Patents by Inventor Shotaro Shibata

Shotaro Shibata 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).

  • Patent number: 11136416
    Abstract: A rubber composition containing a rubber and modified cellulose fibers, wherein one or more substituents selected from substituents represented by the following general formulas (1) and (2): —CH2—CH(OH)—R1 (1), —CH2—CH(OH)—CH2—(OA)n—O—R1 (2), wherein each R1 in the general formulas (1) and (2) is independently a linear or branched alkyl group having 3 or more carbon atoms and 30 or less carbon atoms; n in the general formula (2) is a number of 0 or more and 50 or less; and A is a linear or branched, divalent saturated hydrocarbon group having 1 or more carbon atoms and 6 or less carbon atoms are bonded to cellulose fibers via an ether bond, wherein the modified cellulose fibers have a cellulose I crystal structure. The rubber composition of the present invention can be suitably used for machine tool parts, household electric appliance parts, automobile parts, and the like.
    Type: Grant
    Filed: September 5, 2016
    Date of Patent: October 5, 2021
    Assignee: KAO CORPORATION
    Inventors: Yutaka Yoshida, Takuma Tsuboi, Shotaro Shibata, Yoshiaki Kumamoto, Motoi Konishi
  • Publication number: 20210230795
    Abstract: The present invention relates to a method for producing modified cellulose fibers having cellulose I crystal structure, comprising: step A: introducing Substituent Group A to cellulose fibers via an ether bond in a solvent comprising water in the presence of a base, and step B: introducing Substituent Group B to cellulose fibers via an ether bond in a solvent comprising water in the presence of a base, wherein the method includes the steps A and B concurrently, or in the order of the step A and then the step B. The cellulose fibers of the present invention obtained by the method for production of the present invention have favorable dispersibility in a hydrophobic medium and a controlled increase in viscosity.
    Type: Application
    Filed: June 11, 2019
    Publication date: July 29, 2021
    Applicant: KAO CORPORATION
    Inventors: Yutaka YOSHIDA, Shotaro SHIBATA, Haruka NAKAGAWA, Yoshiaki KUMAMOTO, Norihiro ITO, Yusaku ASAI
  • Publication number: 20210130499
    Abstract: Modified cellulose fibers comprising cellulose fibers bound to one or more substituents, via an ether bonding, selected from substituents represented by the following general formula (1) and substituents represented by the following general formula (2) and one or more substituents selected from substituents represented by the following general formula (3) and substituents represented by the following general formula (4): —CH2—CH(OH)—R1 (1); —CH2—CH(OH)—CH2—(OA)n—O—R1 (2); —CH2—CH(OH)—R2 (3); —CH2—CH(OH)—CH2—(OA)n—O—R2 (4), wherein the modified cellulose fibers have cellulose I crystal structure.
    Type: Application
    Filed: March 6, 2018
    Publication date: May 6, 2021
    Applicant: KAO CORPORATION
    Inventors: Shotaro Shibata, Yutaka Yoshida, Hisaho Kawahara, Yoshiaki Kumamoto
  • Patent number: 10971854
    Abstract: A shielded connector includes a shielding shell, a connector housing, and an annular sealing member. The shielding shell has a tube portion and a flange portion formed at an end of the tube portion. The flange portion is fastened to a wall portion having a hole of a target object to which the shielded connector is fastened. The connector housing is covered with the tube portion and has an end portion projecting in an axial direction beyond the flange portion and inserted in the hole. The sealing member is sandwiched between the flange portion and the wall portion. The sealing member closely contacts with the wall portion by being compressed toward the wall portion and closely contacts with an outer surface of the connector housing by being compressed toward the outer surface.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: April 6, 2021
    Assignee: YAZAKI CORPORATION
    Inventors: Yasuhiro Tanaka, Noboru Hayasaka, Shotaro Shibata
  • Patent number: 10906993
    Abstract: Modified cellulose fibers, wherein each of (A) one or more substituents selected from substituents represented by the following general formula (1) and substituents represented by the following general formula (2): —CH2—CH(OH)—R1 (1); —CH2—CH(OH)—CH2—(OA)n-O—R1 (2), wherein each R1 in the general formula (1) and the general formula (2) is independently a linear or branched alkyl group having 3 or more carbon atoms and 30 or less carbon atoms; n in the general formula (2) is a number of 0 or more and 50 or less; and A is a linear or branched, divalent saturated hydrocarbon group having 1 or more carbon atoms and 6 or less carbon atoms, and (B) a substituent represented by the following general formula (3): —CH2—CH(OH)—R2 (3), wherein R2 in the general formula (3) is an alkyl group having 1 or more carbon atoms and 2 or less carbon atoms, is independently bonded to cellulose fibers via an ether bond, wherein the modified cellulose fibers have a cellulose I crystal structure.
    Type: Grant
    Filed: September 5, 2016
    Date of Patent: February 2, 2021
    Assignee: KAO CORPORATION
    Inventors: Yutaka Yoshida, Shotaro Shibata, Yoshiaki Kumamoto, Takuma Tsuboi, Motoi Konishi
  • Patent number: 10847918
    Abstract: Provided are a holding structure that holds connectors in a completely fitted state by a first locking holding portion and a second locking holding portion, and an ensuring member. A locking holder includes a locking release operation portion, a cantilever locking arm portion, and a fulcrum portion. A release operation force receiving portion is provided to the ensuring member, and is disposed at such a position that the release operation force receiving portion is not in contact with the fulcrum portion when the locking release operation portion is operated by being pushed while the ensuring member is at the main locking position, and the release operation force receiving portion is in contact with the fulcrum portion when the locking release operation portion is operated by being pushed while the ensuring member is at the temporary locking position.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: November 24, 2020
    Assignee: YAZAKI CORPORATION
    Inventors: Yasuhiro Tanaka, Noboru Hayasaka, Shotaro Shibata
  • Patent number: 10770834
    Abstract: In a fitting connector, a latch hold body includes a first fulcrum portion provided on a latch-release arm portion and exerting force in a detaching direction from a second latch hold portion on a first latch hold portion with a contact point with a first release-operation force receiving portion as a fulcrum when a latch-release operation portion is pushed, and a second fulcrum portion provided on the latch-release operation portion side relative to the first fulcrum portion in the latch-release arm portion and exerting the force in the detaching direction from the second latch hold portion on the first latch hold portion with a contact point with a second release-operation force receiving portion that contacted along with continuation of push operation as a new fulcrum.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: September 8, 2020
    Assignee: YAZAKI CORPORATION
    Inventors: Yasuhiro Tanaka, Noboru Hayasaka, Shotaro Shibata
  • Patent number: 10738169
    Abstract: A resin composition containing: (A) one or more resins selected from the group consisting of a thermoplastic resin, and a curable resin selected from an epoxy resin, a (meth)acrylic resin, a phenolic resin, an unsaturated polyester resin, a polyurethane resin, or a polyimide resin; and (B) modified cellulose fibers wherein one or more substituents selected from substituents represented by the following general formulas (1) and (2): —CH2—CH(OH)—R1 (1), —CH2—CH(OH)—CH2—(OA)n-O—R1 (2), wherein each R1 in the general formulas (1) and (2) is independently a linear or branched alkyl group having 3 or more carbon atoms and 30 or less carbon atoms; n in the general formula (2) is a number of 0 or more and 50 or less; and A is a linear or branched, divalent saturated hydrocarbon group having 1 or more carbon atoms and 6 or less carbon atoms are bonded to cellulose fibers via an ether bond, wherein the modified cellulose fibers have a cellulose I crystal structure.
    Type: Grant
    Filed: September 5, 2016
    Date of Patent: August 11, 2020
    Assignee: KAO CORPORATION
    Inventors: Yutaka Yoshida, Shotaro Shibata, Yoshiaki Kumamoto
  • Publication number: 20200153149
    Abstract: Provided are a holding structure that holds connectors in a completely fitted state by a first locking holding portion and a second locking holding portion, and an ensuring member. A locking holder includes a locking release operation portion, a cantilever locking arm portion, and a fulcrum portion. A release operation force receiving portion is provided to the ensuring member, and is disposed at such a position that the release operation force receiving portion is not in contact with the fulcrum portion when the locking release operation portion is operated by being pushed while the ensuring member is at the main locking position, and the release operation force receiving portion is in contact with the fulcrum portion when the locking release operation portion is operated by being pushed while the ensuring member is at the temporary locking position.
    Type: Application
    Filed: November 1, 2019
    Publication date: May 14, 2020
    Inventors: Yasuhiro Tanaka, Noboru Hayasaka, Shotaro Shibata
  • Publication number: 20200144769
    Abstract: A holding structure configured to hold connectors in a completely fitted state with a first lock holding portion and a second lock holding portion, and a secure member configured to secure the completely fitted state are provided. A lock holding body provided with the first lock holding portion includes a pressed movement portion configured to receive cancel force in a separation direction and move the first lock holding portion relative to the second lock holding portion in the separation direction. The secure member includes an operation portion configured to receive lock cancel operation when a lockable state of the first lock holding portion and the second lock holding portion is to be canceled.
    Type: Application
    Filed: November 1, 2019
    Publication date: May 7, 2020
    Inventors: Yasuhiro Tanaka, Noboru Hayasaka, Shotaro Shibata
  • Publication number: 20200136307
    Abstract: In a fitting connector, a latch hold body includes a first fulcrum portion provided on a latch-release arm portion and exerting force in a detaching direction from a second latch hold portion on a first latch hold portion with a contact point with a first release-operation force receiving portion as a fulcrum when a latch-release operation portion is pushed, and a second fulcrum portion provided on the latch-release operation portion side relative to the first fulcrum portion in the latch-release arm portion and exerting the force in the detaching direction from the second latch hold portion on the first latch hold portion with a contact point with a second release-operation force receiving portion that contacted along with continuation of push operation as a new fulcrum.
    Type: Application
    Filed: September 30, 2019
    Publication date: April 30, 2020
    Inventors: Yasuhiro Tanaka, Noboru Hayasaka, Shotaro Shibata
  • Publication number: 20200076116
    Abstract: A shielded connector includes a shielding shell, a connector housing, and an annular sealing member. The shielding shell has a tube portion and a flange portion formed at an end of the tube portion. The flange portion is fastened to a wall portion having a hole of a target object to which the shielded connector is fastened. The connector housing is covered with the tube portion and has an end portion projecting in an axial direction beyond the flange portion and inserted in the hole. The sealing member is sandwiched between the flange portion and the wall portion. The sealing member closely contacts with the wall portion by being compressed toward the wall portion and closely contacts with an outer surface of the connector housing by being compressed toward the outer surface.
    Type: Application
    Filed: August 26, 2019
    Publication date: March 5, 2020
    Inventors: Yasuhiro Tanaka, Noboru Hayasaka, Shotaro Shibata
  • Publication number: 20200048373
    Abstract: A method for producing an additive for a rubber composition, including the step of preparing modified cellulose fibers including introducing one or more compounds selected from unsaturated group-containing alkylene oxide compounds and unsaturated group-containing glycidyl ether compounds to cellulose-based raw materials in the presence of a base, via an ether bonding, and thereafter carrying out a finely fibrillating treatment, wherein the modified cellulose fibers are cellulose fibers bound to one or more substituents, via an ether bonding, selected from substituents represented by the following general formula (1) and substituents represented by the following general formula (2): —CH2—CH(OH)—R1 (1); and —CH2—CH(OH)—CH2—(OA)n—O—R1 (2), wherein the modified cellulose fibers have cellulose I crystal structure.
    Type: Application
    Filed: March 6, 2018
    Publication date: February 13, 2020
    Applicant: KAO CORPORATION
    Inventors: Shotaro Shibata, Yutaka Yoshida, Hisaho Kawahara, Yoshiaki Kumamoto
  • Publication number: 20190185587
    Abstract: Modified cellulose fibers having an average fiber size of 5 ?m or more, wherein one or more substituents selected from substituents represented by the following general formulas (1) and (2): —CH2—CH(OH)—R1 (1); —CH2—CH(OH)—CH2—(OA)n-O—R1 (2); wherein each R1 in the general formulas (1) and (2) is independently a linear or branched alkyl group having 3 or more carbon atoms and 30 or less carbon atoms; n in the general formula (2) is a number of 0 or more and 50 or less; and A is a linear or branched, divalent saturated hydrocarbon group having 1 or more carbon atoms and 6 or less carbon atoms, are bonded to cellulose fibers via an ether bond, wherein the modified cellulose fibers have a cellulose I crystal structure.
    Type: Application
    Filed: September 5, 2016
    Publication date: June 20, 2019
    Applicant: KAO CORPORATION
    Inventors: Yutaka YOSHIDA, Shotaro SHIBATA, Yoshiaki KUMAMOTO
  • Publication number: 20190169314
    Abstract: Modified cellulose fibers, wherein each of (A) one or more substituents selected from substituents represented by the following general formula (1) and substituents represented by the following general formula (2): —CH2—CH(OH)—R1 (1); —CH2—CH(OH)—CH2—(OA)n-O—R1 (2), wherein each R1 in the general formula (1) and the general formula (2) is independently a linear or branched alkyl group having 3 or more carbon atoms and 30 or less carbon atoms; n in the general formula (2) is a number of 0 or more and 50 or less; and A is a linear or branched, divalent saturated hydrocarbon group having 1 or more carbon atoms and 6 or less carbon atoms, and (B) a substituent represented by the following general formula (3): —CH2—CH(OH)—R2 (3), wherein R2 in the general formula (3) is an alkyl group having 1 or more carbon atoms and 2 or less carbon atoms, is independently bonded to cellulose fibers via an ether bond, wherein the modified cellulose fibers have a cellulose I crystal structure.
    Type: Application
    Filed: September 5, 2016
    Publication date: June 6, 2019
    Applicant: KAO CORPORATION
    Inventors: Yutaka YOSHIDA, Shotaro SHIBATA, Yoshiaki KUMAMOTO, Takuma TSUBOI, Motoi KONISHI
  • Publication number: 20190023859
    Abstract: A resin composition containing: (A) one or more resins selected from the group consisting of a thermoplastic resin, and a curable resin selected from an epoxy resin, a (meth)acrylic resin, a phenolic resin, an unsaturated polyester resin, a polyurethane resin, or a polyimide resin; and (B) modified cellulose fibers wherein one or more substituents selected from substituents represented by the following general formulas (1) and (2): —CH2—CH(OH)—R1 (1), —CH2—CH(OH)—CH2—(OA)n-O—R1 (2), wherein each R1 in the general formulas (1) and (2) is independently a linear or branched alkyl group having 3 or more carbon atoms and 30 or less carbon atoms; n in the general formula (2) is a number of 0 or more and 50 or less; and A is a linear or branched, divalent saturated hydrocarbon group having 1 or more carbon atoms and 6 or less carbon atoms are bonded to cellulose fibers via an ether bond, wherein the modified cellulose fibers have a cellulose I crystal structure.
    Type: Application
    Filed: September 5, 2016
    Publication date: January 24, 2019
    Applicant: KAO CORPORATION
    Inventors: Yutaka YOSHIDA, Shotaro SHIBATA, Yoshiaki KUMAMOTO
  • Publication number: 20190010253
    Abstract: Modified cellulose fibers having an average fiber size of 1 nm or more and 500 nm or less, wherein one or more substituents selected from substituents represented by the following general formulas (1) and (2): —CH2—CH(OH)—R1 (1); —CH2—CH(OH)—CH2—(OA)n-O—R1 (2); wherein each R1 in the general formulas (1) and (2) is independently a linear or branched alkyl group having 3 or more carbon atoms and 30 or less carbon atoms; n in the general formula (2) is a number of 0 or more and 50 or less; and A is a linear or branched, divalent saturated hydrocarbon group having 1 or more carbon atoms and 6 or less carbon atoms, are bonded to cellulose fibers via an ether bond, wherein a viscosity at 25° C. of a dispersion having a concentration of 0.2% by mass, obtained by a finely dispersing treatment in any one of DMF, MEK, and toluene is 15 mPa·s or more, and wherein the modified cellulose fibers have a cellulose I crystal structure.
    Type: Application
    Filed: September 5, 2016
    Publication date: January 10, 2019
    Applicant: KAO CORPORATION
    Inventors: Yutaka YOSHIDA, Shotaro SHIBATA, Yoshiaki KUMAMOTO
  • Publication number: 20180244806
    Abstract: A rubber composition containing a rubber and modified cellulose fibers, wherein one or more substituents selected from substituents represented by the following general formulas (1) and (2): —CH2—CH(OH)—R1 (1), —CH2—CH(OH)—CH2—(OA)n—O—R1 (2), wherein each R1 in the general formulas (1) and (2) is independently a linear or branched alkyl group having 3 or more carbon atoms and 30 or less carbon atoms; n in the general formula (2) is a number of 0 or more and 50 or less; and A is a linear or branched, divalent saturated hydrocarbon group having 1 or more carbon atoms and 6 or less carbon atoms are bonded to cellulose fibers via an ether bond, wherein the modified cellulose fibers have a cellulose I crystal structure. The rubber composition of the present invention can be suitably used for machine tool parts, household electric appliance parts, automobile parts, and the like.
    Type: Application
    Filed: September 5, 2016
    Publication date: August 30, 2018
    Applicant: KAO CORPORATION
    Inventors: Yutaka YOSHIDA, Takuma TSUBOI, Shotaro SHIBATA, Yoshiaki KUMAMOTO, Motoi KONISHI
  • Patent number: 4009484
    Abstract: A semiconductor device comprising monocrystalline semiconductor regions and a polycrystalline semiconductor region doped with gold and disposed between and adjacent to the monocrystalline regions. The high impedance appearing between the regions is utilized for isolating circuit elements which are formed in the monocrystalline regions.
    Type: Grant
    Filed: December 3, 1969
    Date of Patent: February 22, 1977
    Assignee: Hitachi, Ltd.
    Inventors: Katumi Ogiue, Masaya Ohta, Shotaro Shibata