Patents by Inventor Takashi Kayahara

Takashi Kayahara 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: 20210178514
    Abstract: A welding method includes: emitting laser beam toward a workpiece including a metal to melt and weld a part of the workpiece, the part being where the laser beam has been emitted to. Further, the laser beam includes a main power region and at least one auxiliary power region, a power of the main power region is larger than a power of each of the at least one auxiliary power region, and a ratio between the power of the main power region and the total of powers of the at least one auxiliary power region is in a range of 144:1 to 1:9.
    Type: Application
    Filed: February 24, 2021
    Publication date: June 17, 2021
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Tomomichi YASUOKA, Takashi KAYAHARA, Ryosuke NISHII, Koji KIRIKAE, Keigo MATSUNAGA, Takashi SHIGEMATSU
  • Publication number: 20210170527
    Abstract: A welding method includes a step of, while irradiating laser beam toward a workpiece, relatively moving the laser beam and the workpiece and, while sweeping the laser beam on the workpiece, melting the workpiece in an irradiated portion to perform welding. Further, the laser beam is configured by a main power region and a sub-power region, at least a part of the sub-power region is present on a sweeping direction side of the main power region, a power density of the main power region is equal to or higher than a power density of the sub-power region, and the power density of the main power region is at least power density that can generate a keyhole.
    Type: Application
    Filed: February 19, 2021
    Publication date: June 10, 2021
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Tomomichi YASUOKA, Takashi KAYAHARA, Toshiaki SAKAI, Ryosuke NISHII, Takashi SHIGEMATSU
  • Publication number: 20210162539
    Abstract: A welding method includes: layering two or more plate materials each including a plating plate material having a preform on a surface of which a plating layer is formed to form a workpiece; disposing the workpiece in a region to be irradiated with a processing laser beam; generating the processing laser beam having a power distribution shape in which two or more power regions are disposed along a predetermined direction in a plane perpendicular to a light traveling direction; irradiating a surface of the workpiece with the processing laser beam; and moving the processing laser beam and the workpiece relatively while performing the irradiation, and melting an irradiated area of the workpiece to perform welding while sweeping the processing laser beam in the predetermined direction on the workpiece during a swing of the processing laser beam.
    Type: Application
    Filed: February 17, 2021
    Publication date: June 3, 2021
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Takashi KAYAHARA, Ryosuke NISHII, Satoshi ASANUMA, Tomomichi YASUOKA, Takashi SHIGEMATSU
  • Publication number: 20210086295
    Abstract: A welding method includes: disposing a workpiece formed by stacking a plurality of metal foils in an area to be irradiated with laser light that contains a plurality of beams; irradiating a surface of the workpiece with the beams of the laser light by dispersing positions of the beams such that centers of the beams do not overlap with each other within a prescribed area on the surface; melting an irradiated part of the workpiece and performing welding; and setting each of the beams to have a power density with which no hole opens in the metal foils, and setting the power density of the beams and dispersing irradiating positions to be emitted so as to form a weld pool penetrating the workpiece by the beams.
    Type: Application
    Filed: December 8, 2020
    Publication date: March 25, 2021
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Ryosuke NISHII, Kousuke KASHIWAGI, Takashi KAYAHARA, Tomomichi YASUOKA, Takashi SHIGEMATSU
  • Publication number: 20210031301
    Abstract: A welding method includes: arranging a workpiece containing copper in a region to be irradiated with laser light; and irradiating the workpiece with the laser light to melt and weld an irradiated portion of the workpiece. Further, the laser light is formed of a main beam and a plurality of sub beams, and a ratio of power of the main beam to total power of the plurality of sub beams is 72:1 to 3:7.
    Type: Application
    Filed: October 9, 2020
    Publication date: February 4, 2021
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Tomomichi YASUOKA, Takashi KAYAHARA, Toshiaki SAKAI, Ryosuke NISHII, Takashi SHIGEMATSU
  • Publication number: 20200384574
    Abstract: A welding method includes: forming a workpiece by stacking plated sheet members having a plating layer formed on a surface of a base material; disposing the workpiece in an area to be irradiated with laser light; irradiating a surface of the workpiece with a plurality of beams by dispersing positions such that centers of the beams do not overlap with each other within a prescribed area on the surface; while continuing the irradiation, relatively moving the beams and the workpiece and sweeping the beams on the workpiece so as to melt an irradiated part of the workpiece for performing welding; and setting a distance between the beams to be emitted such that weld pools formed in the workpiece by irradiation of each of the beams overlap with each other.
    Type: Application
    Filed: August 26, 2020
    Publication date: December 10, 2020
    Applicant: FURUKAWA ELECTRONIC CO, LTD.
    Inventors: Ryosuke NISHII, Takashi KAYAHARA, Toshiaki SAKAI, Tomomichi YASUOKA, Takashi SHIGEMATSU
  • Publication number: 20190389001
    Abstract: A method of welding a workpiece by using a laser is provided which includes disposing a workpiece in a region to be irradiated with laser light from a laser oscillator; and irradiating the workpiece with the laser light from the laser oscillator such that an irradiated portion of the workpiece is melted and welded while sweeping the laser light over the workpiece by relatively moving the laser light and the workpiece. The laser light is formed of a main beam and an auxiliary beam, at least part of the auxiliary beam being disposed anteriorly in a sweep direction, and the main beam has a power density equal to or greater than a power density of the auxiliary beam.
    Type: Application
    Filed: September 3, 2019
    Publication date: December 26, 2019
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Tomomichi YASUOKA, Takashi KAYAHARA, Toshiaki SAKAI, Ryosuke NISHII, Takashi SHIGEMATSU
  • Patent number: 9391376
    Abstract: In a female crimp terminal including a pressure-bonding section for permitting pressure-bonding and connection to an aluminum core wire of an insulated wire, the pressure-bonding section is configured in a hollow sectional shape by a plate material, and a long length direction weld portion in a long length direction is welded, a forward part in the hollow sectional shape is caused to take an almost flat plate-shaped sealing shape and a width direction weld portion in a width direction is welded.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: July 12, 2016
    Assignees: Furukawa Electric Co., Ltd., Furukawa Automotive Systems, Inc.
    Inventors: Yukihiro Kawamura, Satoshi Takamura, Takashi Tonoike, Yasushi Kihara, Saburo Yagi, Takashi Shigematsu, Kengo Mitose, Takashi Kayahara
  • Publication number: 20150126078
    Abstract: In a female crimp terminal including a pressure-bonding section for permitting pressure-bonding and connection to an aluminum core wire of an insulated wire, the pressure-bonding section is configured in a hollow sectional shape by a plate material, and a long length direction weld portion in a long length direction is welded, a forward part in the hollow sectional shape is caused to take an almost flat plate-shaped sealing shape and a width direction weld portion in a width direction is welded.
    Type: Application
    Filed: January 5, 2015
    Publication date: May 7, 2015
    Applicants: Furukawa Electric Co., Ltd., Furukawa Automotive Systems, Inc.
    Inventors: Yukihiro KAWAMURA, Satoshi TAKAMURA, Takashi TONOIKE, Yasushi KIHARA, Saburo YAGI, Takashi SHIGEMATSU, Kengo MITOSE, Takashi KAYAHARA
  • Patent number: 7396844
    Abstract: Benzamidine derivatives of the following formulae or analogs thereof, i.e., pharmaceutically acceptable salts thereof, are provided.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: July 8, 2008
    Assignee: Ajinomoto Co., Inc.
    Inventors: Masaru Takayanagi, Kazuyuki Sagi, Tadakiyo Nakagawa, Masahiro Yamanashi, Takashi Kayahara, Shunji Takehana, Yumiko Fukuda, Mitsuo Takahashi, Masataka Shoji
  • Patent number: 7270972
    Abstract: It is provided a method for producing a subunit peptide originating from an oligomeric protein having disulfide bonds within a subunit and between subunits. The method comprises producing a subunit originating from an oligomeric protein having disulfide bonds within a subunit and between subunits by the following steps: (a) a step of refolding the subunit by denaturing the oligomeric protein or its subunit in a solution with a protein-denaturing agent and removing the denaturing agent from the solution in the presence of polyoxyalkyl polyether having a functional group that reacts with a thiol group; and (b) a step of isolating the subunit bonded to the polyoxyalkyl polyether from the solution.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: September 18, 2007
    Assignee: Ajinomoto Co., Inc.
    Inventors: Naoyuki Fukuchi, Shunsuke Kageyama, Morikazu Kito, Takashi Kayahara, Hiroshi Yamamoto
  • Patent number: 7084113
    Abstract: A method for producing a protein having an antithrombotic activity, which comprises replacing, in a protein that has an amino acid sequence having a homology of not less than 30% to the amino acid sequence of SEQ ID NO: 1 and forms a higher order structure composed of a first ? strand (?1), a first a helix (?1), a second ? helix (?2), a second ? strand (?2), a loop, a third ? strand (?3), a fourth ? strand (?4) and a fifth ? strand (?5) in this order from the amino terminus, at least one amino acid residue in a region from ?2 to ?2 and/or a region from ?3 to ?4 so that electric charge of the amino acid residue is changed towards positive direction.
    Type: Grant
    Filed: January 2, 2004
    Date of Patent: August 1, 2006
    Assignee: Ajinomoto Co., Inc.
    Inventors: Naoyuki Fukuchi, Morikazu Kito, Takashi Kayahara, Fumie Futaki, Kohki Ishikawa, Eiichiro Suzuki, Keiko Gondoh, Nobuhisa Shimba, Naoyuki Yamada
  • Patent number: 6825191
    Abstract: The present invention provides benzodiazepine derivatives of the following formula, analogs thereof and pharmaceutically acceptable salts thereof. The compounds of the present invention have an excellent effect of inhibiting activated blood-coagulation factor X. These compounds are usable as agents for treating various diseases concerned with the activated blood-coagulation factor X.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: November 30, 2004
    Assignee: Ajinomoto Co., Inc.
    Inventors: Tadakiyo Nakagawa, Munetaka Tokumasu, Kazumi Tashiro, Mitsuo Takahashi, Takashi Kayahara, Shunji Takehana, Yuki Kajigaya, Kaoru Yoshida, Kuniya Sakurai
  • Patent number: 6825181
    Abstract: Aminoisoquinoline derivatives of the following formulae or analogs thereof and pharmaceutically acceptable salts thereof are provided. These compounds have an excellent effect of inhibiting activated blood-coagulation factor X, and they are useful as anticoagulants or agents for preventing or treating thrombi or emboli.
    Type: Grant
    Filed: September 19, 2000
    Date of Patent: November 30, 2004
    Assignee: Ajinomoto Co., Inc.
    Inventors: Tadakiyo Nakagawa, Shingo Makino, Kazuyuki Sagi, Masaru Takayanagi, Takashi Kayahara, Shunji Takehana
  • Patent number: 6812231
    Abstract: Benzamidine derivatives of the following formula, analogs thereof and pharmaceutically acceptable salts thereof are provided. These compounds have an effect of inhibiting activated blood-coagulation factor X, and they are useful as agents for preventing or treating various diseases caused by thrombi or emboli.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: November 2, 2004
    Assignee: Ajinomoto Co., Inc.
    Inventors: Tadakiyo Nakagawa, Kazuyuki Sagi, Kaoru Yoshida, Yumiko Fukuda, Masataka Shoji, Shunji Takehana, Takashi Kayahara, Akira Takahara
  • Patent number: 6784191
    Abstract: A benzamidine derivative of the following formula, analogs thereof and pharmaceutically acceptable salts thereof have an effect of inhibiting the blood coagulation based on their excellent effect of inhibiting activated blood-coagulation factor X. Thus, a blood-coagulation inhibitor or an agent for preventing or treating thrombosis or embolism, containing one of those compounds as the active ingredient, is provided.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: August 31, 2004
    Assignee: Ajinomoto Co., Inc.
    Inventors: Kaoru Yoshida, Tadakiyo Nakagawa, Takashi Kayahara
  • Publication number: 20040161822
    Abstract: A method for producing a protein having an antithrombotic activity, which comprises replacing, in a protein that has an amino acid sequence having a homology of not.less than 30% to the amino acid sequence of SEQ ID NO: 1 and forms a higher order structure composed of a first &bgr; strand (&bgr;1), a first a helix (&agr;1), a second &agr; helix (&agr;2), a second &bgr; strand (&bgr;2), a loop, a third &bgr; strand (&bgr;3), a fourth &bgr; strand (&bgr;4) and a fifth &bgr; strand (&bgr;5) in this order from the amino terminus, at least one amino acid residue in a region from &agr;2 to &bgr;2 and/or a region from &bgr;3 to &bgr;4 so that electric charge of the amino acid residue is changed towards positive direction.
    Type: Application
    Filed: January 2, 2004
    Publication date: August 19, 2004
    Applicant: AJINOMOTO CO., INC.
    Inventors: Naoyuki Fukuchi, Morikazu Kito, Takashi Kayahara, Fumie Futaki, Kohki Ishikawa, Eiichiro Suzuki, Keiko Gondoh, Nobuhisa Shimba, Naoyuki Yamada
  • Patent number: 6710056
    Abstract: An amidinophenylpyruvic acid derivative of the following formula, analogs thereof and pharmaceutically acceptable salts thereof have an excellent antagonistic effect against activated blood coagulation factor VII.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: March 23, 2004
    Assignee: Ajinomoto Co., Inc.
    Inventors: Masayuki Sugiki, Kazuyuki Sagi, Kohichi Fujita, Takashi Kayahara, Shunji Takehana, Kuniya Sakurai, Kazumi Tashiro
  • Patent number: 6710031
    Abstract: A method for producing a protein having an antithrombotic activity, which comprises replacing, in a protein that has an amino acid sequence having a homology of not less than 30% to the amino acid sequence of SEQ ID NO: 1 and forms a higher order structure composed of a first &bgr; strand (&bgr;1), a first &agr; helix (&agr;1), a second &agr; helix (&agr;2), a second &bgr; strand (&bgr;2), a loop, a third &bgr; strand (&bgr;3), a fourth &bgr; strand (&bgr;4) and a fifth &bgr; strand (&bgr;5) in this order from the amino terminus, at least one amino acid residue in a region from &agr;2 to &bgr;2 and/or a region from &bgr;3 to &bgr;4 so that electric charge of the amino acid residue is changed towards positive direction.
    Type: Grant
    Filed: October 4, 2001
    Date of Patent: March 23, 2004
    Assignee: Ajinomoto Co., Inc.
    Inventors: Naoyuki Fukuchi, Morikazu Kito, Takashi Kayahara, Fumie Futaki, Kohki Ishikawa, Eiichiro Suzuki, Keiko Gondoh, Nobuhisa Shimba, Naoyuki Yamada
  • Publication number: 20030186969
    Abstract: The present invention provides benzodiazepine derivatives of the following formula, analogs thereof and pharmaceutically acceptable salts thereof. The compounds of the present invention have an excellent effect of inhibiting activated blood-coagulation factor X. These compounds are usable as agents for treating various diseases concerned with the activated blood-coagulation factor X.
    Type: Application
    Filed: March 27, 2003
    Publication date: October 2, 2003
    Applicant: AJINOMOTO CO. INC
    Inventors: Tadakiyo Nakagawa, Munetaka Tokumasu, Kazumi Tashiro, Mitsuo Takahashi, Takashi Kayahara, Shunji Takehana, Yuki Kajigaya, Kaoru Yoshida, Kuniya Sakurai