Patents by Inventor Koji Sakai

Koji Sakai 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: 20210109269
    Abstract: The present invention provides: (I) a display device including a display panel, a retardation layer, and a polarizer which are stacked in the stated order from a back surface side to a viewing surface side and integrated without an adhesive layer; and (II) a method for producing a display device including: forming a first alignment film on a display panel, applying a solution containing first polymerizable liquid crystal to the first alignment film, and curing the first polymerizable liquid crystal to produce a retardation layer; and forming a second alignment film on the retardation layer, applying a solution containing second polymerizable liquid crystal and a dichroic material to the second alignment film, and curing the second polymerizable liquid crystal to produce a polarizer.
    Type: Application
    Filed: March 23, 2018
    Publication date: April 15, 2021
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: AKIRA SAKAI, MASAHIRO HASEGAWA, ATSUSHI BAN, KOJI MURATA, YUICHI KAWAHIRA, KIYOSHI MINOURA, TAKAKO KOIDE, KOZO NAKAMURA
  • Patent number: 10980114
    Abstract: A printed circuit board according to one embodiment of the present invention is a printed circuit board including a plate-shaped or a sheet-shaped insulating material having a penetrating hole, and a metal plating layer layered on both surfaces of the insulating material and an inner peripheral surface of the insulating material, wherein an inner diameter of the penetrating hole monotonically decreases from a top surface of the insulating material toward a back surface, and wherein the inner diameter of the penetrating hole at a center in a thickness direction of the insulating material is smaller than an average of an opening diameter on the top side and an opening diameter on the back side.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: April 13, 2021
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC PRINTED CIRCUITS, INC.
    Inventors: Eiko Imazaki, Koji Nitta, Kousuke Miura, Shoichiro Sakai, Kenji Takahashi, Masahiro Matsumoto, Hirohisa Saito
  • Publication number: 20210103083
    Abstract: The present invention provides a method for producing a retardation film excellent in retardation controllability against heat and the retardation film. The method for producing a retardation film includes, in the following order: fixing an alignment of liquid crystal compounds to form a retardation giving layer, and heating the retardation giving layer. Preferably, the heating is first heating and the method further includes second heating for heating the retardation giving layer after the first heating.
    Type: Application
    Filed: July 18, 2017
    Publication date: April 8, 2021
    Inventors: KOJI MURATA, AKIRA SAKAI, YUICHI KAWAHIRA, MASAHIRO HASEGAWA, TAKAKO KOIDE, KOZO NAKAMURA, KIYOSHI MINOURA
  • Patent number: 10962839
    Abstract: The liquid crystal display panel includes in the following order from a viewing surface side to a back surface side: a first polarizer; a first ?/4 retardation layer; a first substrate; a second ?/4 retardation layer; a liquid crystal layer; a second substrate; and a second polarizer, the liquid crystal display panel being in a transverse electric field mode, the first substrate including a color filter layer in a display region, the second ?/4 retardation layer being a single layer covering the color filter layer and including a first retardation portion in an end region of the display region and a second retardation portion in a central region of the display region, the first retardation portion having a greater thickness than the second retardation portion, and the first retardation portion and the second retardation portion differing from each other in in-plane retardation by 10 nm or less.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: March 30, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuichi Kawahira, Kiyoshi Minoura, Akira Sakai, Takako Koide, Masahiro Hasegawa, Koji Murata
  • Patent number: 10952321
    Abstract: A printed circuit board according to one aspect of the present invention includes an insulating layer having a through-hole, a conductive layer laminated on an inner circumferential surface of the through-hole, and metal plating layers laminated on a surface of the conductive layer facing opposite the insulating layer and laminated on both surfaces of the insulating layer, wherein an average thickness of the insulating layer is greater than or equal to 5 ?m and less than or equal to 50 ?m, wherein an average thickness of the metal plating layers is greater than or equal to 3 ?m and less than or equal to 50 ?m, wherein a hole diameter of the through-hole gradually increases from a first end of the through-hole at one surface of the insulating layer to a second end of the through-hole at another surface of the insulating layer, wherein the hole diameter of the through-hole at the first end is greater than or equal to 1.5 times, and less than or equal to 2.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: March 16, 2021
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC PRINTED CIRCUITS, INC.
    Inventors: Kenji Takahashi, Koji Nitta, Shoichiro Sakai, Junichi Okaue
  • Patent number: 10948778
    Abstract: A liquid crystal display panel of the present invention includes, sequentially from the viewer side: a first linearly polarizing plate; a first ?/4-wavelength layer; a first substrate including a color filter, a black matrix, and a second ?/4-wavelength layer; a liquid crystal layer; a second substrate; and a second linearly polarizing plate, the liquid crystal display panel further including a sealing material disposed so as to surround the liquid crystal layer in a plan view, wherein the second ?/4-wavelength layer is disposed closer to the liquid crystal layer than the color filter and the black matrix are and such that an outer edge of the second ?/4-wavelength layer lies inside an arrangement region of the sealing material, and the first ?/4-wavelength layer and the second ?/4-wavelength layer are disposed such that their slow axes are perpendicular to each other.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: March 16, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masahiro Hasegawa, Koji Murata, Yuichi Kawahira, Takako Koide, Kozo Nakamura, Akira Sakai, Kiyoshi Minoura
  • Patent number: 10937942
    Abstract: A piezoelectric element includes a substrate, a first electrode formed on the substrate, a piezoelectric layer, which is a layered structure of a plurality of piezoelectric films each containing potassium, sodium, and niobium, formed on the first electrode, and a second electrode formed on the piezoelectric layer. A sodium concentration in the piezoelectric layer has a Na local maximum value, which is a local maximum value of the sodium concentration, in a first piezoelectric film, which is among the plurality of piezoelectric films, in the vicinity of the first electrode, a sodium concentration gradient decreasing from the Na local maximum value toward the second electrode, and a Na local minimum value, which is a local minimum value of the sodium concentration, near a boundary between the first piezoelectric film and a second piezoelectric film formed immediately above the first piezoelectric film.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: March 2, 2021
    Inventors: Kazuya Kitada, Koji Sumi, Tomohiro Sakai, Toshiaki Takahashi, Tsutomu Asakawa
  • Patent number: 10936072
    Abstract: A haptic information presentation system uses a human sensory characteristic or illusion to suitably control a physical quantity, and causes a person to feel a force which cannot exist physically, or a haptic sensory physical characteristic.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: March 2, 2021
    Assignees: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, MIRAISENS, INC.
    Inventors: Norio Nakamura, Yukio Fukui, Masataka Sakai, Natsuo Koda, Koji Osaki
  • Patent number: 10925848
    Abstract: An object of the present invention is to find a novel pharmaceutical that has an excellent tryptophanase inhibitory effect, and suppresses worsening of renal function to preserve the kidney by reducing production of indoxyl sulfate in the blood. Provided is a pharmaceutical composition containing, as an active ingredient, a compound represented by formula (I) or a pharmacologically acceptable salt thereof. In the formula (I), R1 and R2 are the same or different, and represent a C1-C6 alkyl group, a halogeno C1-C6 alkyl group or a C3-C6 cycloalkyl group; n represents 0, 1 or 2; each X represents a C1-C6 alkyl group, a C3-C6 cycloalkyl group, a halogen atom or the like; and Y represents a hydrogen atom, a C1-C6 alkoxy group, a C3-C6 cycloalkoxy group or a halogeno C1-C6 alkoxy group.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: February 23, 2021
    Assignee: Daiichi Sankyo Company, Limited
    Inventors: Tsuyoshi Soneda, Hiroki Sakai, Koji Matsumoto, Naomi Tanaka, Taichi Fukunaga
  • Patent number: 10919997
    Abstract: The purpose of the present invention is to obtain an ethylene.?-olefin.non-conjugated polyene copolymer that has a low permanent compression set at low temperatures, is flexible, and has an excellent balance of rubber elasticity at low temperatures and tensile strength at normal temperatures. This ethylene-based polymer is an ethylene.?-olefin.non-conjugated polyene copolymer that includes units derived from ethylene (A), units derived from an ?-olefin (B) containing 4-20 carbon atoms, and units derived from a non-conjugated polyene (C) and satisfies (1)-(4). (1) The molar ratio of (A) to (B) is 40/60-90/10, (2) the contained amount of the units derived from (C) is 0.1-6.0 mol %, (3) ML(1+4)125° C. is 5-100, and (4) the B value is 1.20 or more.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: February 16, 2021
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Koji Endo, Mayumi Hiwara, Sadahiko Matsuura, Yusuke Mizobuchi, Yuichi Yamamura, Yuji Noguchi, Yuji Ishii, Tatsuya Sakai, Keisuke Shishido, Kotaro Ichino, Kiyohide Inomata, Fumito Takeuchi, Kenta Ide
  • Publication number: 20210039131
    Abstract: A substrate processing apparatus includes a cover member placed to surround a substrate held by a rotary holder; a collecting member placed in an exhaust path formed between the cover member and the rotary holder; and a solvent supply placed above the collecting member and configured to supply a solvent to the collecting member. The solvent supply includes an inner storage space surrounding the substrate; an outer storage space surrounding the inner storage space; and a partition wall extending along a circumferential direction to partition the inner storage space and the outer storage space. Multiple communication holes are extended to penetrate the partition wall such that the solvent introduced into the outer storage space flows to the inner storage space. Multiple dripping holes are extended to penetrate a bottom wall of the inner storage space such that the solvent within the inner storage space drops toward the collecting member.
    Type: Application
    Filed: August 6, 2020
    Publication date: February 11, 2021
    Inventors: Satoshi Shimmura, Yuji Sakai, Kenta Shibasaki, Koji Takayanagi, Kenji Yada, Hiroichi Inada, Shinichi Seki, Kento Ogata
  • Patent number: 10917967
    Abstract: A printed wiring board includes an insulator having a first surface, and a second surface opposite to the first surface, a through-hole penetrating from the first surface to the second surface, and a metal plated layer formed on the first and second surfaces of the insulator, and on an inner peripheral surface of the through-hole, wherein an inside diameter of the through-hole gradually decreases from the first surface toward the second surface of the insulator. An average diameter of the through-hole is 20 ?m or greater and 35 ?m or less at the first surface, and is 3 ?m or greater and 15 ?m or less at the second surface, and an average thickness of the metal plated layer formed on the first and second surfaces is 8 ?m or greater and 12 ?m or less.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: February 9, 2021
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kenji Takahashi, Eiko Imazaki, Koji Nitta, Shoichiro Sakai, Kousuke Miura, Masahiro Matsumoto, Hirohisa Saito
  • Patent number: 10907628
    Abstract: An inverter is disposed at a position on the upstream side relative to a compression mechanism along the flow of a refrigerant and the position cooled by the refrigerant. A motor is disposed at a position heated by the refrigerant compressed by the compression mechanism. A control device changes an upper limit value of a driving current supplied to the motor on the basis of at least one of first information relating to the temperature of the motor or second information relating to the temperature of the inverter.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: February 2, 2021
    Assignee: DENSO CORPORATION
    Inventor: Koji Sakai
  • Patent number: 10908075
    Abstract: A fluorescent spectrum correcting method includes comparing fluorescent spectrum obtained from micro-particles labeled with a plurality of fluorescent pigments with reference spectrum to separating the fluorescent spectrum into fluorescent spectrum for each pigment, and previously measured spectrum data is used as the reference spectrum.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: February 2, 2021
    Assignee: SONY CORPORATION
    Inventors: Masaya Kakuta, Koji Futamura, Yoshitsugu Sakai, Yasunobu Kato
  • Patent number: 10899194
    Abstract: An air-conditioning control apparatus for a vehicle capable of unmanned driving includes a determining section that is configured to determine whether an occupant is in the vehicle and an output section that is configured to execute an air-conditioning control based on a determination result by the determining section. The output section is configured to execute the air-conditioning control based on ride schedule information indicating a length of time until an occupant rides in the vehicle when the vehicle is determined to be in an unmanned state.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: January 26, 2021
    Assignee: DENSO CORPORATION
    Inventors: Koji Sakai, Shinsuke Konishi, Hiromitsu Maehata
  • Patent number: 10895719
    Abstract: A projection system including seven lens groups sequentially arranged from an enlargement side, a first lens group having negative refractive power, a second lens group having positive refractive power, a third lens group having positive refractive power, a fourth lens group having negative refractive power, a fifth lens group having positive refractive power, a sixth lens group having positive refractive power, and a seventh lens group having positive refractive power, wherein ?dR that is a dispersion value of a lens that forms the seventh lens group out of the seven lens groups and is closest to a reduction side and ?dF that is a dispersion value of a lens that forms the first lens group out of the seven lens groups and is closest to the enlargement side satisfy a following conditional expression: 5<?dR??dF<30.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: January 19, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Toshihiko Sakai, Koji Shiokawa
  • Patent number: 10897185
    Abstract: An electric device includes a case, an electric component that is provided in the case and has a main body section and a lead terminal extending from the main body section, the main body section being supported on the case, a circuit board that is provided in the case and has a connecting hole through which the lead terminal is inserted, and a guide member that has a guide hole positioned relative to the connecting hole, the lead terminal being disposed to penetrate through the guide hole.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: January 19, 2021
    Assignee: DENSO CORPORATION
    Inventor: Koji Sakai
  • Patent number: 10890805
    Abstract: A liquid crystal display device includes sequentially from a viewing surface side: a first polarizer; an out-cell retardation layer; a first substrate; an in-cell retardation layer; a horizontally aligned liquid crystal layer; a second substrate; and a second polarizer. The liquid crystal display device includes a viewing angle compensation film between the first polarizer and the out-cell retardation layer or between the second substrate and the second polarizer. The out-cell retardation layer is a laminate including sequentially from a viewing surface side: a first retardation layer having an NZ coefficient of 1.0-1.1 and an Re of 120 nm or greater and smaller than 137.5 nm; and a second retardation layer having an Re of 0-10 nm and an Rth of 80-150 nm. The in-cell retardation layer is a third retardation layer having an NZ coefficient of 0.7-1.4 and an Re of 120 nm or greater and smaller than 137.5 nm.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: January 12, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masahiro Hasegawa, Akira Sakai, Takako Koide, Yuichi Kawahira, Koji Murata, Kiyoshi Minoura
  • Patent number: 10886531
    Abstract: Provided is a method for producing a negative electrode for an electric storage device, the method comprising the steps of preparing a negative electrode composition comprising a negative electrode active material that reversibly carries a sodium ion, metal sodium, and a liquid dispersion medium for dispersing them; allowing a negative electrode current collector to hold the negative electrode composition; evaporating at least part of the liquid dispersion medium from the negative electrode composition held by the negative electrode current collector, thereby giving a negative electrode precursor comprising the negative electrode active material, the metal sodium, and the negative electrode current collector; and bringing the negative electrode precursor into contact with an electrolyte having sodium ion conductivity, thereby doping the negative electrode active material with sodium eluted from the metal sodium.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: January 5, 2021
    Assignees: Sumitomo Electric Industries, Ltd., Nippon Soda Co., Ltd.
    Inventors: Koji Nitta, Shoichiro Sakai, Atsushi Fukunaga, Eiko Imazaki, Koma Numata, Hideaki Ito, Hitoshi Kobayashi, Toshiaki Yamashita, Shinichi Maruyama
  • Patent number: 10882393
    Abstract: A fuel supply device includes a valve body and a filter unit accommodating an air filter and a valve cap are attached to a tubular portion provided on a side surface of an inlet pipe. When a fuel tank has a negative pressure, the valve body opens and the negative pressure is eliminated by clean atmospheric air introduction. A projection portion is provided on the filter unit side of the valve body. Accordingly, attachment of the valve body into the tubular portion and attachment of the tubular portion and the filter unit are reliably performed, the reliability of valve body opening and closing is improved, and attachment workability is improved.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: January 5, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Koji Kojima, Takanori Sakai, Yoshihiro Ito, Kazuhiro Tashiro, Shinji Shimokawa