Patents by Inventor Masahiro Ogawa

Masahiro Ogawa 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: 20230407060
    Abstract: The present invention relates to a chloroprene copolymer latex, a chloroprene copolymer latex composition, a chloroprene copolymer rubber molded article, a dip-molded product, and a method for producing a chloroprene copolymer latex. The method for producing a chloroprene copolymer latex has a step of emulsion polymerizing 2-chloro-1,3-butadiene (A-1) and 2-methyl-1,3-butadiene (A-2) in the presence of sulfur (A-3).
    Type: Application
    Filed: November 9, 2021
    Publication date: December 21, 2023
    Applicant: Resonac Corporation
    Inventors: Shu KANEKO, Masahiro OGAWA, Noriko OGAWA, Akira SHIBUYA
  • Patent number: 11789348
    Abstract: A phosphor member has a phosphor body configured to absorb excitation light to thereby emit first fluorescent light including a first wavelength component and a second wavelength component having a wavelength shorter than a wavelength of the first wavelength component, and a filter configured to transmit the first wavelength component as light source light and reflect the second wavelength component towards the phosphor body as second excitation light.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: October 17, 2023
    Assignee: CASIO COMPUTER CO., LTD.
    Inventor: Masahiro Ogawa
  • Patent number: 11785693
    Abstract: A light source unit includes a first light source for first light, a second light source for second light differing from the first light, a display device for performing a gradation control on the first light and the second light which are emitted in a time dividing fashion in corresponding gradation control periods to thereby form image light, and a processor configured to control a first dimming mode for adjusting a quantity of light of the first light source in the gradation control periods of the first light and the second light and a second dimming mode for adjusting the quantity of light of the first light source by performing a turn-off control in at least a partial period of the gradation control period of the first light and adjusting the quantity of light of the first light source in the gradation control period of the second light.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: October 10, 2023
    Assignee: CASIO COMPUTER CO., LTD.
    Inventor: Masahiro Ogawa
  • Publication number: 20230250436
    Abstract: This invention provides a nucleic acid that enables evaluation of various endocrine disrupting actions of a very small amount of endocrine disrupting chemicals with high sensitivity. Such nucleic acid comprises a total of 20 to 60 nucleotides comprising the nucleotide sequence shown in SEQ ID NO: 1 and shows excellent responsiveness to various endocrine disrupting chemicals.
    Type: Application
    Filed: April 20, 2021
    Publication date: August 10, 2023
    Applicants: KUMIAI CHEMICAL INDUSTRY CO., LTD., UNIVERSITY PUBLIC CORPORATION OSAKA
    Inventors: Masahiro OGAWA, Sayoko HARASHIMA, Masanobu KAWANISHI, Takashi YAGI
  • Publication number: 20230207845
    Abstract: According to the present embodiment, the first fuel cell group is formed of a plurality of fuel cell stacks connected in series. The first power converter is capable of controlling a first power to be generated by the first fuel cell group according to a first output current. The second fuel cell group is formed of a plurality of fuel cell stacks connected in series, the fuel cell stacks corresponding respectively to the fuel cell stacks in the first fuel cell group. The second power converter is capable of controlling a second power to be generated by the second fuel cell group according to a second output current. Oxygen-containing gas is supplied through the first pipe to each of the fuel cell stacks in the first fuel cell group and each of the fuel cell stacks in the second fuel cell group.
    Type: Application
    Filed: December 22, 2022
    Publication date: June 29, 2023
    Applicant: Toshiba Energy Systems & Solutions Corporation
    Inventors: Masahiro OGAWA, Shunsuke KIMURA
  • Patent number: 11659767
    Abstract: A thermoelectric element-containing package according to one aspect of the present disclosure includes a thermoelectric conversion module including: a first substrate having first and second main surfaces; a second substrate having third and fourth main surfaces; and a plurality of thermoelectric elements that are sandwiched between the first and second substrates and arranged along the second main surface and the third main surface. The thermoelectric element-containing package further includes: a frame joined to the first and second substrates so as to form a hermetically sealed space surrounding the plurality of thermoelectric elements and disposed between the first substrate and the second substrate; and a placement member that is disposed on the first main surface of the first substrate or the fourth main surface of the second substrate and to which an additional device is to be connected.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: May 23, 2023
    Assignees: NGK SPARK PLUG CO., LTD., FERROTEC MATERIAL TECHNOLOGIES CORPORATION
    Inventors: Masahiro Ogawa, Tetsuya Kato, Takayuki Hachida
  • Patent number: 11635673
    Abstract: A luminescent light emitting device includes a base, a luminescent material layer provided on the base, a heat dissipating rib provided on an outer circumferential side of the luminescent material layer in such a manner as to rise erect from the base, and a collective lens fixed to the heat dissipating rib to seal in the luminescent material layer.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: April 25, 2023
    Assignee: CASIO COMPUTER CO., LTD.
    Inventor: Masahiro Ogawa
  • Publication number: 20230092862
    Abstract: A projecting system includes an image projector that includes an optical source and that projects an image on a projected surface; and a processor. The processor obtains brightness information regarding brightness around the projected surface. The processor selects at least one item among a total luminous flux of the optical source, a color gamut of the image, and a size of the image. The processor adjusts the item that is selected based on the brightness information.
    Type: Application
    Filed: September 14, 2022
    Publication date: March 23, 2023
    Inventor: Masahiro OGAWA
  • Publication number: 20230047842
    Abstract: A nitride semiconductor device includes a substrate, a first electron transport layer above the substrate, a first electron supply layer above the first electron transport layer, a first nitride semiconductor layer above the first electron supply layer, a first opening passing through the first nitride semiconductor layer and the first electron supply layer and reaching the first electron transport layer, a second electron transport layer disposed above the first nitride semiconductor layer and along the inner surface of the first opening, a second electron supply layer disposed above the second electron transport layer and covering the first opening, a gate electrode disposed above the second electron supply layer and covering the first opening, a source electrode connected to the first nitride semiconductor layer and the second electron transport layer, and a drain electrode.
    Type: Application
    Filed: December 21, 2020
    Publication date: February 16, 2023
    Inventors: Masahiro OGAWA, Daisuke SHIBATA, Satoshi TAMURA
  • Publication number: 20220242987
    Abstract: The present invention relates to a chloroprene copolymer latex composition, a molded article of chloroprene copolymer rubber, or a dip-molded product, and the chloroprene copolymer latex composition includes a chloroprene copolymer (A) and a vulcanization accelerator (B). The chloroprene copolymer (A) includes monomer units derived from chloroprene and from 2-methyl-1,3-butadiene. The chloroprene copolymer latex composition includes a carbamate-based vulcanization accelerator and a thiazole-based vulcanization accelerator as the vulcanization accelerator (B). The chloroprene copolymer latex composition enables production of a molded article having high flexibility and high tensile strength without use of a vulcanization accelerator that is feared to have skin sensitization.
    Type: Application
    Filed: December 24, 2020
    Publication date: August 4, 2022
    Applicant: SHOWA DENKO K.K.
    Inventors: Shu KANEKO, Masahiro OGAWA, Akira SHIBUYA
  • Publication number: 20220227976
    Abstract: One embodiment of the present invention relates to a chloroprene copolymer latex, a method for producing a chloroprene copolymer latex, a chloroprene copolymer latex composition, and a molded article or dipped product of a chloroprene copolymer rubber. The chloroprene copolymer latex is a latex of a chloroprene copolymer including monomer units derived from 2-chloro-1,3-butadiene (chloroprene) and monomer units derived from 2-methyl-1,3-butadiene, wherein the tetrahydrofuran insoluble content in the chloroprene copolymer is 20% by mass or less, and the proportion of the monomer units derived from 2-methyl-1,3-butadiene is 10 to 27 mol % in the chloroprene copolymer.
    Type: Application
    Filed: October 23, 2020
    Publication date: July 21, 2022
    Applicant: SHOWA DENKO K.K.
    Inventors: Shu KANEKO, Masahiro OGAWA, Akira SHIBUYA
  • Patent number: 11362206
    Abstract: A nitride semiconductor device includes: a substrate having a first main surface and a second main surface; a first nitride semiconductor layer of a first conductivity type provided above the first main surface; a second nitride semiconductor layer of a second conductivity type provided above the first nitride semiconductor layer; a first opening which penetrates through the second nitride semiconductor layer to the first nitride semiconductor layer; an electron transport layer provided above the second nitride semiconductor layer and on an inner surface of the first opening; a gate electrode provided above the electron transport layer and covering the first opening; a source electrode connected to the second nitride semiconductor layer; a drain electrode provided on a second main surface-side of the substrate; and a high-resistance layer provided between the second nitride semiconductor layer and the electron transport layer in the first opening, the high-resistance layer including a nitride semiconductor.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: June 14, 2022
    Assignee: PANASONIC CORPORATION
    Inventors: Masahiro Ogawa, Daisuke Shibata, Satoshi Tamura
  • Publication number: 20220162427
    Abstract: A sulfur-modified chloroprene polymer latex includes an emulsifier and a sulfur-modified chloroprene polymer obtained by modifying a chloroprene polymer (A) with sulfur (B), wherein the sulfur amount Y in the sulfur-modified chloroprene polymer and the z-average particle size X of the sulfur-modified chloroprene polymer satisfy formulae (1) to (3) (formula (1): 0.10<Y<0.60; formula (2): 120<X<320; and formula (3): Y<0.0025X?0.20), the total amount of a chloroprene monomer (A-1) and a monomer (A-2) copolymerizable with the chloroprene monomer which constitute the chloroprene polymer is 100 parts by mass, the amount of sulfur (B) contained in the sulfur-modified chloroprene polymer is Y parts by mass, and the z-average particle size of the sulfur-modified chloroprene polymer is X nm. The sulfur-modified chloroprene polymer latex composition can also include a metal oxide (C), a cross-linking accelerator (D), and an antioxidant (E).
    Type: Application
    Filed: November 25, 2019
    Publication date: May 26, 2022
    Applicant: SHOWA DENKO K.K.
    Inventors: Tomoaki MURATA, Masahiro OGAWA, Noriko OGAWA, Masanao KAMIJO
  • Publication number: 20220157980
    Abstract: A field-effect transistor includes a substrate having conductivity and made of gallium nitride, a buffer layer provided on the substrate and made of C-doped GaN, a drift layer provided on the buffer layer and made of undoped GaN, and a channel layer provided on the drift layer, made of undoped AlGaN, and joined to the drift layer by heterojunction. A gate electrode is provided on the channel layer. A source electrode and a drain electrode are each provided in regions on both sides of the gate electrode on the channel layer.
    Type: Application
    Filed: August 5, 2019
    Publication date: May 19, 2022
    Inventors: Shinji UJITA, Satoshi TAMURA, Masahiro OGAWA, Daisuke SHIBATA, Hiroyuki HANDA
  • Publication number: 20220073657
    Abstract: An isoprene-based polymer latex composition includes a chloroprene polymer latex (A) and an isoprene polymer latex (B), in which the chloroprene polymer has a z-average particle size of 180 nm or greater and smaller than 300 nm, and a tetrahydrofuran-insoluble fraction of 80 to 99% by mass; the chloroprene polymer latex (A) is (1) a copolymer latex of chloroprene (A-1) and 2,3-dichloro-1,3-butadiene (A-2-1), or (2) a copolymer latex of the above (A-1) and (A-2-1), and another monomer (A-2-2); and the copolymer is obtained by copolymerization in which the ratio of 2,3-dichloro-1,3-butadiene (A-2-1) is 5.0 to 30.0% by mass relative to the total amount of the monomer components chloroprene (A-1) and 2,3-dichloro-1,3-butadiene (A-2-1) of 100% by mass. The isoprene-based polymer latex composition's quality is maintained, and the properties after cross-linking of a molded product obtained by dipping a dipping former into the composition multiple times do not deteriorate.
    Type: Application
    Filed: November 26, 2019
    Publication date: March 10, 2022
    Applicant: SHOWA DENKO K.K.
    Inventors: Masahiro OGAWA, Tomoaki MURATA, Noriko OGAWA, Masanao KAMIJO
  • Publication number: 20220075246
    Abstract: A phosphor member has a phosphor body configured to absorb excitation light to thereby emit first fluorescent light including a first wavelength component and a second wavelength component having a wavelength shorter than a wavelength of the first wavelength component, and a filter configured to transmit the first wavelength component as light source light and reflect the second wavelength component towards the phosphor body as second excitation light.
    Type: Application
    Filed: August 31, 2021
    Publication date: March 10, 2022
    Inventor: Masahiro OGAWA
  • Publication number: 20220059660
    Abstract: A nitride semiconductor device includes: a substrate; an n-type drift layer; a p-type blocking layer; a gate opening which penetrates through the blocking layer to the drift layer; an electron transport layer and an electron supply layer provided on an inner face of the gate opening; a gate electrode above the electron supply layer and covering the gate opening; a source opening penetrating through the electron supply layer and the electron transport layer to the blocking layer; a source electrode covering the source opening, the source electrode being connected to the electron supply layer, the electron transport layer, and the blocking layer; and a drain electrode on a side of the substrate opposite from a side on which the blocking layer is located. A bottom face of the gate electrode is closer to the drain electrode than a bottom face of the blocking layer is.
    Type: Application
    Filed: November 25, 2019
    Publication date: February 24, 2022
    Inventors: Daisuke SHIBATA, Satoshi TAMURA, Masahiro OGAWA
  • Publication number: 20210282247
    Abstract: A light source unit includes a first light source for first light, a second light source for second light differing from the first light, a display device for performing a gradation control on the first light and the second light which are emitted in a time dividing fashion in corresponding gradation control periods to thereby form image light, and a processor configured to control a first dimming mode for adjusting a quantity of light of the first light source in the gradation control periods of the first light and the second light and a second dimming mode for adjusting the quantity of light of the first light source by performing a turn-off control in at least a partial period of the gradation control period of the first light and adjusting the quantity of light of the first light source in the gradation control period of the second light.
    Type: Application
    Filed: March 3, 2021
    Publication date: September 9, 2021
    Inventor: Masahiro OGAWA
  • Publication number: 20210240063
    Abstract: A luminescent light emitting device includes a base, a luminescent material layer provided on the base, a heat dissipating rib provided on an outer circumferential side of the luminescent material layer in such a manner as to rise erect from the base, and a collective lens fixed to the heat dissipating rib to seal in the luminescent material layer.
    Type: Application
    Filed: January 28, 2021
    Publication date: August 5, 2021
    Inventor: Masahiro OGAWA
  • Patent number: 11081183
    Abstract: According to one embodiment, a memory system includes a semiconductor memory device including a first and second string each including cells coupled in series, and a memory controller configured to instruct the device to execute a write operation for writing data on any one of the cells in the first or second string. The first and second string are coupled in parallel between a bit line and a source line, and coupled to different word lines. The write operation includes a first write operation and a second write operation executed after the first write operation. The controller is configured to instruct the device to execute a first write operation on a second cell in the second string between a first write operation on a first cell in the first string and a second write operation on the first cell.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: August 3, 2021
    Assignee: Kioxia Corporation
    Inventors: Masahiro Ogawa, Norio Aoyama