Patents by Inventor Keiji Takagi

Keiji Takagi 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: 12070916
    Abstract: A mixing device for mixing a puncture repair liquid and compressed air includes a mixing chamber, a first inlet for supplying the compressed air to the mixing chamber, a second inlet for supplying the puncture repair liquid to the mixing chamber, and an outlet for discharging a mixture of the puncture repair liquid and the compressed air from the mixing chamber. The mixing chamber includes a deposition section for depositing agglomerates contained in the puncture repair liquid. The deposition section is provided between the second inlet and the outlet.
    Type: Grant
    Filed: March 16, 2023
    Date of Patent: August 27, 2024
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Keiji Takagi
  • Publication number: 20240279100
    Abstract: A life of a heating element is extended. A furnace (11) in accordance with the present invention includes: a heating element (21) that generates heat in response to conduction of electricity; and a supply and exhaust system (30) that adjusts an atmosphere inside the furnace (11).
    Type: Application
    Filed: June 16, 2022
    Publication date: August 22, 2024
    Inventors: Daisuke MOMO, Keiji TAKAGI
  • Patent number: 12064997
    Abstract: A tread of a tire includes a plurality of blocks including a center block located on an equator plane and a side block located outward of the center block in an axial direction. Each of the plurality of blocks includes a land surface that forms a part of a tread surface. In the tread surface, a total area of the land surfaces is smaller than a total area of a portion other than the land surfaces. A complex elastic modulus at a maximum strain amplitude of 1% and a temperature of 70° C. of each block is not less than 10.0 MPa. A 300% modulus at a temperature of 75° C. of each block is not greater than 6.0 MPa.
    Type: Grant
    Filed: May 11, 2021
    Date of Patent: August 20, 2024
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Yoshihisa Noguchi, Keiji Takagi
  • Publication number: 20230321931
    Abstract: A mixing device for mixing a puncture repair liquid and compressed air includes a mixing chamber, a first inlet for supplying the compressed air to the mixing chamber, a second inlet for supplying the puncture repair liquid to the mixing chamber, and an outlet for discharging a mixture of the puncture repair liquid and the compressed air from the mixing chamber. The mixing chamber includes a deposition section for depositing agglomerates contained in the puncture repair liquid. The deposition section is provided between the second inlet and the outlet.
    Type: Application
    Filed: March 16, 2023
    Publication date: October 12, 2023
    Applicant: Sumitomo Rubber Industries, Ltd.
    Inventor: Keiji TAKAGI
  • Publication number: 20230321932
    Abstract: A mixing device for mixing a puncture repair liquid and compressed air includes a mixing chamber, a first inlet for supplying the compressed air in a first flow direction to the mixing chamber, a second inlet for supplying the puncture repair liquid to the mixing chamber, and an outlet for discharging a mixture of the puncture repair liquid and the compressed air from the mixing chamber. The outlet discharges the mixture in a second flow direction at a position displaced from a virtual line extending from the first inlet in the first flow direction.
    Type: Application
    Filed: March 16, 2023
    Publication date: October 12, 2023
    Applicant: Sumitomo Rubber Industries, Ltd.
    Inventors: Keiji TAKAGI, Takashi MAKI, Kazuhiro TATSUMI
  • Patent number: 11732116
    Abstract: According to the rubber composition for a tire tread comprising a diene-based rubber component, and, based on 100 parts by mass of the diene-based rubber component, 0.5 to 6.0 parts by mass of a branched alkane of 40 to 70 carbon atoms, 0.05 to 3.5 parts by mass of a linear alkane of 45 or more carbon atoms and 1 to 35 parts by mass of aluminum hydroxide, and a tire comprising tread composed of the rubber composition for a tire tread of the present invention, a rubber composition for a tire tread capable of improving initial wet grip performance can be provided, thereby providing a tire having such improved initial wet grip performance.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: August 22, 2023
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Keiji Takagi, Tatsuya Miyazaki
  • Publication number: 20210354516
    Abstract: A tread of a tire includes a plurality of blocks including a center block located on an equator plane and a side block located outward of the center block in an axial direction. Each of the plurality of blocks includes a land surface that forms a part of a tread surface. In the tread surface, a total area of the land surfaces is smaller than a total area of a portion other than the land surfaces. A complex elastic modulus at a maximum strain amplitude of 1% and a temperature of 70° C. of each block is not less than 10.0 MPa. A 300% modulus at a temperature of 75° C. of each block is not greater than 6.0 MPa.
    Type: Application
    Filed: May 11, 2021
    Publication date: November 18, 2021
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Yoshihisa NOGUCHI, Keiji TAKAGI
  • Publication number: 20210277212
    Abstract: According to the rubber composition for a tire tread comprising a diene-based rubber component, and, based on 100 parts by mass of the diene-based rubber component, 0.5 to 6.0 parts by mass of a branched alkane of 40 to 70 carbon atoms, 0.05 to 3.5 parts by mass of a linear alkane of 45 or more carbon atoms and 1 to 35 parts by mass of aluminum hydroxide, and a tire comprising tread composed of the rubber composition for a tire tread of the present invention, a rubber composition for a tire tread capable of improving initial wet grip performance can be provided, thereby providing a tire having such improved initial wet grip performance.
    Type: Application
    Filed: August 6, 2019
    Publication date: September 9, 2021
    Applicant: Sumitomo Rubber Industries, Ltd.
    Inventors: Keiji TAKAGI, Tatsuya MIYAZAKI
  • Publication number: 20210129599
    Abstract: A pneumatic tyre 1 includes a carcass 6 extending between bead cores of bead portions via a tread portion 2 and sidewall portions, and a belt layer 7 arranged on an outer side in a tyre radial direction of the carcass 6 and inside of the tread portion 2. The pneumatic tyre 1 has a damping rubber body 30 arranged between the carcass 6 and the belt layer 7, and a noise damper 20 arranged on an inner cavity surface of the tread portion 2. A width W1 in a tyre axial direction of the damping rubber body 30 is in a range of from 60% to 130% of a width W2 in the tyre axial direction of the belt layer 7, and air permeability of the noise damper 20 measured in accordance with the Japanese Industrial Standard JIS-L1096 is 3.0 cm3/cm2/s or less.
    Type: Application
    Filed: January 29, 2018
    Publication date: May 6, 2021
    Applicant: Sumitomo Rubber Industries, Ltd.
    Inventors: Masako NAKATANI, Takahiro KAWACHI, Ayuko YAMADA, Noboru OKABE, Keiji TAKAGI, Natsuki MAEKAWA, Kenji HAMAMURA, Subaru TOYA
  • Patent number: 10781036
    Abstract: A glass roll includes a glass film formed by a downdraw method. The glass film is wound into a roll using a winding roller in a state in which front and back glass surfaces of the glass film formed in the forming operation are exposed, and during the winding operation, the glass film is superposed on a separable protective sheet. The protective sheet extends beyond both sides in a width direction of the glass film. The protective sheet can further be wound on an outer peripheral surface of the glass film by winding only the protective sheet from a trailing end of the glass film in a winding direction of the glass film.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: September 22, 2020
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Masahiro Tomamoto, Michiharu Eta, Hidetaka Oda, Tatsuya Takaya, Yasuo Yamazaki, Hiroshi Takimoto, Shinichi Ishibashi, Keiji Takagi, Daisuke Nagata, Takahide Nakamura, Toru Sakurabayashi, Katsutoshi Fujiwara, Mitsuharu Noda, Yasuhiko Ogiso, Takahide Fujii
  • Publication number: 20200164700
    Abstract: To be capable of preventing deterioration of uniformity after puncture repair while suppressing running noise. [Solution] A pneumatic tire 1 comprises a noise damper 20 fixed to a tire inner cavity surface of a tread portion 2 and formed of a porous material. The noise damper 20 includes a first part 23 arranged on an outer side in a tire radial direction and fixed to the tire inner cavity surface 16, and a second part 24 arranged on an inner side in the tire radial direction of the first part 23 and exposed in a tire inner cavity 17. A water absorption rate of the first part 23 calculated by a following formula (1) is in a range of from 5% to 25%. Air permeability of the second part 24 measured in accordance with Japanese Industrial standard JIS-L1096 is in a range of from 1 to 7 cm3/cm2/s. The formula (1) is: water absorption rate (%)=weight change before and after immersion (g)/volume at 50% compression (cm3)×100 (1).
    Type: Application
    Filed: December 6, 2017
    Publication date: May 28, 2020
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Masako NAKATANI, Takahiro KAWACHI, Nanaho KAMI, Ayuko YAMADA, Takuya HORIGUCHI, Tatsuhiro TANAKA, Keiji TAKAGI, Subaru TOYA
  • Patent number: 10647168
    Abstract: To be capable of preventing deterioration of uniformity after puncture repair while suppressing running noise. [Solution] A pneumatic tire 1 comprises a noise damper 20 fixed to a tire inner cavity surface of a tread portion 2 and formed of a porous material. The noise damper 20 includes a first part 23 arranged on an outer side in a tire radial direction and fixed to the tire inner cavity surface 16, and a second part 24 arranged on an inner side in the tire radial direction of the first part 23 and exposed in a tire inner cavity 17. A water absorption rate of the first part 23 calculated by a following formula (1) is in a range of from 5% to 25%. Air permeability of the second part 24 measured in accordance with Japanese Industrial Standard JIS-L1096 is in a range of from 1 to 7 cm3/cm2/s. The formula (1) is: water absorption rate (%)=weight change before and after immersion (g)/volume at 50% compression (cm3)×100 ??(1).
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: May 12, 2020
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Masako Nakatani, Takahiro Kawachi, Nanaho Kami, Ayuko Yamada, Takuya Horiguchi, Tatsuhiro Tanaka, Keiji Takagi, Subaru Toya
  • Patent number: 10590395
    Abstract: Provided is a mutant protein obtained by mutating a specific amino acid residue of HMGR, a rate-limiting enzyme of isoprene monomer biosynthesis in the polyisoprenoid biosynthesis pathway. The present invention relates to a mutant protein, wherein at least one amino acid residue selected from the group consisting of amino acid residues at positions 91, 225, 257, 287, 339, 411, 470, 509 and 574 of the Arabidopsis thaliana 3-hydroxy-3-methylglutaryl CoA reductase shown by SEQ ID NO:1 and amino acid residues at positions corresponding to the foregoing in 3-hydroxy-3-methylglutaryl CoA reductase is deleted or replaced with another amino acid residue.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: March 17, 2020
    Assignees: OSAKA UNIVERSITY, SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Keiko Suzuki, Jekson Robertlee, Toshiya Muranaka, Keiji Takagi, Yukino Inoue, Kazuhisa Fushihara
  • Patent number: 10272725
    Abstract: Performance on snowy roads is improved. Provided is a pneumatic tire, of which the mounting orientation on a vehicle is indicated. An outer middle land part is formed between a first major groove and a second major groove. The first major groove has first portions and second portions alternately formed in the tire circumferential direction, the second portions being wider than the first portions. The outer middle land part is provided with a plurality of middle inclined grooves not directly interconnected with either the first major groove or the second major groove, a plurality of outer middle lug grooves connecting the second portions of the first major groove and the middle inclined grooves, and inner middle lug grooves connecting the middle inclined grooves and the second major groove. The outer middle lug grooves are provided to different positions in the tire circumferential direction than the inner middle lug grooves.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: April 30, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Keiji Takagi, Yoshiaki Kanematsu, Hiroshi Yamaoka
  • Publication number: 20180223085
    Abstract: The present invention is to provide a rubber composition for vulcanizing bladder excellent in thermal conductivity and a vulcanizing bladder formed of the rubber composition, with which vulcanization efficiency can be improved. The rubber composition for vulcanizing bladder comprises, based on 100 parts by mass of a rubber component comprising 80% by mass or more of a butyl rubber, 20 to 200 parts by mass of at least one type of metal filler selected from the group consisting of metal powder, metal oxide powder, metal hydroxide powder and metal nitride powder, said metal filler having a Mohs hardness of 8 or lower and a mean particle size of 0.3 to 50 ?m, and 20 to 80 parts by mass of a carbon black. The vulcanizing bladder is formed of the rubber composition for vulcanizing bladder.
    Type: Application
    Filed: August 22, 2016
    Publication date: August 9, 2018
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Keiji TAKAGI, Tatsuya MIYAZAKI
  • Patent number: 9931816
    Abstract: A glass roll reliably prevents a glass film from breaking from an end surface of the glass film as an origin of breakage. The glass roll is formed by winding the glass film into a roll while superposing the glass film on a protective sheet. The glass film is formed by an overflow downdraw method to have a thickness of 1 ?m or more and 200 ?m or less, and has each end surface in a width direction formed as a cut surface cut by laser splitting.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: April 3, 2018
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Masahiro Tomamoto, Michiharu Eta, Hidetaka Oda, Tatsuya Takaya, Yasuo Yamazaki, Hiroshi Takimoto, Shinichi Ishibashi, Keiji Takagi, Daisuke Nagata, Takahide Nakamura, Toru Sakurabayashi, Katsutoshi Fujiwara, Mitsuharu Noda, Yasuhiko Ogiso, Takahide Fujii
  • Patent number: 9719110
    Abstract: The present invention provides a method of increasing production of amorpha-4,11-diene and a method of increasing production of natural rubber. The present invention relates to a method of increasing production of amorpha-4,11-diene which includes the step of attaching an enzyme inhibitor to Arabidopsis thaliana into which has been introduced a gene encoding amorphadiene synthase. The enzyme inhibitor inhibits at least one enzyme other than amorphadiene synthase, that catalyzes an enzymatic reaction in which farnesyl diphosphate acts as a substrate. The present invention also relates to a method of increasing production of natural rubber which includes the step of attaching an enzyme inhibitor to a rubber-producing plant. The enzyme inhibitor inhibits at least one enzyme other than enzymes involved in natural rubber synthesis, that catalyzes an enzymatic reaction in which farnesyl diphosphate acts as a substrate.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: August 1, 2017
    Assignees: SUMITOMO RUBBER INDUSTRIES, LTD., OSAKA UNIVERSITY
    Inventors: Haruhiko Yamaguchi, Yukino Inoue, Keiji Takagi, Kazuhisa Fushihara, Toshiya Muranaka, Keiko Suzuki, Kanako Kobayashi
  • Publication number: 20170204377
    Abstract: Provided is a mutant protein obtained by mutating a specific amino acid residue of HMGR, a rate-limiting enzyme of isoprene monomer biosynthesis in the polyisoprenoid biosynthesis pathway. The present invention relates to a mutant protein, wherein at least one amino acid residue selected from the group consisting of amino acid residues at positions 91, 225, 257, 287, 339, 411, 470, 509 and 574 of the Arabidopsis thaliana 3-hydroxy-3-methylglutaryl CoA reductase shown by SEQ ID NO:1 and amino acid residues at positions corresponding to the foregoing in 3-hydroxy-3-methylglutaryl CoA reductase is deleted or replaced with another amino acid residue.
    Type: Application
    Filed: May 22, 2015
    Publication date: July 20, 2017
    Applicants: OSAKA UNIVERSITY, SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Keiko SUZUKI, Jekson ROBERTLEE, Toshiya MURANAKA, Keiji TAKAGI, Yukino INOUE, Kazuhisa FUSHIHARA
  • Patent number: 9649885
    Abstract: A pneumatic tire includes a tread portion with an unsymmetrical tread pattern that includes a circumferentially extending first main groove at a nearest side of an inboard tread edge, a circumferentially extending second main groove adjacent to the first main groove, and a middle land portion arranged therebetween. The middle land portion is provided with a plurality of inclined grooves, a plurality of inboard middle lateral grooves including one end communicated with the first main groove and the other end communicated with the inclined groove, and a plurality of outboard middle lateral grooves including one end communicated with the second main groove and the other end communicated with the inclined groove. Respective groove center points of the inboard middle lateral grooves are arranged in different places in the circumferential direction of the tire from respective groove center points of the outboard middle lateral grooves.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: May 16, 2017
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Keiji Takagi
  • Publication number: 20160297251
    Abstract: Performance on snowy roads is improved. Provided is a pneumatic tire, of which the mounting orientation on a vehicle is indicated. An outer middle land part is formed between a first major groove and a second major groove. The first major groove has first portions and second portions alternately formed in the tire circumferential direction, the second portions being wider than the first portions. The outer middle land part is provided with a plurality of middle inclined grooves not directly interconnected with either the first major groove or the second major groove, a plurality of outer middle lug grooves connecting the second portions of the first major groove and the middle inclined grooves, and inner middle lug grooves connecting the middle inclined grooves and the second major groove. The outer middle lug grooves are provided to different positions in the tire circumferential direction than the inner middle lug grooves.
    Type: Application
    Filed: November 25, 2014
    Publication date: October 13, 2016
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Keiji TAKAGI, Yoshiaki KANEMATSU, Hiroshi YAMAOKA