Patents by Inventor Yukio Yoshida

Yukio Yoshida 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: 20240150670
    Abstract: A lubricating oil additive composition containing a polymer-based compound may be excellent in solubility in a mineral oil and wear resistance, and favorable as a friction modifier. A lubricating oil composition may contain the additive composition. Such a lubricating oil additive composition may contain a copolymer (X) containing: (a) a structural unit derived from a monomer (A) having a (meth)acryloyl group and a linear or branched alkyl group having 6 to 24 carbon atoms; (b) a structural unit derived from a monomer (B) having a (meth)acryloyl group and a polar group; and (c) a structural unit derived from a monomer (C) having a polymerizable functional group and a cyclic structure group. The copolymer (X) may have a content of the structural unit (a) of 43% by mol or more based on the total structural units of the copolymer (X), and a mass average molecular weight (Mw) of 5,000 to 90,000.
    Type: Application
    Filed: March 31, 2022
    Publication date: May 9, 2024
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Shota KATO, Yukio YOSHIDA
  • Publication number: 20240124407
    Abstract: A compound represented by the following general formula (B1). Further disclosed is a corrosion inhibitor (B) containing one or more selected from the compound represented by the following formula (B1). Further disclosed is a lubricant composition containing an ionic liquid (A) and the corrosion inhibitor (B). The compound and the corrosion inhibitor are excellent in stability in any of a high vacuum, a low-temperature environment, a high-temperature environment, and an ordinary temperature-ordinary pressure environment, and the lubricant composition containing the corrosion inhibitor is excellent in metal corrosion resistance, solubility, and low evaporability. In the general formula (B1), M is an alkali metal and RB11 is an alkylene group having 1 to 19 carbon atoms.
    Type: Application
    Filed: December 24, 2021
    Publication date: April 18, 2024
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Yukio YOSHIDA, Yusuke NAKANISHI, Hideaki HATTORI
  • Publication number: 20240026242
    Abstract: A lubricating oil additive composition that is suitable as a load bearing additive, and is excellent in wear resistance, extreme pressure property, and thermal stability, and a lubricating oil composition containing the lubricating oil additive composition. A lubricating oil additive composition containing a poly(meth)acrylate-based copolymer (X) containing a structural unit (a) derived from a particular alkyl (meth)acrylate (A), a structural unit (b) derived from a particular hydroxy group containing (meth)acrylate (B), and a structural unit (c) derived from a particular phosphorus-containing (meth)acrylate (C).
    Type: Application
    Filed: December 28, 2021
    Publication date: January 25, 2024
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Yukio YOSHIDA, Shota KATO, Hideto KAMIMURA
  • Patent number: 11860464
    Abstract: An optical stack includes: a light scattering film converting light received at a light receiving surface into scattering light therein and then outputting the scattering light outside from a light output surface, and a sheet provided on the light output surface side of the light scattering film. The light scattering film includes: a functional layer formed of a light-transmissive composition including an organic polymer compound and light scattering particles. The functional layer includes a first surface receiving the light and a second surface from which the scattering light is output. The functional layer includes a particle layer formed of light scattering particles having a content of 60% by volume or higher among the light scattering particles, the particle layer expanding along the first surface and being concentrated in a direction perpendicular to the first surface.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: January 2, 2024
    Assignee: SAKAI DISPLAY PRODUCTS CORPORATION
    Inventors: Shintaro Yamada, Yukio Yoshida, Atsuko Maeda, Sumire Hombo, Hideki Nakagawa, Mitsuhiro Takeba, Toshihiro Yamashita, Katsumi Kondo
  • Publication number: 20230272297
    Abstract: A lubricating oil composition may have a high flash point, a low pour point, and excellent electrical insulation, while having excellent cooling performance. Such a lubricating oil composition may include a base oil (A), wherein the base oil (A) includes at least one synthetic oil (A1) selected from a polyalkylene glycol having a specific degree of polymerization and a polyvinyl ether having a specific degree of polymerization.
    Type: Application
    Filed: August 23, 2021
    Publication date: August 31, 2023
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Akio KOJIMA, Yukio YOSHIDA, Kenichi OGATA, Shota KATO, Keiichi NARITA
  • Patent number: 11698548
    Abstract: A liquid crystal display apparatus, includes: a light-condensing backlight unit; a liquid crystal panel including a first linear polarizer and a second linear polarizer; a light scattering film facing the second linear polarizer; and a third linear polarizer facing the light scattering film. The light scattering film includes a functional layer including an organic polymer compound and light scattering particles. The functional layer includes a particle layer in which a fraction of 60% by volume to 100% by volume of the light scattering particles included in the functional layer expands along a surface of the particle layer at which the light output from the liquid crystal panel is received, and the particle layer is concentrated to a region having a thickness of 1 to 80% of a total thickness of the functional layer, in a direction perpendicular to the contact surface.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: July 11, 2023
    Assignee: SAKAI DISPLAY PRODUCTS CORPORATION
    Inventors: Yukio Yoshida, Atsuko Maeda, Nobuaki Ikenaka, Katsumi Kondo, Toshihiro Yamashita, Hideki Nakagawa, Sumire Hombo, Mitsuhiro Takeba, Shintaro Yamada
  • Publication number: 20220197083
    Abstract: A liquid crystal display apparatus, includes: a light-condensing backlight unit; a liquid crystal panel including a first linear polarizer and a second linear polarizer; a light scattering film facing the second linear polarizer; and a third linear polarizer facing the light scattering film. The light scattering film includes a functional layer including an organic polymer compound and light scattering particles. The functional layer includes a particle layer in which a fraction of 60% by volume to 100% by volume of the light scattering particles included in the functional layer expands along a surface of the particle layer at which the light output from the liquid crystal panel is received, and the particle layer is concentrated to a region having a thickness of 1 to 80% of a total thickness of the functional layer, in a direction perpendicular to the contact surface.
    Type: Application
    Filed: March 27, 2020
    Publication date: June 23, 2022
    Applicant: SAKAI DISPLAY PRODUCTS CORPORATION
    Inventors: YUKIO YOSHIDA, ATSUKO MAEDA, Nobuaki IKENAKA, KATSUMI KONDO, TOSHIHIRO YAMASHITA, HIDEKI NAKAGAWA, Sumire HOMBO, Mitsuhiro TAKEBA, SHINTARO YAMADA
  • Publication number: 20220187653
    Abstract: An optical stack includes: a light scattering film converting light received at a light receiving surface into scattering light therein and then outputting the scattering light outside from a light output surface, and a sheet provided on the light output surface side of the light scattering film. The light scattering film includes: a functional layer formed of a light-transmissive composition including an organic polymer compound and light scattering particles. The functional layer includes a first surface receiving the light and a second surface from which the scattering light is output. The functional layer includes a particle layer formed of light scattering particles having a content of 60% by volume or higher among the light scattering particles, the particle layer expanding along the first surface and being concentrated in a direction perpendicular to the first surface.
    Type: Application
    Filed: March 27, 2020
    Publication date: June 16, 2022
    Inventors: SHINTARO YAMADA, YUKIO YOSHIDA, ATSUKO MAEDA, Sumire HOMBO, HIDEKI NAKAGAWA, Mitsuhiro TAKEBA, TOSHIHIRO YAMASHITA, KATSUMI KONDO
  • Publication number: 20220081513
    Abstract: A polyalkylene glycol-based compound of formula (1): may be one in which R1 is a monovalent hydrocarbon group having 1 to 32 carbon atoms, a monovalent aromatic hydrocarbon group having 6 to 42 ring carbon atoms, a monovalent acyl group having 2 to 32 carbon atoms, or a monovalent oxygen-containing hydrocarbon group having 2 to 32 carbon atoms; R2 is a monovalent hydrocarbon group having 1 to 32 carbon atoms, a monovalent aromatic hydrocarbon group having 6 to 42 ring carbon atoms, a monovalent acyl group having 2 to 32 carbon atoms, a monovalent oxygen-containing hydrocarbon group having 2 to 32 carbon atoms, or a hydrogen atom; R3 is a divalent hydrocarbon group having 4 carbon atoms; R4 is a divalent hydrocarbon group having 2 or 3 carbon atoms; m and n are respectively numbers between 1 and 40 and 0 and 20; and m/(m+n)?0.5.
    Type: Application
    Filed: December 26, 2019
    Publication date: March 17, 2022
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: So NAKAJIMA, Yukio YOSHIDA
  • Publication number: 20220064093
    Abstract: A polyalkylene glycol-based compound may have formula (1): wherein R1 is a monovalent aromatic hydrocarbon group having 6 to 42 ring carbon atoms; R2 is a monovalent aromatic hydrocarbon group having 6 to 42 carbon atoms or a hydrogen atom; R3 is a divalent hydrocarbon group having 2 to 4 carbon atoms; and m is a number in a range of from 1 to 40.
    Type: Application
    Filed: December 26, 2019
    Publication date: March 3, 2022
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: So NAKAJIMA, Yukio YOSHIDA
  • Patent number: 11035015
    Abstract: A vapor film-rupturing agent is provided that is prepared from asphalt as a staring material, so as to have a fraction (x) (% by mass) of a saturated component and a fraction (y) (% by mass) of an asphaltene component based on the total fraction 100% by mass of the saturated component, the asphaltene component, an aromatic component, and a resin component obtained by any one of analysis methods described in the Japan Petroleum Institute Standard and Manuals Testing Method for Petroleum Products JPI-5S-70-10 and the British Standard Test Method IP-469 that satisfy one or more of the following conditions (1) to (3): condition (1): 1.2926×(x)/100?8.113×(y)/100+2.3384?2.400, condition (2): (y)?7.0, and condition (3): ((y)/(x))?0.5. The vapor film-rupturing agent is capable of preparing a thermal treatment oil composition having a high vapor film-rupturing effect with a characteristic number of seconds in the cooling capability test according to JIS K2242 (2012) of 2.50 seconds or less.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: June 15, 2021
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yukio Yoshida, Hideaki Hattori, Akinori Yomogita
  • Publication number: 20200326600
    Abstract: Provided is a liquid crystal display device in which: bias is mitigated in the event that bias has occurred in the liquid crystal material of a liquid crystal layer; variations in the cell thickness do not occur; and display irregularities are controlled. A display crystal panel 1 is equipped with: a TFT substrate 2 and an opposing substrate 3 which are rectangular in shape and adhered together by a seal material 4 formed at the inner peripheral side; a liquid crystal layer 5 provided on the inner peripheral side of the seal material between the two substrates; a rectangular rim-shaped frame BM 32 provided on the liquid crystal layer 5 side of the opposing substrate 3; and a linear recessed portion 33 provided in at least a circumferential-direction section of the frame BM 32.
    Type: Application
    Filed: November 27, 2015
    Publication date: October 15, 2020
    Applicant: Sakai Display Products Corporation
    Inventors: Yukio YOSHIDA, Nobuo OKANO
  • Patent number: 10712605
    Abstract: A liquid crystal display apparatus according to an embodiment of the present invention includes a first substrate, a second substrate, and a liquid crystal layer, and has a display region defined by a plurality of pixels. The first substrate has a pixel electrode provided in each of the plurality of pixels. The second substrate has a first, a second, and a third color filter having a striped pattern extending in a first direction, and a light blocking layer. The display region includes a first and a second region spaced apart from each other in a second direction generally perpendicular to the first direction, and a third region located between the first and second regions and including the center of the display region. The light blocking layer includes, in each of the first, second, and third regions, a plurality of first light blocking portions extending in the first direction, and a plurality of second light blocking portions extending in the second direction.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: July 14, 2020
    Assignee: SAKAI DISPLAY PRODUCTS CORPORATION
    Inventor: Yukio Yoshida
  • Publication number: 20200110293
    Abstract: A liquid crystal display apparatus according to an embodiment of the present invention includes a first substrate, a second substrate, and a liquid crystal layer, and has a display region defined by a plurality of pixels. The first substrate has a pixel electrode provided in each of the plurality of pixels. The second substrate has a first, a second, and a third color filter having a striped pattern extending in a first direction, and a light blocking layer. The display region includes a first and a second region spaced apart from each other in a second direction generally perpendicular to the first direction, and a third region located between the first and second regions and including the center of the display region. The light blocking layer includes, in each of the first, second, and third regions, a plurality of first light blocking portions extending in the first direction, and a plurality of second light blocking portions extending in the second direction.
    Type: Application
    Filed: February 28, 2017
    Publication date: April 9, 2020
    Inventor: YUKIO YOSHIDA
  • Patent number: 10503022
    Abstract: A liquid crystal panel according to an embodiment of the present invention comprises: a liquid crystal layer containing liquid crystal molecules; a first alignment film in contact with a front surface of the liquid crystal layer; and a second alignment film in contact with a rear surface of the liquid crystal layer, the liquid crystal panel being curved in the shape of a cylindrical surface. The first alignment film includes a plurality of first strip portions extending along a first direction and causing the liquid crystal molecules to be aligned. The second alignment film includes a plurality of second strip portions extending along a second direction and causing the liquid crystal molecules to be aligned. The first direction is a peripheral direction of the cylindrical surface. The second direction is a direction which crosses the peripheral direction.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: December 10, 2019
    Assignee: Sakai Display Products Corporation
    Inventors: Yukio Yoshida, Masae Kitayama, Nobuo Okano, Mitsuaki Hirata
  • Patent number: 10473360
    Abstract: A fan includes: an impeller including a main plate having a first plane, a plurality of first blades each formed the first plane, and a shroud formed integrally with the plurality of first blades; a fan case; a drive source; and a rotation shaft. The first blades each include a linearly protruding region that is linearly increased in height from an outer circumferential side to an inner circumferential side, and a curvedly protruding region that is curvedly increased in height from the outer circumferential side to the inner circumferential side, the height extending in a direction in which each first blade protrudes. The linearly protruding region is welded to the main plate. Accordingly, a highly durable fan can be implemented that allows sufficient durability to be maintained even under a high temperature environment or an acid environment.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: November 12, 2019
    Assignee: NORITZ CORPORATION
    Inventors: Shuji Kameyama, Keigo Fukunishi, Mitsuo Nomura, Masaaki Takata, Yukio Yoshida, Tadashi Takewaka
  • Publication number: 20190106649
    Abstract: The present invention relates to a polyether compound having a halogen atom content of 0.1000% by mass or less in terms of a polymer molecule thereof as measured by combustion ion chromatography and a weight average molecular weight (Mw) of 140,000 or more and 1,000,000 or less.
    Type: Application
    Filed: March 30, 2017
    Publication date: April 11, 2019
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Taeko NAKANO, Yukio YOSHIDA, Tadashi KISEN, Makoto OKAMOTO
  • Patent number: 10208833
    Abstract: [Problem] To provide a chain link which can improve wear resistance even under lubricating conditions in adhesive mode. [Solution] Steel link plates 2 for a silent chain having pinholes 22 for inserting linking pins 3 are formed. A hardened layer obtained by performing heat treatment (martempering, for example) is formed on the inner circumferential surface of the pinholes 22, and a large number of hard particles hp having the same hardness as or a greater hardness than the surface hardness of said hardened layer are dotted in a crystalline state within the martensite structure on the surface layer section of the hardened layer. The hard particles hp are an oxide, carbide or nitride of any element from Cr, V, Ti and Nb which was originally present in the steel of the link plate material.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: February 19, 2019
    Assignee: BorgWarner Inc.
    Inventors: Junichi Eda, Yasushi Miyazaki, Yukio Yoshida, Kazuo Hokkirigawa
  • Publication number: 20180329239
    Abstract: The purpose of the present invention is to provide a display device wherein offsetting of substrates with each other in a liquid crystal panel by force applied during curve formation can be suppressed and thereby display defects can be reduced, and a method for manufacturing the display device. Provided is a display device that is provided with a curved liquid crystal panel comprising a pair of glass substrates that are made to face each other with liquid crystals encapsulated therebetween, said display device being provided with a translucent sheet material that is disposed on one surface side, which is the inside of the curve, of the liquid crystal panel, is larger than the liquid crystal panel, and is curved along the liquid crystal panel.
    Type: Application
    Filed: November 19, 2015
    Publication date: November 15, 2018
    Applicant: Sakai Display Products Corporation
    Inventors: Hiroki FUKAI, Nobuo OKANO, Yukio YOSHIDA
  • Publication number: 20180172314
    Abstract: A fan includes: an impeller including a main plate having a first plane, a plurality of first blades each formed the first plane, and a shroud formed integrally with the plurality of first blades; a fan case; a drive source; and a rotation shaft. The first blades each include a linearly protruding region that is linearly increased in height from an outer circumferential side to an inner circumferential side, and a curvedly protruding region that is curvedly increased in height from the outer circumferential side to the inner circumferential side, the height extending in a direction in which each first blade protrudes. The linearly protruding region is welded to the main plate. Accordingly, a highly durable fan can be implemented that allows sufficient durability to be maintained even under a high temperature environment or an acid environment.
    Type: Application
    Filed: February 15, 2018
    Publication date: June 21, 2018
    Applicant: NORITZ CORPORATION
    Inventors: Shuji KAMEYAMA, Keigo FUKUNISHI, Mitsuo NOMURA, Masaaki TAKATA, Yukio YOSHIDA, Tadashi TAKEWAKA