Patents by Inventor Junichi Sugawara

Junichi Sugawara 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: 20230283149
    Abstract: A stator for a rotating electrical machine includes a stator core, a stator winding disposed on or in the stator core, and an annular resinous seal which covers an axial end portion of a coil end of the stator winding. The resinous seal has an inner circumferential surface which is shaped to have a first inner diameter close to the stator core and a second inner diameter farther away from the stator core. The first inner diameter is selected to be smaller than the second inner diameter. This ensures the stability of electrical insulation of the stator winding.
    Type: Application
    Filed: February 23, 2023
    Publication date: September 7, 2023
    Applicants: DENSO CORPORATION, AISIN CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keiji KONDO, Tatsuya FUJITA, Junichi SUGAWARA, Yoshihiro TAKAHARA
  • Publication number: 20230283138
    Abstract: In a stator for a rotating electrical machine, a stator core, and a stator winding are provided. The stator winding is located in or around the stator core and has a coil end exposed outside a corresponding end of the stator core. A neutral busbar is connected to the coil end of the stator winding, and a temperature sensor is mounted to the neutral busbar. A resinous seal includes an insulating resin, and the insulating resin of the resinous seal is arranged to cover an axial end portion of the coil end and the neutral busbar. The resinous seal is configured to have bubbles formed in the insulating resin. The bubbles are located around the neutral busbar.
    Type: Application
    Filed: February 23, 2023
    Publication date: September 7, 2023
    Applicants: DENSO CORPORATION, AISIN CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takuro TSUJI, Junichi Sugawara, Yoshihiro Takahara
  • Patent number: 11573362
    Abstract: An optical element and a projection image display apparatus capable of obtaining excellent tolerance to light of high luminance and high output. The optical element includes a substrate transparent to light in a used wavelength band, and a birefringent layer including an obliquely deposited film containing hafnium oxide as a main component. The projection image display apparatus includes a liquid crystal display device having the optical element, a light source for emitting light, and a projection optical system for projecting modulated light, and the liquid crystal display device is disposed in an optical path between the light source and the projection optical system.
    Type: Grant
    Filed: January 27, 2022
    Date of Patent: February 7, 2023
    Assignee: DEXERIALS CORPORATION
    Inventors: Junichi Sugawara, Yoshi Kanega, Toshiaki Sugawara
  • Patent number: 11550091
    Abstract: A phase difference compensation element, including: a transparent substrate; a first optical anisotropic layer that includes an inorganic material, and has a C-plate retardance; and a second optical anisotropic layer that includes an inorganic material, and includes an oblique angle vapor deposition film that does not have an O-plate retardance, wherein the phase difference compensation element including the first optical anisotropic layer and the second optical anisotropic layer in combination has a quasi-O-plate retardance.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: January 10, 2023
    Assignee: DEXERIALS CORPORATION
    Inventor: Junichi Sugawara
  • Patent number: 11537008
    Abstract: Provided is an optical element which significantly reduces arrangement space, has superior durability, and also enables increased costs to be curbed. Functions of a polarizer and a phase difference compensation element are integrated. Specifically, the optical element has a transparent substrate, and a polarizer on one side of the transparent substrate, and has a phase difference compensation element on a side of the transparent substrate opposite from the polarizer.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: December 27, 2022
    Assignee: Dexerials Corporation
    Inventor: Junichi Sugawara
  • Publication number: 20220385131
    Abstract: In a stator, a stator winding is provided in a stator core and includes phase windings. A neutral-point bus bar is connected to a coil end portion of the stator winding in a radial direction thereof. The coil end portion includes first and second end portions that are joined together. The first tip end portion extends in a fixed direction in the circumferential direction. The second tip end portion extends in a direction opposite the fixed direction in the circumferential direction. The neutral-point bus bar includes a main body portion extending in the circumferential direction and connection portions extending in the radial direction from the main body portion. The connection portions are respectively connected to the phase windings in a state in which the connection portions do not protrude further towards a side opposite the stator core than the main body portion in the axial direction is.
    Type: Application
    Filed: May 31, 2022
    Publication date: December 1, 2022
    Applicants: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN CORPORATION
    Inventors: Ken TAKEDA, Takashi MATSUMOTO, Takahito NOZAWA, Junichi SUGAWARA, Naoki TAKAHASHI
  • Publication number: 20220155510
    Abstract: An optical element and a projection image display apparatus capable of obtaining excellent tolerance to light of high luminance and high output. The optical element includes a substrate transparent to light in a used wavelength band, and a birefringent layer including an obliquely deposited film containing hafnium oxide as a main component. The projection image display apparatus includes a liquid crystal display device having the optical element, a light source for emitting light, and a projection optical system for projecting modulated light, and the liquid crystal display device is disposed in an optical path between the light source and the projection optical system.
    Type: Application
    Filed: January 27, 2022
    Publication date: May 19, 2022
    Applicant: DEXERIALS CORPORATION
    Inventors: Junichi SUGAWARA, Yoshi KANEGA, Toshiaki SUGAWARA
  • Patent number: 11294114
    Abstract: An optical element and a projection image display apparatus capable of obtaining excellent tolerance to light of high luminance and high output. The optical element includes a substrate transparent to light in a used wavelength band, and a birefringent layer including an obliquely deposited film containing hafnium oxide as a main component. The projection image display apparatus includes a liquid crystal display device having the optical element, a light source for emitting light, and a projection optical system for projecting modulated light, and the liquid crystal display device is disposed in an optical path between the light source and the projection optical system.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: April 5, 2022
    Assignee: DEXERIALS CORPORATION
    Inventors: Junichi Sugawara, Yoshi Kanega, Toshiaki Sugawara
  • Patent number: 11281049
    Abstract: In order to provide a phase difference compensating element that has durability and that can improve contrast in a liquid crystal display with high precision while suppressing high costs and long lead times, the present invention is provided with, on a substrate, a first optical anisotropic layer that acts as a C-plate and a second optical anisotropic layer that includes a birefringent film formed by depositing an inorganic material, wherein the birefringent film included in the second optical anisotropic layer is fabricated using specific processes.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: March 22, 2022
    Assignee: Dexerials Corporation
    Inventor: Junichi Sugawara
  • Patent number: 11269218
    Abstract: Provided is a phase difference compensation element that can improve a contrast of a liquid crystal display device and has durability while suppressing an increase in cost and prolongation of lead time. The phase difference compensation element is formed so that, when an optical anisotropic layer is formed on a substrate, the optical anisotropic layer includes a plurality of birefringent films, and a direction of a combined vector obtained by combining respective vectors of the birefringent films when determining a vector with a direction of a line segment obtained by projecting a film formation direction of each birefringent film on a surface of a transparent substrate and a thickness, is substantially the same as a direction of a line segment obtained by projecting a liquid crystal molecule constituting a liquid crystal cell on the surface of the transparent substrate.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: March 8, 2022
    Assignee: Dexerials Corporation
    Inventor: Junichi Sugawara
  • Patent number: 11225709
    Abstract: Provided are a Mn—Zn—O sputtering target that can be used for DC sputtering and a production method therefor. The Mn—Zn—O sputtering target has a chemical composition containing Mn, Zn, O, and an element X (X is one or two elements selected from the group consisting of W and Mo). A surface to be sputtered of the target has an arithmetic mean roughness Ra of 1.5 ?m or less or a maximum height Ry of 10 ?m or less.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: January 18, 2022
    Assignee: Dexerials Corporation
    Inventors: Junichi Sugawara, Yuichi Kamori
  • Publication number: 20210208440
    Abstract: In order to provide a phase difference compensating element that has durability and that can improve contrast in a liquid crystal display with high precision while suppressing high costs and long lead times, the present invention is provided with, on a substrate, a first optical anisotropic layer that acts as a C-plate and a second optical anisotropic layer that includes a birefringent film formed by depositing an inorganic material, wherein the birefringent film included in the second optical anisotropic layer is fabricated using specific processes.
    Type: Application
    Filed: May 23, 2019
    Publication date: July 8, 2021
    Applicant: Dexerials Corporation
    Inventor: Junichi Sugawara
  • Publication number: 20210165150
    Abstract: A phase difference compensation element, including: a transparent substrate; a first optical anisotropic layer that includes an inorganic material, and has a C-plate retardance; and a second optical anisotropic layer that includes an inorganic material, and includes an oblique angle vapor deposition film that does not have an O-plate retardance, wherein the phase difference compensation element including the first optical anisotropic layer and the second optical anisotropic layer in combination has a quasi-O-plate retardance.
    Type: Application
    Filed: October 27, 2020
    Publication date: June 3, 2021
    Applicant: DEXERIALS CORPORATION
    Inventor: Junichi SUGAWARA
  • Publication number: 20210165262
    Abstract: A phase difference compensation element, including: a transparent substrate; a first optical anisotropic layer that is a birefringent body including an inorganic material, where an optic axis of the birefringent body is orthogonal to the transparent substrate; and a second optical anisotropic layer that is a birefringent layer obtained by depositing an inorganic material, where an angle formed between a direction along which the inorganic material is deposited in the birefringent layer and a surface of the transparent substrate is other than 90°, wherein the phase difference compensation element is disposed to face a liquid crystal panel, and is configured to compensate a residual retardance of the liquid crystal panel, and wherein the phase difference compensation element satisfies the following formula (1): 0.5<A/B<1.5 ??Formula (1).
    Type: Application
    Filed: October 27, 2020
    Publication date: June 3, 2021
    Applicant: Dexerials Corporation
    Inventor: Junichi SUGAWARA
  • Publication number: 20210165151
    Abstract: An optical element including a substrate that is transparent to light at a using wavelength band, an antireflection layer, a matching layer, and a birefringent layer formed of an oblique angle vapor deposition film, wherein an optical loss in the optical element at the using wavelength band is 1.0% or less, and the optical loss is calculated using the following formulae from intensity of transmitted light and intensity of reflected light measured by S-polarized light at an incident angle of 5° in the optical element, Transmittance=intensity of transmitted light/intensity of incident light (%) Reflectance=intensity of reflected light/intensity of incident light (%) Optical loss (%)=100%?transmittance (%)?reflectance (%).
    Type: Application
    Filed: November 27, 2020
    Publication date: June 3, 2021
    Applicant: DEXERIALS CORPORATION
    Inventors: Junichi SUGAWARA, Masatoshi SASAKI, Hironori OSHIMA, Junichi MIZUMA
  • Patent number: 10996388
    Abstract: To provide a manufacturing method of a phase difference element which is superior in moisture resistance. After forming an optically anisotropic layer by way of oblique vapor deposition on a substrate, the optically anisotropic layer is covered by a protective layer made by depositing an inorganic compound by way of an atomic layer deposition method. More specifically, established is a manufacturing method of a phase difference element containing a transparent substrate, optically anisotropic layer containing a birefringent film and a protective layer, the method including: an optically anisotropic layer formation step of forming an optically anisotropic layer by forming a birefringent film by way of oblique vapor deposition; and a protective layer formation step of forming a protective layer by depositing an inorganic compound by way of an atomic layer deposition method.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: May 4, 2021
    Assignee: Dexerials Corporation
    Inventors: Junichi Sugawara, Yoshi Kanega, Toshiaki Sugawara
  • Patent number: 10886112
    Abstract: Provided are a Mn—Zn—W—O sputtering target having excellent crack resistance and a production method therefor. The Mn—Zn—W—O sputtering target has a chemical composition containing Mn, Zn, W, and O. From an X-ray diffraction pattern of the Mn—Zn—W—O sputtering target, a ratio PMnO/PW of a maximum peak intensity PMnO of a peak due to a manganese oxide composed only of Mn and O to a maximum peak intensity PW of a peak due to W is 0.027 or less.
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: January 5, 2021
    Assignee: Dexerials Corporation
    Inventors: Junichi Sugawara, Yuichi Kamori, Fusashige Tokutake
  • Patent number: 10811237
    Abstract: Provided is a Mn—Zn—O sputtering target which can be used in DC sputtering, and a production method for the target. The Mn—Zn—O sputtering target comprises a chemical composition containing Mn, Zn, O, and at least one element X, the element X being a single one or two elements selected from the group consisting of W and Mo. The target has a relative density of 90% or more and a specific resistance of 1×10?3 ?·cm or less.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: October 20, 2020
    Assignee: Dexerials Corporation
    Inventors: Junichi Sugawara, Yuichi Kamori
  • Publication number: 20200284964
    Abstract: An optical element and a projection image display apparatus capable of obtaining excellent tolerance to light of high luminance and high output. The optical element includes a substrate transparent to light in a used wavelength band, and a birefringent layer including an obliquely deposited film containing hafnium oxide as a main component. The projection image display apparatus includes a liquid crystal display device having the optical element, a light source for emitting light, and a projection optical system for projecting modulated light, and the liquid crystal display device is disposed in an optical path between the light source and the projection optical system.
    Type: Application
    Filed: November 13, 2018
    Publication date: September 10, 2020
    Applicant: DEXERIALS CORPORATION
    Inventors: Junichi SUGAWARA, Yoshi KANEGA, Toshiaki SUGAWARA
  • Publication number: 20200081287
    Abstract: Provided is an optical element which significantly reduces arrangement space, has superior durability, and also enables increased costs to be curbed. Functions of a polarizer and a phase difference compensation element are integrated. Specifically, the optical element has a transparent substrate, and a polarizer on one side of the transparent substrate, and has a phase difference compensation element on a side of the transparent substrate opposite from the polarizer.
    Type: Application
    Filed: September 5, 2019
    Publication date: March 12, 2020
    Applicant: Dexerials Corporation
    Inventor: Junichi Sugawara