Patents by Inventor Yasuhiro Ishikawa

Yasuhiro Ishikawa 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: 20220238719
    Abstract: A semiconductor device with less variation in transistor characteristics is provided. The semiconductor device includes a semiconductor film, a pair of blocking films over the semiconductor film, and an insulating film provided over the semiconductor film and between the pair of blocking films. The semiconductor film includes a pair of n-type regions and an i-type region provided between the pair of n-type regions. The n-type regions overlap with the blocking films. The i-type region overlaps with the insulating film.
    Type: Application
    Filed: June 2, 2020
    Publication date: July 28, 2022
    Inventors: Shunpei YAMAZAKI, Hiromi SAWAI, Hiroki KOMAGATA, Yasuhiro JINBO, Naoki OKUNO, Yoshihiro KOMATSU, Motoharu ANDO, Tomoaki MORIWAKA, Koji MORIYA, Jun ISHIKAWA
  • Patent number: 11352478
    Abstract: A flame-retardant polycarbonate-based resin composition, including: a polycarbonate-based resin satisfying requirements (1) and (2); and a flame retardant, wherein the flame retardant is in an amount of from 0.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: June 7, 2022
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yasuhiro Ishikawa, Tomoko Abe, Yohei Koori
  • Publication number: 20220136517
    Abstract: A sealing device includes a plurality of non-contact seals provided along a sealed shaft; a contact seal provided on at least one of two sides of the plurality of non-contact seals; an injection part that supplies purge gas into a first space of spaces arranged in an axial direction of the sealed shaft, the spaces being between the plurality of non-contact seals and the contact seal; and a collector that collects the purge gas from a second space of the spaces between the plurality of non-contact seals and the contact seal, the second space being positioned to be next to the first space in the axial direction.
    Type: Application
    Filed: August 2, 2019
    Publication date: May 5, 2022
    Applicant: IHI Corporation
    Inventors: Toru KUGA, Yasuhiro ISHIKAWA
  • Publication number: 20220136593
    Abstract: A friction engaging device includes a plurality of first plates slidably fitted to an outer periphery side cylindrical member, a plurality of second plates slidably fitted to an inner periphery side cylindrical member, a piston pushing the first plates and the second plates by moving in an axial direction, a biasing member applying a bias force to the piston in the axial direction, and a plate member supporting a first end of the biasing member. The plate member slides in the axial direction in a state where the plate member is fitted to either one of the outer periphery side cylindrical member and the inner periphery side cylindrical member.
    Type: Application
    Filed: November 8, 2019
    Publication date: May 5, 2022
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventor: Yasuhiro ISHIKAWA
  • Patent number: 11312860
    Abstract: Provided is a polycarbonate-based resin composition, including: 50 mass % or more to 99 mass % or less of a polycarbonate-based resin (S) containing 0.1 mass % or more to 100 mass % or less of a polycarbonate-polyorganosiloxane copolymer (A), which contains a polycarbonate block (A-1) formed of a specific repeating unit and a polyorganosiloxane block (A-2) containing a specific repeating unit, and 0 mass % or more to 99.9 mass % or less of an aromatic polycarbonate-based resin (B) except the polycarbonate-polyorganosiloxane copolymer (A); and 1 mass % or more to 50 mass % or less of a polyester-based resin (C), wherein the polyorganosiloxane block (A-2) has an average chain length of from 20 or more to less than 50, and a 3-millimeter thick plate formed of the polycarbonate-based resin composition has a total light transmittance of 80% or more.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: April 26, 2022
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventor: Yasuhiro Ishikawa
  • Patent number: 11267969
    Abstract: Provided is a polycarbonate-based resin composition, including: 50 mass % or more to 99 mass % or less of a polycarbonate-based resin (S) containing 0.1 mass % or more to 100 mass % or less of a polycarbonate-polyorganosiloxane copolymer (A), which contains a polycarbonate block (A-1) formed of a specific repeating unit and a polyorganosiloxane block (A-2) containing a specific repeating unit, and 0 mass % or more to 99.9 mass % or less of an aromatic polycarbonate-based resin (B) except the polycarbonate-polyorganosiloxane copolymer (A); and 1 mass % or more to 50 mass % or less of a polyester-based resin (C), wherein the polyorganosiloxane block (A-2) has an average chain length of from 20 or more to less than 50, and a 3-millimeter thick plate formed of the polycarbonate-based resin composition has a total light transmittance of 80% or more.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: March 8, 2022
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventor: Yasuhiro Ishikawa
  • Patent number: 11203664
    Abstract: Provided is a polycarbonate-based resin composition, including: 50 mass % or more to 99 mass % or less of a polycarbonate-based resin (S) containing 0.1 mass % or more to 100 mass % or less of a polycarbonate-polyorganosiloxane copolymer (A), which contains a polycarbonate block (A-1) formed of a specific repeating unit and a polyorganosiloxane block (A-2) containing a specific repeating unit, and 0 mass % or more to 99.9 mass % or less of an aromatic polycarbonate-based resin (B) except the polycarbonate-polyorganosiloxane copolymer (A); 1 mass % or more to 50 mass % or less of a polyester-based resin (C); and 0.001 part by mass or more to 1 part by mass or less of an amide compound (D) with respect to 100 parts by mass of a total amount of the polycarbonate-based resin (S) and the polyester-based resin (C).
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: December 21, 2021
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventor: Yasuhiro Ishikawa
  • Patent number: 11186714
    Abstract: A polycarbonate-based resin composition, including: a polycarbonate-based resin satisfying requirements (1) and (2); and a styrene-based resin blended into the polycarbonate-based resin, wherein a ratio of the polycarbonate-based resin in 100 mass % of a total amount of the polycarbonate-based resin and the styrene-based resin is from 50 mass % or more to 99 mass % or less: (1) the polycarbonate-based resin contains a polycarbonate-polyorganosiloxane copolymer containing a polycarbonate block formed of a specific repeating unit and a polyorganosiloxane block containing a specific repeating unit, and an aromatic polycarbonate-based resin except the polycarbonate-polyorganosiloxane copolymer; and (2) the polycarbonate-based resin has a structure in which a domain containing the polyorganosiloxane block is present in a matrix containing the aromatic polycarbonate-based resin as a main component, and a domain containing at least one selected from a block derived from the aromatic polycarbonate-based resin and the
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: November 30, 2021
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yasuhiro Ishikawa, Tomoko Abe, Yohei Koori
  • Patent number: 11155712
    Abstract: Provided is a polycarbonate-polyorganosiloxane copolymer including polycarbonate blocks (A-1) each formed of a specific repeating unit and polyorganosiloxane blocks (A-2) each containing a specific repeating unit, wherein the polycarbonate-polyorganosiloxane copolymer satisfies the following expression (F1a): 15?wM1??(F1a) wherein wM1 represents the average content of the polyorganosiloxane blocks (A-2) in polycarbonate-polyorganosiloxane copolymers each having a molecular weight determined by using a polycarbonate as a conversion reference of from 56,000 or more to 200,000 or less among polycarbonate-polyorganosiloxane copolymers obtained through the separation of the polycarbonate-polyorganosiloxane copolymer by gel permeation chromatography.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: October 26, 2021
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yasuhiro Ishikawa, Tomoko Abe, Takafumi Akimoto
  • Patent number: 11143279
    Abstract: A transmission includes: a torque converter; a transmission input shaft; a seal member sandwiched between the hollow shaft and the transmission input shaft; and a bush, the transmission input shaft including a large diameter portion abutted on the seal member, and a small diameter portion which is positioned on the tip end side of the large diameter portion, and which has a diameter smaller than a diameter of the large diameter portion, the seal member having a diameter larger than a diameter of the bush, and the small diameter portion having an axial length set to be longer than a length from an insertion inlet of the transmission input shaft of the bush to the seal member.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: October 12, 2021
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventor: Yasuhiro Ishikawa
  • Publication number: 20210284838
    Abstract: A polycarbonate-based resin composition, including: a polycarbonate-based resin satisfying requirements (1) and (2); and an inorganic filler blended into the polycarbonate-based resin, wherein a ratio of the filler in 100 mass % of a total amount of the polycarbonate-based resin and the filler is from 0.
    Type: Application
    Filed: March 1, 2018
    Publication date: September 16, 2021
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yasuhiro ISHIKAWA, Tomoko ABE
  • Publication number: 20210284837
    Abstract: Provided are a polycarbonate-based resin composition, including: 99 mass % to 1 mass % of a polycarbonate-polyorganosiloxane copolymer (A) having a predetermined repeating unit (A-1) and predetermined constituent units (A-2) and (A-3); and 1 mass % to 99 mass % of a polycarbonate-based resin (B) except the polycarbonate-polyorganosiloxane copolymer (A), and a molded body thereof.
    Type: Application
    Filed: October 3, 2017
    Publication date: September 16, 2021
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yasuhiro ISHIKAWA, Aki YAMADA
  • Patent number: 11111386
    Abstract: Provided is a polycarbonate-polyorganosiloxane copolymer including polycarbonate blocks (A-1) each formed of a specific repeating unit and polyorganosiloxane blocks (A-2) each containing a specific repeating unit, wherein the polycarbonate-polyorganosiloxane copolymer satisfies the following expression (F1a): 15?wM1??(F1a) wherein wM1 represents the average content of the polyorganosiloxane blocks (A-2) in polycarbonate-polyorganosiloxane copolymers each having a molecular weight determined by using a polycarbonate as a conversion reference of from 56,000 or more to 200,000 or less among polycarbonate-polyorganosiloxane copolymers obtained through the separation of the polycarbonate-polyorganosiloxane copolymer by gel permeation chromatography.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: September 7, 2021
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yasuhiro Ishikawa, Tomoko Abe, Takafumi Akimoto
  • Patent number: 11091637
    Abstract: Provided is a polycarbonate-polyorganosiloxane copolymer including polycarbonate blocks (A-1) each formed of a specific repeating unit and polyorganosiloxane blocks (A-2) each containing a specific repeating unit, wherein the polycarbonate-polyorganosiloxane copolymer satisfies the following expression (F1a): 15?wM1??(F1a) wherein wM1 represents the average content of the polyorganosiloxane blocks (A-2) in polycarbonate-polyorganosiloxane copolymers each having a molecular weight determined by using a polycarbonate as a conversion reference of from 56,000 or more to 200,000 or less among polycarbonate-polyorganosiloxane copolymers obtained through the separation of the polycarbonate-polyorganosiloxane copolymer by gel permeation chromatography.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: August 17, 2021
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yasuhiro Ishikawa, Tomoko Abe, Takafumi Akimoto
  • Patent number: 11073243
    Abstract: A low-temperature tank includes a container main body. The container main body includes a metal liner forming a storage space and a wall member formed of carbon fiber reinforced plastic wound on an outer peripheral surface of the metal liner. The metal liner includes a bent portion that extends in two directions intersecting each other on a surface thereof and that is bent to project toward the storage space.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: July 27, 2021
    Assignee: IHI Corporation
    Inventors: Yasuhiro Ishikawa, Hatsuo Mori
  • Patent number: 11072703
    Abstract: Provided is a polycarbonate-based resin composition, including: 50 mass % or more to 99 mass % or less of a polycarbonate-based resin (S) containing a polycarbonate-polyorganosiloxane copolymer (A) containing a polycarbonate block (A-1) formed of a specific repeating unit and a polyorganosiloxane block (A-2) containing a specific repeating unit, and an aromatic polycarbonate-based resin (B) except the polycarbonate-polyorganosiloxane copolymer (A); and 1 mass % or more to 50 mass % or less of a polyester-based resin (C), wherein the polyorganosiloxane block (A-2) has an average chain length of from 50 or more to 500 or less.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: July 27, 2021
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yasuhiro Ishikawa, Tomoko Abe, Yohei Koori
  • Patent number: 11066556
    Abstract: Provided is a polycarbonate-based resin composition containing: a polycarbonate-polyorganosiloxane copolymer (A-1) which contains a specific repeating unit and in which a polyorganosiloxane block has an average chain length of 20 or more and less than 60; a polycarbonate-polyorganosiloxane copolymer (A-2) which contains a specific repeating unit and in which a polyorganosiloxane block has an average chain length of 60 or more and less than 500; and a polycarbonate-based resin (A-3) except the polycarbonate-polyorganosiloxane copolymer (A-1) and the polycarbonate-polyorganosiloxane copolymer (A-2), wherein the ratio of the polycarbonate-based resin (A-3) to the total weight of the polycarbonate-polyorganosiloxane copolymer (A-1), the polycarbonate-polyorganosiloxane copolymer (A-2), and the polycarbonate-based resin (A-3) is 10 mass % or more.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: July 20, 2021
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Aki Yamada, Yasuhiro Ishikawa
  • Publication number: 20210215239
    Abstract: The present invention relates to a lock-up clutch of a torque converter. A cover (10) is separated to a pilot (48) and includes an opening (10-1) for installing the pilot (48). Before assembling a clutch driving portion such as a piston, a separator, drive plates, a seal ring, and driven plates, to the pilot (48), rivets (53) are press-fitted into the pilot (48), the cover (10) is abutted to respective head portions of the rivets (53), and the pilot (48) is installed in the cover (10) and is fixed to the cover (10) by welding. Thereafter, the piston, the drive plates and the driven plates are disposed between the separator and the cover (10), the seal ring is contact with the separator, the separator is press-fitted into projection ends of the rivets (53), and then projection portions (53-2) of the rivets (53) are crimped.
    Type: Application
    Filed: August 23, 2019
    Publication date: July 15, 2021
    Applicants: UNIPRES CORPORATION, JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Nobuhiko FURUYA, Ryuta MORI, Mitsuyoshi TAKO, Daisuke NAKAHARA, Koshi ASAO, Daisuke USUI, Takumi WATANABE, Yasuhiro ISHIKAWA
  • Publication number: 20210147685
    Abstract: Provided is a polycarbonate-based resin composition, including: 50 mass % or more to 99 mass % or less of a polycarbonate-based resin (S) containing 0.1 mass % or more to 100 mass % or less of a polycarbonate-polyorganosiloxane copolymer (A), which contains a polycarbonate block (A-1) formed of a specific repeating unit and a polyorganosiloxane block (A-2) containing a specific repeating unit, and 0 mass % or more to 99.9 mass % or less of an aromatic polycarbonate-based resin (B) except the polycarbonate-polyorganosiloxane copolymer (A); and 1 mass % or more to 50 mass % or less of a polyester-based resin (C), wherein the polyorganosiloxane block (A-2) has an average chain length of from 20 or more to less than 50, and a 3-millimeter thick plate formed of the polycarbonate-based resin composition has a total light transmittance of 80% or more.
    Type: Application
    Filed: June 26, 2018
    Publication date: May 20, 2021
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventor: Yasuhiro ISHIKAWA
  • Patent number: 10975225
    Abstract: Provided is a polycarbonate-based resin composition, including 0.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: April 13, 2021
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Aki Yamada, Yasuhiro Ishikawa