Patents by Inventor Masataka Yamashita

Masataka Yamashita 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: 20250034172
    Abstract: An organic light emitting device using a compound of the following general formula has excellent characteristics. R1 to R4 each are a hydrogen atom, a deuterium atom, an alkyl group, an aryl group, or a donor group; two or more of R1 to R4 are donor groups, and at least one thereof is a substituted ring-fused carbazol-9-yl group; X1 to X3 each are N or C(R), R is a hydrogen atom, a deuterium atom or a substituent; Ar1 and Ar2 each are an aryl group; L1 is a single bond or a linking group.
    Type: Application
    Filed: November 2, 2022
    Publication date: January 30, 2025
    Inventors: Yoshitake SUZUKI, Masataka YAMASHITA, Takuya HIGA, Naomi SHIMAMURA, Satoshi OHNO, Songhye HWANG, Kousei KANAHARA, Kei MORIMOTO
  • Publication number: 20250031514
    Abstract: An organic light emitting device using a compound of the following general formula has excellent light emission characteristics. R1 is a hydrogen atom, a deuterium atom or an alkyl group; R2 to R4 are donor groups, but not all are the same; X1 to X3 each are N or C(R); R is a hydrogen atom, a deuterium atom or a substituent; Ar1 and Ar2 each are an aryl group; L1 is a single bond or a linking group.
    Type: Application
    Filed: November 14, 2022
    Publication date: January 23, 2025
    Inventors: Masataka YAMASHITA, Yoshitake SUZUKI, Naomi SHIMAMURA, Hiroaki OZAWA, Songhye HWANG, Kousei KANAHARA
  • Publication number: 20240306497
    Abstract: A compound represented by the following general formula has excellent light emission characteristics. Ar1 represents a benzene ring, a naphthalene ring, a phenanthrene ring, etc.; D represents 5H-indolo[3,2,1-de]phenazin-5-yl group, etc.; A represents a cyano group, a phenyl group, a pyrimidyl group, a triazyl group, etc.; m is 1 or 2; n is 0 to 2; R1 to R4 each represent H, an aryl group, a cyano group, etc.
    Type: Application
    Filed: February 4, 2022
    Publication date: September 12, 2024
    Inventors: Umamahesh BALIJAPALLI, Yoshitake SUZUKI, Yu YAMANE, Saidalimu IBRAYIM, Masataka YAMASHITA, Shinhyung CHOI, Takuya HIGA
  • Publication number: 20240298538
    Abstract: A compound represented by the following general formula is an excellent light emitting material. R1 to R5 each represent a hydrogen atom, a deuterium atom, or a substituent other than a cyano group, but one or more of R1 to R5 is an aryl group or a pyridyl group, two or more of R1 to R5 are donor groups, and one or more of them are a substituted ring-fused indol-1-yl group (the number of rings constituting the fused ring is 4 or more).
    Type: Application
    Filed: September 24, 2021
    Publication date: September 5, 2024
    Inventors: Yong Joo CHO, Yoshitake SUZUKI, Masataka YAMASHITA, Naomi SHIMAMURA, Yu YAMANE, Satoshi OHNO, Shinhyung CHOI, Noboru SANADA
  • Publication number: 20240243381
    Abstract: A method of separating valuable materials. The method includes a heat treatment step of performing a heat treatment on a lithium-ion secondary battery including valuable materials, a crushing step of crushing a heat-treated product obtained in the heat treatment step, and a classification step including a first classification step of classifying a crushed product obtained in the crushing step into a coarse-particle product and an intermediate product at a classification cut-point of 0.6 mm or greater and 2.4 mm or less, and a second classification step of classifying the intermediate product into a medium-particle product and a fine-particle product at a classification cut-point of 40 ?m or greater and 300 ?m or less.
    Type: Application
    Filed: March 1, 2022
    Publication date: July 18, 2024
    Applicant: DOWA ECO-SYSTEM CO., LTD.
    Inventors: Masataka YAMASHITA, Yoshihiro HONMA, Chihiro NISHIKAWA, Jiahao LIU, Shota TAHATA, Changzhi LIU
  • Publication number: 20230411719
    Abstract: A method for recovering a valuable substance from a lithium ion secondary battery is provided. The method includes a thermal treatment step of thermally treating a lithium ion secondary battery containing aluminum, carbon, and a copper foil as constituting materials, and a wet sorting step of applying an external force to a thermally treated product obtained in the thermal treatment step in the presence of a liquid, to sort the thermally treated product into a heavy product and a light product containing copper.
    Type: Application
    Filed: September 7, 2021
    Publication date: December 21, 2023
    Applicant: DOWA ECO-SYSTEM CO., LTD.
    Inventors: Chihiro NISHIKAWA, Yoshihiro HONMA, Ryoei WATANABE, Masataka YAMASHITA
  • Publication number: 20230366061
    Abstract: A method for recovering a valuable substance is provided. The method includes a thermal treatment step of thermally treating a target containing a valuable substance using a continuous furnace configured to thermally treat the target while moving a target storing unit, in which the target is stored, such that the target storing unit is not contacted by a flame that is for thermal treatment, and a valuable substance recovering step of recovering the valuable substance from a thermally treated product of the target obtained in the thermal treatment step.
    Type: Application
    Filed: September 7, 2021
    Publication date: November 16, 2023
    Applicant: DOWA ECO-SYSTEM CO., LTD.
    Inventors: Chihiro NISHIKAWA, Yoshihiro HONMA, Ryoei WATANABE, Masataka YAMASHITA
  • Publication number: 20230323506
    Abstract: A method for recovering a valuable substance is provided. The method includes a thermal treatment step of thermally treating a target, which contains a valuable substance and is stored in a target storing unit, via a flame blocking unit configured to block a flame for thermally treating the target such that the target storing unit is not contacted by the flame, and a valuable substance recovering step of recovering the valuable substance from a thermally treated product of the target obtained in the thermal treatment step.
    Type: Application
    Filed: September 7, 2021
    Publication date: October 12, 2023
    Applicant: DOWA ECO-SYSTEM CO., LTD.
    Inventors: Chihiro NISHIKAWA, Yoshihiro HONMA, Ryoei WATANABE, Masataka YAMASHITA, Youichi FUKUCHI, Tomotaka IZUMI, Yoshiki ITO
  • Publication number: 20230318063
    Abstract: A method for recovering a valuable substance is provided. The method includes: a thermal treatment step of thermally treating a target containing a valuable substance while supporting a target storing unit, in which the target is stored, by a supporting unit that can support the target storing unit, wherein the thermally treating includes heating a gas present in a region, in which the supporting unit is positioned, by a flame for thermally treating the target such that the target storing unit is not contacted by the flame; and a valuable substance recovering step of recovering the valuable substance from a thermally treated product of the target obtained in the thermal treatment step.
    Type: Application
    Filed: September 3, 2021
    Publication date: October 5, 2023
    Applicant: DOWA ECO-SYSTEM CO., LTD.
    Inventors: Yoji SUGANUMA, Hiroki NAGAHARA, Minoru YOSHIHARA, Chihiro NISHIKAWA, Ryoei WATANABE, Yoshihiro HONMA, Masataka YAMASHITA
  • Publication number: 20230265106
    Abstract: A compound represented by the following general formula is used as a light emitting material. Any one of R1, R2 and R4 is a hydrogen atom or a deuterium atom, the remaining ones are donor groups but at least one is a carbazol-9-yl group condensed with a benzofuran ring, a benzothiophene ring, an indole ring, an indene ring or a silaindene ring.
    Type: Application
    Filed: July 30, 2021
    Publication date: August 24, 2023
    Inventors: Masataka YAMASHITA, Shuo-Hsien CHENG, YuSeok YANG
  • Publication number: 20230210000
    Abstract: To provide an excellent light emitting material. A compound represented by the following general formula is used as the light emitting material. R is a hydrogen atom, a deuterium atom, an aryl group, or a heteroaryl group bonding via a carbon atom, Ar is an aryl group, or a heteroaryl group bonding via a carbon atom, D1 and D2 each are a donor group, and at least one is a hetero ring-condensed carbazol-9-yl group.
    Type: Application
    Filed: May 21, 2021
    Publication date: June 29, 2023
    Inventors: Masataka YAMASHITA, Shuo-Hsien CHENG, Umamahesh BALIJAPALLI, YuSeok YANG
  • Publication number: 20230119544
    Abstract: Provided is a method for concentrating a valuable metal contained in a lithium ion secondary battery, for processing a lithium ion secondary battery containing at least one element selected from the group consisting of cobalt and nickel, or a positive electrode material of the lithium ion secondary battery, to concentrate a valuable metal containing either or both of cobalt and nickel. The method includes a thermal treatment step of thermally treating the lithium ion secondary battery or the positive electrode material thereof, to form a granular aggregate containing at least one valuable metal selected from the group consisting of cobalt and nickel.
    Type: Application
    Filed: March 1, 2021
    Publication date: April 20, 2023
    Applicant: DOWA ECO-SYSTEM CO., LTD.
    Inventors: Ryoei WATANABE, Yoshihiro HONMA, Chihiro NISHIKAWA, Masataka YAMASHITA, Jiahao LIU
  • Publication number: 20230114170
    Abstract: The compound represented by the following formula is useful as a light-emitting material. R1 or R2 is Het-LA-* or CN-LA-*; one to three of R1 to R5 are diarylamino groups; the rest are a hydrogen atom or an aryl group; Het is a heteroaryl group; and LA is a single bond or an arylene group.
    Type: Application
    Filed: February 3, 2021
    Publication date: April 13, 2023
    Inventors: Yong Joo CHO, YuSeok YANG, Masataka YAMASHITA, Yoshitake SUZUKI, Kaori FUJISAWA
  • Publication number: 20230107938
    Abstract: A method for recovering valuable substance, for recovering it from lithium ion secondary battery includes: thermal treatment step of thermally treating lithium ion secondary battery to obtain thermally treated product; pulverizing/classifying step of classifying pulverized product obtained by pulverizing thermally treated product, to obtain coarse and fine-grained products both containing valuable substance; water leaching step of immersing fine-grained product in water, to obtain water-leached slurry; wet magnetic sorting step of subjecting water-leached slurry to wet magnetic sorting, to sort water-leached slurry into magnetically attractable materials and non-magnetically attractable material slurry; and acid leaching step of adding acidic solution to either or both of non-magnetically attractable material slurry recovered by wet magnetic sorting and non-magnetically attractable materials obtained by solid-liquid separation of non-magnetically attractable material slurry to leach non-magnetically attractab
    Type: Application
    Filed: March 9, 2021
    Publication date: April 6, 2023
    Applicant: DOWA ECO-SYSTEM CO., LTD.
    Inventors: Chihiro NISHIKAWA, Yoshihiro HONMA, Ryoei WATANABE, Masataka YAMASHITA
  • Publication number: 20230106096
    Abstract: The compound represented by the following formula is useful as a light-emitting material. One of R1 to R5 is CN; another is Het-LA-*; other two or three are each a carbazolyl group, etc.; and the rest are others. Het is a heteroaryl group; and LA is a single bond or an arylene group.
    Type: Application
    Filed: February 3, 2021
    Publication date: April 6, 2023
    Inventors: Hiroaki OZAWA, Masataka YAMASHITA, Shuo-Hsien CHENG, YuSeok YANG
  • Publication number: 20230104457
    Abstract: Provided is a method for recovering lithium, for recovering lithium from a lithium ion secondary battery, the method including: a thermal treatment step of thermally treating a lithium ion secondary battery having a residual voltage higher than or equal to 80% of a rated voltage, to obtain a thermally treated product; a pulverizing step of pulverizing the thermally treated product, to obtain a pulverized product; and a lithium recovering step of recovering lithium from the pulverized product.
    Type: Application
    Filed: March 9, 2021
    Publication date: April 6, 2023
    Applicant: DOWA ECO-SYSTEM CO., LTD.
    Inventors: Chihiro NISHIKAWA, Yoshihiro HONMA, Ryoei WATANABE, Masataka YAMASHITA, Yoshiki ITO, Yoshitaka YOSHIWARA
  • Publication number: 20220340545
    Abstract: The present disclosure relates to compounds of Formula I) as useful materials for OLED's. X1, X2 and X3 are N or C(R5); Ar1 and Ar2 are aryl, heteroaryl or cyano; L1 is single bond, arylene or heteroarylene; and R1, R2, R3 and R4 are diarylamino, carbazolyl, heteroaryl, H or alkyl.
    Type: Application
    Filed: September 8, 2020
    Publication date: October 27, 2022
    Inventors: Yong Joo CHO, Kaori FUJISAWA, Yoshitake SUZUKI, Masataka YAMASHITA, Shuo-Hsien CHENG, YuSeok YANG, Hiroaki OZAWA, Hayato KAKIZOE, Yu INADA, Ayataka ENDO
  • Patent number: 11467185
    Abstract: A first base plate includes a plurality of first positioning hole portions, an accommodation portion that accommodates an optical module, a first opening portion, a first pressing portion, and a first engagement portion. A second base plate has a second positioning hole portion that is disposed at a position corresponding to the first positioning hole portion, a second opening portion that is disposed at a predetermined positional relationship with respect to the second positioning hole portion, a second holding portion, a conduction portion, a second pressing portion, a substrate portion, a cover portion, a second hinge portion, and a second engagement portion.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: October 11, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kazuo Tamaki, Yasuki Fukui, Naruki Hara, Masataka Yamashita
  • Publication number: 20210063442
    Abstract: A first base plate includes a plurality of first positioning hole portions, an accommodation portion that accommodates an optical module, a first opening portion, a first pressing portion, and a first engagement portion. A second base plate has a second positioning hole portion that is disposed at a position corresponding to the first positioning hole portion, a second opening portion that is disposed at a predetermined positional relationship with respect to the second positioning hole portion, a second holding portion, a conduction portion, a second pressing portion, a substrate portion, a cover portion, a second hinge portion, and a second engagement portion.
    Type: Application
    Filed: August 20, 2020
    Publication date: March 4, 2021
    Inventors: KAZUO TAMAKI, YASUKI FUKUI, NARUKI HARA, MASATAKA YAMASHITA
  • Patent number: 9752477
    Abstract: A honeycomb structure including a honeycomb structure body, first plugging portions, and second plugging portions. The honeycomb structure body has a porous partition wall. The first plugging portions are disposed at an outflow side end face of inlet cells and an inflow side end face of outlet cells. The inlet cells are the predetermined cells of the honeycomb structure body. The outlet cells are the residual cells of the honeycomb structure body. The second plugging portions are not fired. The first plugging portions form a checkered pattern at the inflow side end face and the outflow side end face. The number of the second plugging portions is within 3% of the number of cell open ends where the first plugging portions are not formed, on both end faces of the honeycomb structure body.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: September 5, 2017
    Assignee: NGK Insulators, Ltd.
    Inventors: Tomokatsu Aoyama, Masataka Yamashita, Michio Suzuki