Patents by Inventor Moungi G. Bawendi

Moungi G. Bawendi 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: 20190307390
    Abstract: Systems and methods for measuring autofluorescent signals from lipopigments associated with various disease states are disclosed.
    Type: Application
    Filed: April 9, 2019
    Publication date: October 10, 2019
    Applicants: Massachusetts Institute of Technology, The General Hospital Corporation
    Inventors: Moungi G. Bawendi, Rakesh Jain, Oliver Thomas Bruns, Jessica Ann Carr, Klaus van Leyen, Wilhelmus Kwanten, Ivy Xiaoyu Chen
  • Publication number: 20190239750
    Abstract: A method and system for medical imaging employs an excitation source configured to cause an object having a plurality of cells to at least one of emit, reflect, and fluoresce light. An optical receptor is employed that is configured to receive the light from the object. A filter assembly receives the light from the optical receptor and filters the light. An image processor having a field of view (FOV) substantially greater than a diameter of a cell of the object and an analysis resolution substantially matched to the diameter of a cell of the object that receives the filtered light from the filter and analyzes the filtered light corresponding to each cell in the FOV. A feedback system is provided that is configured to provide an indication of a state of each cell in the FOV and a location of a cell in the FOV meeting a predetermined condition.
    Type: Application
    Filed: April 15, 2019
    Publication date: August 8, 2019
    Inventors: Moungi G. Bawendi, Jorge M. Ferrer, W. David Lee, Lisa F. Marshall, David G. Kirsch
  • Publication number: 20190244721
    Abstract: Multifunctional nanoparticles can include two or more different populations of nanocrystals that impart a combination of properties arising from the constituent populations in a single, multifunctional nanoparticle.
    Type: Application
    Filed: February 23, 2019
    Publication date: August 8, 2019
    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Ou CHEN, Moungi G. BAWENDI
  • 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
  • Patent number: 10276735
    Abstract: A semiconductor nanocrystal include a first I-III-VI semiconductor material and have a luminescence quantum yield of at least 10%, at least 20%, or at least 30%. The nanocrystal can be substantially free of toxic elements. Populations of the nanocrystals can have an emission FWHM of no greater than 0.35 eV.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: April 30, 2019
    Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Peter Matthew Allen, Moungi G. Bawendi
  • Publication number: 20190079010
    Abstract: Systems and methods for measuring short wave infrared fluorescence and autofluorescent signals are disclosed.
    Type: Application
    Filed: March 10, 2017
    Publication date: March 14, 2019
    Applicants: Massachusetts Institute of Technology, The General Hospital Corporation d/b/a Massachusets General Hospital
    Inventors: Moungi G. Bawendi, Oliver Thomas Bruns, Jessica Ann Carr, Klaus van Leyen, Yi Zheng, Marianne Aellen
  • Patent number: 10226427
    Abstract: Microparticles and nanoparticles and compositions thereof are provided. The microparticles and nanoparticles and compositions may be used for the treatment of musculoskeletal disease, such as osteoarthritis and injury such as trauma.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: March 12, 2019
    Assignee: Massachusetts Institute of Technology
    Inventors: Ambika Goel Bajpayee, Alan Grodzinsky, Cliff Richard Wong, Moungi G. Bawendi, Rohit N. Karnik
  • Patent number: 10225906
    Abstract: A light emitting device includes a semiconductor nanocrystal in a layer. The layer can be a monolayer of semiconductor nanocrystals. The monolayer can form a pattern on a substrate.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: March 5, 2019
    Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Seth Coe-Sullivan, Jonathan S. Steckel, LeeAnn Kim, Moungi G. Bawendi, Vladimir Bulovic
  • Publication number: 20190067611
    Abstract: An electro-optical device can include a plurality of semiconductor nanocrystals. In some circumstances, the device can omit an electron transporting layer.
    Type: Application
    Filed: August 6, 2018
    Publication date: February 28, 2019
    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Alexi ARANGO, Vladimir BULOVIC, David OERTEL, Moungi G. BAWENDI
  • Patent number: 10217540
    Abstract: Multifunctional nanoparticles can include two or more different populations of nanocrystals that impart a combination of properties arising from the constituent populations in a single, multifunctional nanoparticle.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: February 26, 2019
    Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Ou Chen, Moungi G. Bawendi
  • Patent number: 10202546
    Abstract: In this invention, polyimidazole ligands (PILs) incorporating pendant imidazole moieties for nanocrystal binding and either sulfonatebetaine, carboxybetaine, or phosphocholinebetaine moieties for water-solubilization have been developed. Greatly enhanced stability of nanocrystals (both over time and in wide pH range) was achieved by incorporating multi-dentate imidazole moieties which provide strong coordination of the ligand to the nanocrystal surface and prevent aggregation of nanocrystals. Synthesis of betaine PILs was developed by modifying the synthesis of recently developed PEG containing poly imidazole ligands (PEG PILs). These nanocrystals are compact, water soluble, and biocompatible.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: February 12, 2019
    Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Hee-Sun Han, Wenhao Liu, Moungi G. Bawendi
  • Publication number: 20190022258
    Abstract: A method of preparing a coated nanoparticle can include decomposing a compound to produce a nanoparticle, oxidizing the nanoparticle to produce an oxidized nanoparticle, and coating the oxidized nanoparticle with a zwitterionic ligand to produce the coated nanoparticle. The coated nanoparticle or the nanoparticle can be used in magnetic resonance imaging.
    Type: Application
    Filed: October 1, 2018
    Publication date: January 24, 2019
    Applicant: Massachusetts Institute of Technology
    Inventors: He Wei, Oliver T. Bruns, Ou Chen, Moungi G. Bawendi
  • 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
  • Patent number: 10145539
    Abstract: A solid state lighting device including a light source capable of emitting white light including a blue spectral component and having a deficiency in a spectral region, and an optical component that is positioned to receive at least a portion of the light generated by the light source, the optical component comprising an optical material for converting at least a portion of the blue spectral component of the light to one or more predetermined wavelengths such that light emitted by the solid state lighting device includes light emission from the light source supplemented with light emission at one or more predetermined wavelengths, wherein the optical material comprises quantum confined semiconductor nanoparticles. Also disclosed is lighting fixture, a cover plate for a lighting fixture and a method.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: December 4, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seth Coe-Sullivan, John R. Linton, Sridhar Sadasivan, Emily M. Squires, Moungi G. Bawendi
  • Patent number: 10113112
    Abstract: A method of preparing a core-shell nanorod can include growing a shell of a core-shell nanorod (M1X1)M2X2 in a solution through a slow-injection of M2 precursor solution and X2 precursor solution, wherein the core-shell nanorod includes a M1X1 core.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: October 30, 2018
    Assignee: Massachusetts Institute of Technology
    Inventors: Igor Coropceanu, Moungi G. Bawendi
  • Patent number: 10109760
    Abstract: The size-dependent band-gap tunability and solution processability of nanocrystals (NCs) make them attractive candidates for optoelectronic applications. One factor that presently limits the device performance of NC thin films is sub-bandgap states, also referred to as trap states. Trap states can be controlled by surface treatment of the nanocrystals.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: October 23, 2018
    Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Gyuweon Hwang, Donghun Kim, Jose M. Cordero, Mark W. B. Wilson, Chia-Hao M. Chuang, Jeffrey C. Grossman, Moungi G. Bawendi
  • Patent number: 10086094
    Abstract: A method of preparing a coated nanoparticle can include decomposing a compound to produce a nanoparticle, oxidizing the nanoparticle to produce an oxidized nanoparticle, and coating the oxidized nanoparticle with a zwitterionic ligand to produce the coated nanoparticle. The coated nanoparticle or the nanoparticle can be used in magnetic resonance imaging.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: October 2, 2018
    Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: He Wei, Oliver T. Bruns, Ou Chen, Moungi G. Bawendi
  • Publication number: 20180240606
    Abstract: A photovoltaic device can include a first charge transporting layer including a plurality of semiconductor nanocrystals in contact with a first electrode, a second charge transporting layer in contact with a second electrode and an absorber layer including a perovskite material between the first charge transporting layer and the second charge transporting layer. The plurality of semiconductor nanocrystals can include a core and a shell, wherein the core has a first semiconductor material and the shell has a second semiconductor material.
    Type: Application
    Filed: August 14, 2016
    Publication date: August 23, 2018
    Applicant: Massachusetts Institute of Technology
    Inventors: Moungi G. BAWENDI, Whitney R. HESS
  • Patent number: 10053622
    Abstract: A composition can include a first moiety capable of being excited to an excited state, and a second moiety capable of accepting excited state energy from the first moiety. The second moiety is capable of emitting light with a FWHM of 15 nm or less when excited. The second moiety can be a J-aggregate and the first moiety can be a semiconductor nanocrystal.
    Type: Grant
    Filed: July 4, 2013
    Date of Patent: August 21, 2018
    Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Jonathan E. Halpert, Jonathan Tischler, Moungi G. Bawendi, Vladimir Bulovic
  • Patent number: 10043993
    Abstract: An electro-optical device can include a plurality of semiconductor nanocrystals. In some circumstances, the device can omit an electron transporting layer.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: August 7, 2018
    Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Alexi Arango, Vladimir Bulovic, David Oertel, Moungi G. Bawendi