T. Hogg, Gregory W. Luli, Robert Eckert
  • Publication number: 20130337527
    Abstract: Processes and systems for production of bioproducts such as biofuels are provided. The bioproduct production processes and systems utilize pretreatment of a carbohydrate-containing feedstock to produce soluble sugar molecules and continuous conversion of the pretreated feedstock to a bioproduct by an immobilized fermenting microorganism.
    Type: Application
    Filed: July 1, 2013
    Publication date: December 19, 2013
    Inventors: David C. Walther, Hendrik J. Meerman, Stacy M. Burns-Guydish, Richard W. Wilson, Eamon T. Hogg, Gregory W. Luli, Robert Eckert
  • Publication number: 20130236941
    Abstract: Systems and methods for producing bioproducts are shown. The systems and methods herein can be configured and used in an integrated biorefinery. The integrated biorefinery may comprise a sugar production facility such as a sugar mill, a production facility for one or more bioproduct(s) such as butanol, and optionally an ethanol production facility employing the system and method.
    Type: Application
    Filed: March 11, 2013
    Publication date: September 12, 2013
    Applicant: COBALT TECHNOLOGIES INC.
    Inventors: Stacy M. Burns-Guydish, Anthony F. Cann, Dhruti Dalal, Lawrence W. Fry, Michael S. Hershkowitz, William F. McDonald, Andrew D. Meyer, Victor O. Nava-Salgado, Brandon T. Olson, Ishmael M. Sonico, David C. Walther, Yongming Zhu
  • Patent number: 8497105
    Abstract: Processes and systems for production of bioproducts such as biofuels are provided. The bioproduct production processes and systems utilize pretreatment of a carbohydrate-containing feedstock to produce soluble sugar molecules and continuous conversion of the pretreated feedstock to a bioproduct by an immobilized fermenting microorganism.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: July 30, 2013
    Assignee: Cobalt Technologies, Inc.
    Inventors: David C. Walther, Hendrik J. Meerman, Stacy M. Burns-Guydish, Richard W. Wilson, Eamon T. Hogg, Gregory W. Luli, Robert Eckert
  • Publication number: 20130164804
    Abstract: Methods are provided for preparing a hydrolysate containing soluble sugar molecules from biomass that contains cellulose and hemicellulose. Hemicellulose sugars are extracted in the process, and the resulting hydrolysate may be used to support microbial fermentation to produce products of interest.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 27, 2013
    Inventors: David C. Walther, William F. McDonald
  • Patent number: 8460906
    Abstract: Methods for mutagenizing and selecting microorganisms with increased product tolerance are provided. Additionally, methods and systems are disclosed for culturing the microorganisms to produce products.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: June 11, 2013
    Assignee: Cobalt Technologies, Inc.
    Inventors: Pamela Reilly Contag, Stacy M. Burns-Guydish, Hendrikus J. Meerman, David C. Walther, John C. Chen, Alvin W. Nienow, Ian Maddox
  • Publication number: 20110318798
    Abstract: Methods are provided for conditioning an inhibitor-containing composition, such as a cellulosic biomass hydrolysate, to remove inhibitors of microbial growth and/or product production. The methods include precipitation of inhibitors by formation of complexes with metal salts, such as aluminum sulfate and ferric chloride.
    Type: Application
    Filed: June 24, 2011
    Publication date: December 29, 2011
    Applicant: Cobalt Technologies, Inc.
    Inventors: David C. Walther, Eamon T. Hogg, Gregory W. Luli, Robert Eckert, Jeffrey D. Keating
  • Publication number: 20110318796
    Abstract: Methods are provided for preparing a hydrolysate containing soluble sugar molecules from biomass that contains cellulose and hemicellulose. Hemicellulose sugars are extracted in the process, and the resulting hydrolysate may be used to support microbial fermentation to produce products of interest.
    Type: Application
    Filed: June 17, 2011
    Publication date: December 29, 2011
    Applicant: Cobalt Technologies, Inc., a Delaware Corporation
    Inventor: David C. Walther
  • Patent number: 8026485
    Abstract: An infrared sensor with at least one cantilever beam functionalized with chitin, chitosan or their derivatives that can be tailored to be sensitive to certain IR bands for detection and does not require cooling is described. The functional layers expand differently than the structural layer of the cantilever beam causing the beam to bend in response to exposure to infrared radiation. The sensor can be adapted to optical, piezoresistive, capacitive and piezoelectric methods of detect beam deflection. Sensitivity can be increased with a reflective layer to increase the absorption of infrared radiation by the functional layer.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: September 27, 2011
    Assignee: The Regents of the University of California
    Inventors: Michael T. Mueller, Albert P. Pisano, Robert Azevedo, David C. Walther, David R. Myers, Matthew Wasilik
  • Publication number: 20110129887
    Abstract: Methods for adapting or selecting microorganisms with increased product tolerance are provided Additionally, a bioreactor capable of operation in either packed bed or fluidized bed is disclosed along with methods to use the bioreactor for culturing microorganisms adapted or selected increased product tolerance
    Type: Application
    Filed: April 9, 2009
    Publication date: June 2, 2011
    Inventors: Pamela Reilly Contag, Stacy M. Burns-Guydish, Hendrikus J. Meerman, David C. Walther, John C. Chen, Alvin w. Nienow, Ian Maddox
  • Publication number: 20100330633
    Abstract: Processes and systems for production of bioproducts such as biofuels are provided. The bioproduct production processes and systems utilize pretreatment of a carbohydrate-containing feedstock to produce soluble sugar molecules and continuous conversion of the pretreated feedstock to a bioproduct by an immobilized fermenting microorganism.
    Type: Application
    Filed: June 24, 2010
    Publication date: December 30, 2010
    Applicant: Cobalt Technologies, Inc.
    Inventors: David C. Walther, Hendrik J. Meerman, Stacy M. Burns-Guydish, Richard W. Wilson, Eamon T. Hogg, Gregory W. Luli, Robert Eckert
  • Publication number: 20100243904
    Abstract: An infrared sensor with at least one cantilever beam functionalized with chitin, chitosan or their derivatives that can be tailored to be sensitive to certain IR bands for detection and does not require cooling is described. The functional layers expand differently than the structural layer of the cantilever beam causing the beam to bend in response to exposure to infrared radiation. The sensor can be adapted to optical, piezoresistive, capacitive and piezoelectric methods of detect beam deflection. Sensitivity can be increased with a reflective layer to increase the absorption of infrared radiation by the functional layer.
    Type: Application
    Filed: March 16, 2010
    Publication date: September 30, 2010
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Michael T. Mueller, Albert P. Pisano, Robert Azevedo, David C. Walther, David R. Myers, Matthew Wasilik