Patents Examined by Matthew E Hoban
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • Patent number: 11453821
    Abstract: This specification discloses a method of enhancing the stability and performance of Eu2+ doped narrow band red emitting phosphors. The resulting phosphor compositions are characterized by crystallizing in ordered structure variants of the UCr4C4 crystal structure type and having a composition of AE1?xLi3?2yAl1+2y?zSizO4?4y?zN4y+z:EUx(AE=Ca, Sr, Ba; 0<x<0.04, 0?y<1, 0<z<0.05, y+z?1). It is believed that the formal substitution (Al,O)+ by (Si,N)+ reduces the concentration of unwanted Eu3+ and thus enhances properties of the phosphor such as stability and conversion efficiency.
    Type: Grant
    Filed: December 2, 2020
    Date of Patent: September 27, 2022
    Assignee: Lumileds LLC
    Inventors: Peter Josef Schmidt, Philipp-Jean Strobel, Volker Weiler, Andreas Tücks
  • Patent number: 11456096
    Abstract: There is provided a ferrite sintered magnet having a high residual magnetic flux density. A ferrite sintered magnet 2 includes a plurality of main phase particles 5 including ferrite having a hexagonal structure, the number of core-shell structured particles 5A having a core 7 and a shell 9 covering the core 7, among the main phase particles 5, is smaller than the number of the main phase particles 5 other than the core-shell structured particles 5A.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: September 27, 2022
    Assignee: TDK Corporation
    Inventors: Hiroyuki Morita, Masanori Ikeda, Yoshitaka Murakawa, Taku Murase
  • Patent number: 11440810
    Abstract: Provided is a powder of a ?-iron oxyhydroxide-based compound that is a group of particles of a ?-iron oxyhydroxide-based compound represented by Formula (1) below; in which a surface of the particles of the ?-iron oxyhydroxide-based compound is modified with a surface modifier; in which, in a case where the powder is dispersed in water to be made into a sol, a zeta potential of the powder is equal to or higher than +5 mV at pH 10; and ?-AaFe1-aOOH??(1) in which, in Formula (1), A represents at least one metallic element other than Fe, and a represents a number that satisfies a relationship of 0?a<1.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: September 13, 2022
    Assignee: FUJIFILM Corporation
    Inventor: Takashi Fujimoto
  • Patent number: 11434143
    Abstract: A polycrystalline YAG sintered body, wherein, when dimensions of a smallest rectangular solid surrounding a YAG sintered body are A mm×B mm×C mm, a maximum value (A, B, C) is 150 mm or less, a minimum value (A, B, C) is more than 20 mm and 40 mm or less, and an optical loss coefficient when light of a wavelength of 300 to 1500 nm (excluding wavelengths which result in absorption of light by an additive element) is transmitted therethrough is 0.002 cm?1 or less. Moreover, a polycrystalline YAG sintered body, wherein, when dimensions of a smallest rectangular solid surrounding a YAG sintered body are A mm×B mm×C mm, a maximum value (A, B, C) is more than 150 mm and 300 mm or less, a minimum value (A, B, C) is more than 5 mm and 40 mm or less, and an optical loss coefficient when light of a wavelength of 300 to 1500 nm (excluding wavelengths which result in absorption of light by an additive element) is transmitted therethrough is 0.002 cm?1 or less.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: September 6, 2022
    Assignee: JX Nippon Mining & Metals Corporation
    Inventors: Mikami Makoto, Yoshiki Yamazaki
  • Patent number: 11427758
    Abstract: A method for producing ?-sialon fluorescent material having excellent emission intensity is provided. The method for producing ?-sialon fluorescent material includes providing a composition comprising silicon nitride that contains aluminium, an oxygen atom, and europium, heat treating the composition, contacting the heat-treated composition with a basic substance, and washing the composition, which has been contacted with the basic substance, with an acidic liquid medium.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: August 30, 2022
    Assignee: NICHIA CORPORATION
    Inventors: Motoharu Morikawa, Shoji Hosokawa, Takashi Kaide, Kenichi Aoyagi