Patents by Inventor Daniel G. Nocera

Daniel G. Nocera 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: 20200255870
    Abstract: Systems and methods for fixing carbon using bacteria are described. In one embodiment, a system includes a reactor chamber with a solution contained therein. The solution may include hydrogen (H2), carbon dioxide (CO2), bioavailable nitrogen, and a chemolithoautotrophic bacteria. The system may also include a pair of electrodes that split water contained within the solution to form the hydrogen. Additionally, the system may be operated so that a concentration of the bioavailable nitrogen in the solution is below a threshold nitrogen concentration to cause the chemolithoautotrophic bacteria to produce a product.
    Type: Application
    Filed: February 18, 2020
    Publication date: August 13, 2020
    Applicant: President and Fellows of Harvard College
    Inventors: Brendan Cruz Colón, Chong Liu, Marika Ziesack, Pamela Ann Silver, Daniel G. Nocera
  • Publication number: 20200102254
    Abstract: The disclosure provides a bioreactor system for conducting nitrogen fixation with renewable electricity to produce an engineered soil microbiome enriched in ammonia and carbon. The disclosure further provides an inorganic-biological hybrid bioreactor system that couples the generation of H2 by electricity-dependent H2O-splitting with the nitrogen-fixing capabilities of autotrophic, N2-fixing microorganisms to cultivate NH3-enriched and/or carbon-enriched biomass. The disclosure also provides methods for using NH3-enriched and/or carbon-enriched biomass for applications, such as, biofertilizers for improving the characteristics and performance of soils, e.g., to enhance the yield of agricultural crops. The disclosure further provides biofertilizers, as well as engineered soils and seeds augmented with a biofertilizer.
    Type: Application
    Filed: May 17, 2018
    Publication date: April 2, 2020
    Applicant: President and Fellows of Harvard College
    Inventors: Kelsey Sakimoto, Daniel G, Nocera, Pamela Ann Silver, Chong Liu, Brendan Cruz Colon
  • Patent number: 10597681
    Abstract: Systems and methods for fixing carbon using bacteria are described. In one embodiment, a system includes a reactor chamber with a solution contained therein. The solution may include hydrogen (H2), carbon dioxide (C02), bioavailable nitrogen, and a chemolithoautotrophic bacteria. The system may also include a pair of electrodes that split water contained within the solution to form the hydrogen. Additionally, the system may be operated so that a concentration of the bioavailable nitrogen in the solution is below a threshold nitrogen concentration to cause the chemolithoautotrophic bacteria to produce a product.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: March 24, 2020
    Assignee: President and Fellows of Harvard College
    Inventors: Brendan Cruz Colón, Chong Liu, Marika Ziesack, Pamela Ann Silver, Daniel G. Nocera
  • Publication number: 20190218455
    Abstract: A semiconductor nanocrystal can have a photoluminescent quantum yield of at least 90%, at least 95%, or at least 98%. The nanocrystal can be made by sequentially contacting a nanocrystal core with an M-containing compound and an X donor, where at least one of the M-containing compound and the X donor is substoichiometric with respect to forming a monolayer on the nanocrystal core.
    Type: Application
    Filed: January 7, 2019
    Publication date: July 18, 2019
    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Andrew B. Greytak, Wenhao Liu, Peter M. Allen, Moungi G. Bawendi, Daniel G. Nocera
  • Publication number: 20190202707
    Abstract: Systems and methods for producing ammonia are described. In one embodiment, hydrogen, carbon dioxide, and nitrogen are dissolved in a solution. A glutamine synthetase inhibitor and autotrophic diazotroph bacteria are also placed in the solution.
    Type: Application
    Filed: June 14, 2017
    Publication date: July 4, 2019
    Applicant: President and Fellows of Harvard College
    Inventors: Brendan Cruz Colon, Chong Liu, Daniel G. Nocera, Pamela Ann Silver
  • Patent number: 10174243
    Abstract: A semiconductor nanocrystal can have a photoluminescent quantum yield of at least 90%, at least 95%, or at least 98%. The nanocrystal can be made by sequentially contacting a nanocrystal core with an M-containing compound and an X donor, where at least one of the M-containing compound and the X donor is substoichiometric with respect to forming a monolayer on the nanocrystal core.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: January 8, 2019
    Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Andrew B. Greytak, Wenhao Liu, Peter M. Allen, Moungi G. Bawendi, Daniel G. Nocera
  • Publication number: 20180265898
    Abstract: Systems and methods for fixing carbon using bacteria are described. In one embodiment, a system includes a reactor chamber with a solution contained therein. The solution may include hydrogen (H2), carbon dioxide (C02), bioavailable nitrogen, and a chemolithoautotrophic bacteria. The system may also include a pair of electrodes that split water contained within the solution to form the hydrogen. Additionally, the system may be operated so that a concentration of the bioavailable nitrogen in the solution is below a threshold nitrogen concentration to cause the chemolithoautotrophic bacteria to produce a product.
    Type: Application
    Filed: September 14, 2016
    Publication date: September 20, 2018
    Applicant: President and Fellows of Harvard College
    Inventors: Brendan Cruz Colón, Chong Liu, Marika Ziesack, Pamela Ann Silver, Daniel G. Nocera
  • Patent number: 8891575
    Abstract: An optical resonator can include an optical feedback structure disposed on a substrate, and a composite including a matrix including a chromophore. The composite disposed on the substrate and in optical communication with the optical feedback structure. The chromophore can be a semiconductor nanocrystal. The resonator can provide laser emission when excited.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: November 18, 2014
    Assignee: Massachusetts Institute of Technology
    Inventors: Preston T. Snee, Yin Thai Chan, Daniel G. Nocera, Moungi G. Bawendi
  • Patent number: 8748219
    Abstract: The disclosed device is a solid state organic semiconductor VCSEL in which the microcavity is composed of metal and dielectric mirrors and the gain layer is only ?/2n thick. The gain layer comprises a thermally evaporated 156.7 nm thick film of the laser dye DCM doped (2.5% v/v) into an Alq3 host matrix. The microcavity consists of 2 mirrors, a dielectric Bragg reflector (DBR) sputter-coated onto a quartz substrate as the mirror through which the organic gain layer is optically excited and laser emission is collected and a silver mirror that is thermally evaporated on top of the Alq3:DCM film. The device exhibits laser action from the DCM both when the DCM molecules are excited directly at 535 nm and via Förster Resonance Energy Transfer (FRET) from the Alq3 (excited at 404 nm) with laser thresholds of 4.9 ?J/cm2 and 14.2 ?J/cm2 respectively.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: June 10, 2014
    Assignee: Massachusetts Institute of Technology
    Inventors: Jonathan R. Tischler, Elizabeth R. Young, Daniel G. Nocera, Vladimir Bulovic
  • Patent number: 8361288
    Abstract: Compositions, electrodes, systems, and/or methods for water electrolysis and other electrochemical techniques are provided. In some cases, the compositions, electrodes, systems, and/or methods are for electrolysis which can be used for energy storage, particularly in the area of energy conversion, and/or production of oxygen, hydrogen, and/or oxygen and/or hydrogen containing species. In some embodiments, the water for electrolysis comprises at least one impurity and/or at least one additive which has little or no substantially affect on the performance of the electrode.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: January 29, 2013
    Assignee: Sun Catalytix Corporation
    Inventors: Steven Y. Reece, Arthur J. Esswein, Kimberly Sung, Zachary I. Green, Daniel G. Nocera
  • Publication number: 20120318679
    Abstract: The present invention relates generally to methods and compositions comprising macrocycles. In some cases, at least one beta-position of the macrocycle comprises an electron-withdrawing group, for example, a halide. In some embodiments, methods for forming and/or modifying a macrocycle using microwave energy are provided. In some embodiments, the compositions are employed in catalysis reactions.
    Type: Application
    Filed: May 17, 2012
    Publication date: December 20, 2012
    Applicant: Massachusetts Institute of Technology
    Inventors: Daniel G. Nocera, Dilek Dogutan Kiper, Robert McGuire, JR., Changhoon Lee
  • Patent number: 8313957
    Abstract: Binding an analyte can cause a change in fluorescence emission of a sensor. The change in fluorescence can be related to the amount of analyte present. The sensor can include a semiconductor nanocrystal linked to a fluorescent moiety. Upon excitation, the fluorescent moiety can transfer energy to the semiconductor nanocrystal, or vice versa.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: November 20, 2012
    Assignee: Massachusetts Institute of Technology
    Inventors: Preston T. Snee, Rebecca C. Somers, Daniel G. Nocera, Moungi G. Bawendi
  • Publication number: 20120156577
    Abstract: Methods of forming electrodes for electrolysis of water and other electrochemical techniques are provided. In some embodiments, the electrode comprising a current collector and a catalytic material. The method of forming the electrode may comprising immersing a current collector comprising a metallic species in an oxidation state of zero in a solution comprising anionic species, and causing a catalytic material to form on the current collector by application of a voltage to the current collector, wherein the catalytic material comprises metallic species in an oxidation state greater than zero and the anionic species.
    Type: Application
    Filed: August 19, 2011
    Publication date: June 21, 2012
    Applicant: Massachusetts Institute of Technology
    Inventors: Vladimir Bulovic, Daniel G. Nocera, Elizabeth R. Young, Ronny Costi, Sarah Paydavosi
  • Publication number: 20120094390
    Abstract: Binding an analyte can cause a change in fluorescence emission of a sensor. The change in fluorescence can be related to the amount of analyte present. The sensor can include a semiconductor nanocrystal linked to a fluorescent moiety. Upon excitation, the fluorescent moiety can transfer energy to the semiconductor nanocrystal, or vice versa.
    Type: Application
    Filed: December 19, 2011
    Publication date: April 19, 2012
    Inventors: Preston T. Snee, Rebecca C. Somers, Daniel G. Nocera, Moungi G. Bawendi
  • Publication number: 20120049119
    Abstract: A semiconductor nanocrystal can have a photoluminescent quantum yield of at least 90%, at least 95%, or at least 98%. The nanocrystal can be made by sequentially contacting a nanocrystal core with an M-containing compound and an X donor, where at least one of the M-containing compound and the X donor is substoichiometric with respect to forming a monolayer on the nanocrystal core.
    Type: Application
    Filed: August 24, 2010
    Publication date: March 1, 2012
    Applicant: Massachusetts Institute of Technology
    Inventors: Andrew B. Greytak, Wenhao Liu, Peter M. Allen, Moungi G. Bawendi, Daniel G. Nocera
  • Patent number: 8101430
    Abstract: Binding an analyte can cause a change in fluorescence emission of a sensor. The change in fluorescence can be related to the amount of analyte present. The sensor can include a semiconductor nanocrystal linked to a fluorescent moiety. Upon excitation, the fluorescent moiety can transfer energy to the semiconductor nanocrystal, or vice versa.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: January 24, 2012
    Assignee: Massachusetts Institute of Technology
    Inventors: Preston T. Snee, Rebecca C. Somers, Daniel G. Nocera, Moungi G. Bawendi
  • Publication number: 20110243849
    Abstract: The present disclosure provides photoactive polypeptides. A subject photoactive polypeptide is useful in a variety of applications, which are also provided.
    Type: Application
    Filed: March 31, 2011
    Publication date: October 6, 2011
    Inventors: Michael A. Marletta, Michael B. Winter, Emily J. McLaurin, Steven Y. Reece, Charles Olea, JR., Daniel G. Nocera
  • Publication number: 20110235668
    Abstract: The disclosed device is a solid state organic semiconductor VCSEL in which the microcavity is composed of metal and dielectric mirrors and the gain layer is only ?/2n thick. The gain layer comprises a thermally evaporated 156.7 nm thick film of the laser dye DCM doped (2.5% v/v) into an Alq3 host matrix. The microcavity consists of 2 mirrors, a dielectric Bragg reflector (DBR) sputter-coated onto a quartz substrate as the mirror through which the organic gain layer is optically excited and laser emission is collected and a silver mirror that is thermally evaporated on top of the Alq3:DCM film. The device exhibits laser action from the DCM both when the DCM molecules are excited directly at 535 nm and via Förster Resonance Energy Transfer (FRET) from the Alq3 (excited at 404 nm) with laser thresholds of 4.9 ?J/cm2 and 14.2 ?J/cm2 respectively.
    Type: Application
    Filed: September 8, 2009
    Publication date: September 29, 2011
    Applicant: Massachusetts Institute of Technology
    Inventors: Jonathan R. Tischler, Elizabeth R. Young, Daniel G. Nocera, Vladimir Bulovic
  • Publication number: 20110144324
    Abstract: The present invention relates generally to methods and compositions comprising macrocycles. In some embodiments, the present invention provides methods for modifying macrocycles comprising a pendant group. In some cases, the pendent group comprises a hydrolyzable group. The present invention also provides methods for metallating a macrocycle using microwave energy, in some embodiments.
    Type: Application
    Filed: December 14, 2010
    Publication date: June 16, 2011
    Applicant: Massachusetts Institute of Technology
    Inventors: Daniel G. Nocera, Dilek Kiper Dogutan
  • Publication number: 20110048962
    Abstract: Compositions, electrodes, systems, and/or methods for water electrolysis and other electrochemical techniques are provided. In some cases, the compositions, electrodes, systems, and/or methods are for electrolysis which can be used for energy storage, particularly in the area of energy conversion, and/or production of oxygen, hydrogen, and/or oxygen and/or hydrogen containing species. In some embodiments, the water for electrolysis comprises at least one impurity and/or at least one additive which has little or no substantially affect on the performance of the electrode.
    Type: Application
    Filed: August 27, 2010
    Publication date: March 3, 2011
    Applicant: Sun Catalytix Corporation
    Inventors: Steven Y. Reece, Arthur J. Esswein, Kimberly Sung, Zachary I. Green, Daniel G. Nocera