Patents Examined by Matthew E Hoban
  • Piezoelectric composition and piezoelectric device
    Patent number: 11545613
    Abstract: A piezoelectric composition comprises an oxide having a perovskite structure, wherein the oxide contains bismuth, barium, iron and titanium; the X-ray diffraction pattern of the piezoelectric composition after a polarization treatment has a first peak and a second peak in the range of the diffraction angle 2? of 38.6° or more and 39.6° or less; the diffraction angle 2? of the first peak is smaller than the diffraction angle 2? of the second peak; an intensity of the first peak is represented as IL; an intensity of the second peak is represented as IH; and IH/IL is 0.00 or more and 2.00 or less.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: January 3, 2023
    Assignee: TDK Corporation
    Inventor: Masashi Kitazaki
  • Quantum dot-containing composition, wavelength conversion member, backlight unit, and liquid crystal display device
    Patent number: 11535761
    Abstract: A quantum dot-containing composition includes a quantum dot, a ligand having coordinating groups, which coordinates to the surface of the quantum dots, and the ligand is represented by Formula I. In Formula I, A is an organic group including one or more coordinating groups selected from an amino group, a carboxy group, a mercapto group, a phosphine group, and a phosphine oxide group, Z is an (n+m+l)-valent organic linking group, R is a group including an alkyl group, an alkenyl group, or an alkynyl group each of which may have a substituent, Y is a group having a polymer chain which has a degree of polymerization of 3 or greater and which includes a polyacrylate skeleton or the like. n and m are each independently 1 or greater, l is 0 or greater, and n+m+l is integer 3 or greater. At least two coordinating groups are included in a molecule.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: December 27, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Naoyoshi Yamada, Ryo Satake, Natsuru Chikushi, Kyohei Arayama
  • Mining unexplored chemistries for phosphors for high-color-quality whitelight-emitting diodes
    Patent number: 11532770
    Abstract: A light emitting diode (LED) assembly includes an LED light source having a first light output with a characteristic spectrum and at least one phosphor through which the first light output passes. The phosphor includes the quaternary compound M-Li—Al—O, where M is Ba, Sr, or Ca, activated by Eu2+ or Ce3+.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: December 20, 2022
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Shyue Ping Ong, Jungmin Ha, Zhenbin Wang, Joanna McKittrick, Won Bin Im, Yoon Hwa Kim
  • Perovskite-polymer composites and methods
    Patent number: 11530303
    Abstract: Perovskite-polymer composites including perovskite nanocrystals dispersed in a polymer matrix, wherein the perovskite nanocrystals have an average size of from about nm to about 20 nm. Methods for producing a perovskite-polymer composites that may include contacting a solid material comprising a polymer matrix with a solution comprising a perovskite precursor; allowing the solution to penetrate the solid material to yield a swollen solid material comprising the perovskite precursor dispersed within the polymer matrix; optionally contacting the swollen solid material with an antisolvent; and annealing the swollen solid material to crystallize the perovskite precursor and to yield the perovskite-polymer composite comprising perovskite nanocrystals dispersed in the polymer matrix.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: December 20, 2022
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventors: Yajie Dong, Shin-Tson Wu, Caicai Zhang, Ziqian He
  • Precursor based method of synthesis and fabrication of hybrid lighting phosphors with high quantum efficiency, and significantly enhanced thermal and photostability
    Patent number: 11518933
    Abstract: Highly thermal and photo-stable inorganic-organic hybrid phosphor compounds, in which a copper (I) halide module is coordinated with a multi-dentate organic ligand. Also disclosed are semiconductor and light emitting devices comprising these materials, including light emitting diodes, and methods of preparing these materials and devices.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: December 6, 2022
    Assignee: RUTGERS, THE STATE UNIVERSITY OF NEW JERSEY
    Inventors: Jing Li, Yang Fang, Wei Liu
  • Luminescent material and electronic device having a display function using the same
    Patent number: 11512246
    Abstract: A luminescent material includes a particle of an irregular shape. The particle of an irregular shape includes a core of an irregular shape and quantum dots. The quantum dots distribute on the core.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: November 29, 2022
    Assignee: CHIMEI CORPORATION
    Inventors: Yuan-Ren Juang, Szu-Chun Yu, Keng-Chu Lin, Wei-Ta Chen, Yao-Tsung Chuang, Jen-Shrong Uen
  • Method of producing ?-sialon fluorescent material
    Patent number: 11512250
    Abstract: Provided is a method of producing a ?-sialon fluorescent material having a high light emission intensity and an excellent light emission luminance. The method includes preparing a calcined product having a composition of ?-sialon containing an activating element; grinding the calcined product to obtain a ground product; and heat-treating the ground product to obtain a heat-treated product. A specific surface area of the ground product is 0.2 m2/g or more.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: November 29, 2022
    Assignee: NICHIA CORPORATION
    Inventors: Kenichi Aoyagi, Takashi Kaide, Motoharu Morikawa, Shoji Hosokawa
  • Semiconductor nanocrystal particles and devices including the same
    Patent number: 11512252
    Abstract: A semiconductor nanocrystal particle including: a core including a first semiconductor material; and a shell disposed on the core, wherein the shell includes a second semiconductor material, wherein the shell is free of cadmium, wherein the shell has at least two branches and at least one valley portion connecting the at least two branches, and wherein the first semiconductor material is different from the second semiconductor material.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: November 29, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Garam Park, Eun Joo Jang, Yongwook Kim, Jihyun Min, Hyo Sook Jang, Shin Ae Jun, Taekhoon Kim, Yuho Won
  • Method for simultaneously preparing iron oxide red pigment and aromatic amine
    Patent number: 11512006
    Abstract: A method for simultaneously preparing an iron oxide red pigment and an aromatic amine is provided. In the method, an aromatic nitro compound and ferrous iron are first used to prepare an iron oxide red seed crystal under the action of a catalyst, and then iron powder is used to reduce the aromatic nitro compound and generate iron oxide in situ which grows into iron oxide red with pigment performance on the seed crystal. The method provides a clean and economical way for the reduction of an aromatic nitro compound (especially those in which there are other easily-reduced substituents on an aromatic ring) to prepare an aromatic amine.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: November 29, 2022
    Assignee: HEBEI CAIKE CHEMICAL CO., LTD.
    Inventors: Weidong Duan, Guofu Zhang, Yu Wei
  • Sol-gel process for synthesising a luminescent material with general formulation: AxByFz:Mn
    Patent number: 11505741
    Abstract: A sol-gel process for synthesizing a luminescent material has a general formulation: AxByFz:Mn. A is an element of group 1, 2, 4, NR4 or a combination of elements belonging to those groups, with R?H or an alkyl chain or a combination of chains. B is an element of group 5, 6, 13, 14 and 0<x?5, 0<y?2, 5?z?7. The sol-gel process includes a) producing a liquid precursor (2, 3) in an alcohol solution by mixing metal reagents (1) with manganese, the mixture being made at pH<8; b) obtaining a solid precursor (5, 6) from the liquid precursor (2, 3) obtained in step a), by eliminating (4) the solvent; c) crystallizing (7, 70) the solid precursor (5, 6) obtained in step b) by thermal treatment in fluorinated atmosphere; and d) retrieving the fluorescent crystalline powder (8) obtained at an end of step c).
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: November 22, 2022
    Inventors: Anthony Barros, Rodolphe Deloncle, Jérôme Deschamps, Geneviève Chadeyron, Damien Boyer, Philippe Boutinaud
  • Method for producing ceramic composite
    Patent number: 11498883
    Abstract: A method for producing a ceramic composite includes: preparing a sintered body in a plate form containing a fluorescent material having a composition of a rare earth aluminate, and aluminum oxide; and eluting the aluminum oxide from the sintered body by contacting the sintered body with a basic substance, for example, contained in an alkali aqueous solution, and the dissolution amount of the fluorescent material eluted from the sintered body in the step of eluting the aluminum oxide is 0.5% by mass or less based on an amount of the fluorescent material contained in the sintered body as 100% by mass.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: November 15, 2022
    Assignee: NICHIA CORPORATION
    Inventor: Toshiyuki Hirai
  • Ratiometric fluorescent probe, preparation method thereof, and application in detection of hydrogen peroxide
    Patent number: 11499094
    Abstract: The present disclosure provides a ratiometric fluorescent probe, a preparation method thereof, and an application in detection of hydrogen peroxide. In the present disclosure, MoOx QDs (nanoenzymes) and Co/Zn-MOFs both have catalytic activity, and the large specific surface area and porous structure of Co/Zn-MOFs can provide more binding sites for the contact between nanoenzymes and substrates. Moreover, Co/Zn-MOFs have high catalytic activity similar to natural enzymes. When nanoenzymes with fluorescent properties encounter Co/Zn-MOFs with similar catalytic activity, they will collide with a spark of “synergy catalysis”, and the fusion of the two plays a role of synergy catalysis; in addition, the uniform cavity of Co/Zn-MOFs can provide “hosts” for nanoenzymes, and Co/Zn-MOFs provide “anchors” for MoOx QDs, avoiding the aggregation of MoOx QDs and enhancing the stability of the probe.
    Type: Grant
    Filed: January 14, 2022
    Date of Patent: November 15, 2022
    Assignee: Zhejiang University
    Inventors: Yong He, Yongqiang Shi, Xuping Feng, Lei Lin, Fangfang Qu, Mingzhu Tao
  • Method for producing group III-V semiconductor nanoparticle, method for producing group III-V semiconductor quantum dot, and flow reaction system
    Patent number: 11492252
    Abstract: A method for producing a Group III-V semiconductor nanoparticle by flow reaction, including: introducing a solution of compound containing Group III element into a first flow channel, introducing a solution of compound containing Group V element into a second flow channel, and combining the solutions to produce nanoparticles, in which the combining portion is constituted by a multi-layered tubular mixer, one of the solutions is allowed to flow through a flow channel in the smallest tube of the mixer, and the other of the solutions is allowed to flow through a flow channel adjacent to the flow channel in the smallest tube, and a value of a ratio of linear velocity of the solution flowing in the flow channel adjacent to the flow channel in the smallest tube to linear velocity of the solution flowing in the flow channel in the smallest tube is a specific value.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: November 8, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Hideki Matsumoto, Kenji Wada
  • Mechanoluminescent devices, articles, and methods
    Patent number: 11486774
    Abstract: Mechanoluminescent devices and articles, such as wearable articles, that include mechanoluminescent devices. The mechanoluminescent devices may have a lateral type architecture or a vertical type architecture. The mechanoluminescent devices may be sensors, including pressure sensors.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: November 1, 2022
    Assignee: The Florida State University Research Foundation, Inc.
    Inventors: Okenwa I. Okoli, Md Abu S. Shohag, Nirmal Adhikari
  • Phosphor particle, composite, light-emitting device, and method for producing phosphor particle
    Patent number: 11485906
    Abstract: An ?-sialon phosphor particle containing Eu. At least one minute recess is formed on a surface of the ?-sialon phosphor particle. The ?-sialon phosphor particle is preferably produced by undergoing a raw material mixing step, a heating step, a pulverizing step, and an acid treatment step.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: November 1, 2022
    Assignee: DENKA COMPANY LIMITED
    Inventors: Tomohiro Nomiyama, Yusuke Takeda, Marina Takamura, Tatsuya Okuzono, Masaru Miyazaki, Shintaro Watanabe
  • Polar nanoregions engineered relaxor-PbTiOferroelectric crystals
    Patent number: 11486055
    Abstract: A relaxor-PT based piezoelectric crystal is disclosed, comprising the general formula of (Pb1-1.5xMx){[(MI,MII)1-z(MI?,MII?)z]1-yTiy}O3, wherein: M is a rare earth cation; MI is selected from the group consisting of Mg2+, Zn2+, Yb3+, Sc3+, and In3+; MII is Nb5+; MI? is selected from the group consisting of Mg2+, Zn2+, Yb3+, Sc3+, In3+, and Zr4; MII? is Nb5+ or Zr4+; 0<x?0.05; 0.02<y<0.7; and 0?z?1, provided that if either MI? or MII? is Zr4+, both MI? and MII? are Zr4+. A method for forming the relaxor-PT based piezoelectric crystal is disclosed, comprising pre-synthesizing precursor materials by calcining mixed oxides, mixing the precursor materials with single oxides and calcining to form a feeding material, and growing the relaxor-PT based piezoelectric crystal having the general formula of (Pb1-1.5xMx){[(MI,MII)1-z(MI?,MII?)z]1-yTiy}O3 from the feeding material by a Bridgman method.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: November 1, 2022
    Assignees: TRS TECHNOLOGIES, INC., THE PENN STATE RESEARCH FOUNDATION
    Inventors: Jun Luo, Wesley S. Hackenberger, Fei Li, Shujun Zhang, Thomas R. Shrout
  • High luminescence plastic scintillators
    Patent number: 11479717
    Abstract: A plastic scintillator includes a polymeric matrix comprising a primary fluorophore capable of forming an amorphous glass in its pure form. The primary fluorophore is also capable of generating luminescence in the presence of ionizing radiation and includes: a central species including silicon; a luminescent organic group bonded to the central species or to an optional organic linker group, the luminescent organic group including fluorene or an analog thereof; and the optional organic linker group, if present, is bonded to the central species and the luminescent organic group.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: October 25, 2022
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Nicholas Myllenbeck, Patrick L. Feng, Joseph Carlson
  • Hydrophilic and hydrophobic superparamagnetic FeOnanoparticles as T-contrast agents for oil reservoir applications
    Patent number: 11479702
    Abstract: The invention is directed to hydrophilic and hydrophobic superparamagnetic nanoparticles and their use as contrast agents for NMR including agents that distinguish oil and water in NMR logging of geological formations containing oil or water. Methods of making these SPIONs are also described.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: October 25, 2022
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Shahid Ali Muhammad Arshad, Safyan A. Khan, Mohamed A. Morsy
  • Method of increasing a fluorescence signal of a fluorophore
    Patent number: 11466203
    Abstract: A method of increasing a fluorescence signal of a fluorophore is provided. The method includes dissolving the fluorophore in a solvent to form a solution and adding silver nanoparticles to the solution to form a mixture. The silver nanoparticles have a size of 3-10 nm, and the silver nanoparticles have an irregular shape and at least one fractal structure. The method further includes at least partially coating a substrate with the mixture to form a fluorescence sample and recording a fluorescence image of the fluorescence sample. The fluorophore is adsorbed to at least one silver nanoparticle and the fluorescence signal of the fluorescence image is higher than a fluorescence signal of a fluorescence image of the fluorophore without the silver nanoparticles.
    Type: Grant
    Filed: May 19, 2022
    Date of Patent: October 11, 2022
    Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventor: Mohammed Kamal Hossain
  • 3-dimensional printed parts
    Patent number: 11465341
    Abstract: A 3-dimensional printed part can include a part body including a first matrix of fusing agent and thermoplastic polymer powder, a security feature including a second matrix of fusing agent, thermoplastic polymer powder, and photoluminescent agent, and a masking feature including a third matrix of fusing agent and thermoplastic polymer powder. The security feature can be positioned beneath and visible through the masking feature upon photoluminescent emission of the security feature.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: October 11, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Garry Hinch, Kevin P. DeKam, Sterling Chaffins, James William Stasiak