Patents by Inventor Katsuya Takahashi

Katsuya Takahashi 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: 11066269
    Abstract: A sheet folding processing apparatus suppresses an increase in size and cost of the apparatus and performs folding processing on continuously conveyed sheets. In the sheet folding processing apparatus, a sheet conveyed by a feeding roller pair and hang in a loop shape in a loop forming space is pushed into a nipping portion of a folding roller pair by a pushing plate, so that the sheet is folded in a Z-shape to form a plurality of fold lines. The sheet is conveyed in the conveyance direction until the sheet rear end passes through the feeding roller pair, and after the sheet rear end is stored in a loop forming space by moving the pushing plate from a position for pushing the sheet into a nipping portion to a retracting position, the reinforcing processing of the fold line of the sheet is performed by an additional folding unit.
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: July 20, 2021
    Assignee: CANON FINETECH NISCA INC.
    Inventor: Katsuya Takahashi
  • Patent number: 10919840
    Abstract: The invention provides a diamine crosslinking agent for acidic polysaccharides consisting of a diamine compound having a primary amino group at both terminals and an ester or thioester bond in the molecule, wherein the number of atom in the linear chain between at least one of the amino groups and the carbonyl carbon in the ester or thioester is 1 to 5; in particular, a diamine crosslinking agent for acidic polysaccharides which is represented by the general formula (I) below: [the symbols in the formula are as described in the specification]; a crosslinked acidic polysaccharide obtained by forming crosslinks by amide bonding between the amino groups in the diamine crosslinking agent and carboxyl groups in an acidic polysaccharide; and a medical material including the crosslinked product.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: February 16, 2021
    Assignee: SEIKAGAKU CORPORATION
    Inventors: Sho Funayama, Yosuke Yasuda, Akihiro Takezawa, Katsuya Takahashi
  • Publication number: 20200324995
    Abstract: A sheet folding processing apparatus suppresses an increase in size and cost of the apparatus and performs folding processing on continuously conveyed sheets. In the sheet folding processing apparatus, a sheet conveyed by a feeding roller pair and hang in a loop shape in a loop forming space is pushed into a nipping portion of a folding roller pair by a pushing plate, so that the sheet is folded in a Z-shape to form a plurality of fold lines. The sheet is conveyed in the conveyance direction until the sheet rear end passes through the feeding roller pair, and after the sheet rear end is stored in a loop forming space by moving the pushing plate from a position for pushing the sheet into a nipping portion to a retracting position, the reinforcing processing of the fold line of the sheet is performed by an additional folding unit.
    Type: Application
    Filed: April 8, 2020
    Publication date: October 15, 2020
    Applicant: CANON FINETECH NISCA INC.
    Inventor: Katsuya TAKAHASHI
  • Patent number: 10612584
    Abstract: A fluid dynamic bearing device includes a shaft disposed along a center axis, a sleeve cylindrically extending around the shaft, a thruster that closes a lower end of the sleeve, dynamic pressure grooves in the shaft or the sleeve, and a lubricating oil present therebetween. The shaft includes a shaft main body and a shaft flange extending radially outward from a lower end of the shaft main body. An inner peripheral surface of the sleeve includes a first inner peripheral surface that faces an outer peripheral surface of the shaft main body in the radial direction and a second inner peripheral surface that faces an outer peripheral surface of the shaft flange in the radial direction. The sleeve includes a sleeve inner lower surface and a circulation hole.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: April 7, 2020
    Assignee: NIDEC CORPORATION
    Inventors: Kazuhiro Sato, Katsuya Takahashi
  • Patent number: 10566865
    Abstract: A protrusion includes a leading end to which a yoke is fixed and a connector that connects an axially lower end of a flange and the leading end. A minimum width of the connector in a direction intersecting a direction in which the protrusion protrudes is smaller than a maximum width of the leading end in a radial direction. A radial position at a radially inner end of the leading end is located radially outward with respect to a side surface in a radially inward direction of a magnet.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: February 18, 2020
    Assignee: NIDEC CORPORATION
    Inventors: Takuo Miyake, Kazuhiro Sato, Katsuya Takahashi
  • Publication number: 20200003254
    Abstract: A fluid dynamic bearing device includes a shaft disposed along a center axis, a sleeve cylindrically extending around the shaft, a thruster that closes a lower end of the sleeve, dynamic pressure grooves in the shaft or the sleeve, and a lubricating oil present therebetween. The shaft includes a shaft main body and a shaft flange extending radially outward from a lower end of the shaft main body. An inner peripheral surface of the sleeve includes a first inner peripheral surface that faces an outer peripheral surface of the shaft main body in the radial direction and a second inner peripheral surface that faces an outer peripheral surface of the shaft flange in the radial direction. The sleeve includes a sleeve inner lower surface and a circulation hole.
    Type: Application
    Filed: May 3, 2019
    Publication date: January 2, 2020
    Inventors: Kazuhiro SATO, Katsuya TAKAHASHI
  • Publication number: 20190345312
    Abstract: The invention provides a diamine crosslinking agent for acidic polysaccharides consisting of a diamine compound having a primary amino group at both terminals and an ester or thioester bond in the molecule, wherein the number of atom in the linear chain between at least one of the amino groups and the carbonyl carbon in the ester or thioester is 1 to 5; in particular, a diamine crosslinking agent for acidic polysaccharides which is represented by the general formula (I) below: [the symbols in the formula are as described in the specification]; a crosslinked acidic polysaccharide obtained by forming crosslinks by amide bonding between the amino groups in the diamine crosslinking agent and carboxyl groups in an acidic polysaccharide; and a medical material including the crosslinked product.
    Type: Application
    Filed: March 22, 2019
    Publication date: November 14, 2019
    Applicant: Seikagaku Corporation
    Inventors: Sho Funayama, Yosuke Yasuda, Akihiro Takezawa, Katsuya Takahashi
  • Publication number: 20190214052
    Abstract: A yoke includes a first cylindrical unit held by a radially outside surface of a rotor base, a yoke annular unit extending radially outwardly from an axially lower end of the first cylindrical unit, and a second cylindrical unit extending axially downward from a radially outer end of the yoke annular unit, and a magnet fixed to a radially inside surface of the second cylindrical unit.
    Type: Application
    Filed: November 15, 2018
    Publication date: July 11, 2019
    Inventors: Kazuhiro SATO, Seiji MARUOKA, Katsuya TAKAHASHI
  • Publication number: 20190214868
    Abstract: A protrusion includes a leading end to which a yoke is fixed and a connector that connects an axially lower end of a flange and the leading end. A minimum width of the connector in a direction intersecting a direction in which the protrusion protrudes is smaller than a maximum width of the leading end in a radial direction. A radial position at a radially inner end of the leading end is located radially outward with respect to a side surface in a radially inward direction of a magnet.
    Type: Application
    Filed: November 15, 2018
    Publication date: July 11, 2019
    Inventors: Takuo MIYAKE, Kazuhiro SATO, Katsuya TAKAHASHI
  • Patent number: 10294195
    Abstract: The invention provides a diamine crosslinking agent for acidic polysaccharides consisting of a diamine compound having a primary amino group at both terminals and an ester or thioester bond in the molecule, wherein the number of atom in the linear chain between at least one of the amino groups and the carbonyl carbon in the ester or thioester is 1 to 5; in particular, a diamine crosslinking agent for acidic polysaccharides which is represented by the general formula (I) below: [the symbols in the formula are as described in the specification]; a crosslinked acidic polysaccharide obtained by forming crosslinks by amide bonding between the amino groups in the diamine crosslinking agent and carboxyl groups in an acidic polysaccharide; and a medical material including the crosslinked product.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: May 21, 2019
    Assignee: Seikagaku Corporation
    Inventors: Sho Funayama, Yosuke Yasuda, Akihiro Takezawa, Katsuya Takahashi
  • Patent number: 10290317
    Abstract: A fluid bearing apparatus includes a stationary member and a rotating member. A bearing surface of the stationary member and a bearing surface of the rotating member are arranged opposite to each other with a minute gap therebetween. The minute gap has a fluid arranged therein. At least one of the bearing surfaces includes a first dynamic pressure groove array. The first dynamic pressure groove array includes a plurality of first dynamic pressure grooves arranged unevenly at irregular intervals in a circumferential direction.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: May 14, 2019
    Assignee: NIDEC CORPORATION
    Inventors: Takumi Shimomura, Masahiro Imahori, Shingo Suginobu, Katsuya Takahashi
  • Publication number: 20180315450
    Abstract: A fluid bearing apparatus includes a stationary member and a rotating member. A bearing surface of the stationary member and a bearing surface of the rotating member are arranged opposite to each other with a minute gap therebetween. The minute gap has a fluid arranged therein. At least one of the bearing surfaces includes a first dynamic pressure groove array. The first dynamic pressure groove array includes a plurality of first dynamic pressure grooves arranged unevenly at irregular intervals in a circumferential direction.
    Type: Application
    Filed: March 22, 2018
    Publication date: November 1, 2018
    Inventors: Takumi SHIMOMURA, Masahiro IMAHORI, Shingo SUGINOBU, Katsuya TAKAHASHI
  • Patent number: 10109312
    Abstract: A motor that rotates an annular member includes a stationary portion including a stator, and a rotating portion arranged to be rotatable about a central axis extending in a vertical direction. The rotating portion includes a hub extending in an annular shape around the central axis; a magnet including a pole surface arranged radially opposite to the stator; and a yoke to which the magnet is fixed. The yoke includes a yoke increased thickness portion arranged radially outside of the magnet; and a yoke decreased thickness portion with a radial thickness smaller than that of the yoke increased thickness portion, and arranged axially above the yoke increased thickness portion. The yoke decreased thickness portion is fixed to the hub annular portion through press fitting.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: October 23, 2018
    Assignee: NIDEC CORPORATION
    Inventors: Masahiro Shiraishi, Katsuya Takahashi
  • Patent number: 10109311
    Abstract: A stationary portion includes a stator unit including coils in an annular shape with a central axis as a center; a base portion below the stator unit; and a housing defining an interior space in which a rotating portion, a bearing portion, and the stator unit are accommodated. The base portion includes a through hole extending through the base portion in an axial direction to join an outside of the housing and the interior space to each other; a sheet covering an upper opening of the through hole to close the through hole; a filler covering a lower opening of the through hole; and a vent passage defined in at least one of the base portion and the sheet to join the through hole and the interior space to each other.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: October 23, 2018
    Assignee: NIDEC CORPORATION
    Inventors: Takumi Shimomura, Shingo Suginobu, Katsuya Takahashi
  • Publication number: 20180289730
    Abstract: An agent for applying to mucosa capable of persistently exerting a therapeutic effect on disorders such as inflammation and lesions in the mucosa even by a lower frequency of administration because the agent can stay at a diseased site for a long period of time by exhibiting a high staying property in a mucosal epithelial layer is provided, said agent for application to mucosa containing glycosaminoglycan (GAG) into which a hydrophobic group is introduced via a binding chain, as an active ingredient.
    Type: Application
    Filed: March 30, 2018
    Publication date: October 11, 2018
    Applicant: SEIKAGAKU CORPORATION
    Inventors: Kenji MIYAMOTO, Katsuya TAKAHASHI, Yuuji SHIMOJIMA
  • Publication number: 20180174610
    Abstract: A spindle motor includes a stationary portion, a rotating portion arranged to rotate about a central axis extending in a vertical direction, and a bearing portion arranged to support the rotating portion such that the rotating portion is rotatable with respect to the stationary portion. The stationary portion includes a stator unit including a plurality of coils arranged in an annular shape with the central axis as a center; a base portion arranged below the stator unit; and a housing arranged to define an interior space in which the rotating portion, the bearing portion, and the stator unit are accommodated.
    Type: Application
    Filed: October 27, 2017
    Publication date: June 21, 2018
    Inventors: Takumi SHIMOMURA, Shingo SUGINOBU, Katsuya TAKAHASHI
  • Publication number: 20180108377
    Abstract: This motor is arranged to rotate an annular member, and includes a stationary portion including a stator, and a rotating portion arranged to be rotatable about a central axis extending in a vertical direction. The rotating portion includes a hub arranged to extend in an annular shape around the central axis; a magnet including a pole surface arranged radially opposite to the stator; and a yoke to which the magnet is fixed. The hub includes a hub annular portion in the shape of a circular ring and arranged above the stator, and a flange surface on which the annular member is arranged. The yoke includes a yoke increased thickness portion arranged radially outside of the magnet; and a yoke decreased thickness portion arranged to have a radial thickness smaller than that of the yoke increased thickness portion, and arranged axially above the yoke increased thickness portion. The yoke decreased thickness portion is fixed to the hub annular portion through press fitting.
    Type: Application
    Filed: June 27, 2017
    Publication date: April 19, 2018
    Inventors: Masahiro SHIRAISHI, Katsuya TAKAHASHI
  • Patent number: 9842620
    Abstract: A motor includes a rotating portion including a rotor magnet, and arranged to rotate about a central axis extending in a vertical direction; a bearing mechanism arranged to support the rotating portion such that the rotating portion is rotatable about the central axis; a stator portion arranged opposite to the rotor magnet; a housing arranged to accommodate the rotating portion, the bearing mechanism, and the stator portion therein; and a sealing member. The housing includes a base portion substantially in a shape of a plate and arranged to extend radially below the rotating portion. The base portion includes a first lower surface arranged to face downward, and a through hole arranged to pass through the base portion in the vertical direction and arranged to have a portion of the bearing mechanism arranged therein. The sealing member is arranged to cover a lower side of the through hole, and includes at least a metal layer.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: December 12, 2017
    Assignee: NIDEC CORPORATION
    Inventors: Katsuya Takahashi, Masahiro Shiraishi
  • Publication number: 20170287520
    Abstract: A motor includes a rotating portion including a rotor magnet, and arranged to rotate about a central axis extending in a vertical direction; a bearing mechanism arranged to support the rotating portion such that the rotating portion is rotatable about the central axis; a stator portion arranged opposite to the rotor magnet; a housing arranged to accommodate the rotating portion, the bearing mechanism, and the stator portion therein; and a sealing member. The housing includes a base portion substantially in a shape of a plate and arranged to extend radially below the rotating portion. The base portion includes a first lower surface arranged to face downward, and a through hole arranged to pass through the base portion in the vertical direction and arranged to have a portion of the bearing mechanism arranged therein. The sealing member is arranged to cover a lower side of the through hole, and includes at least a metal layer.
    Type: Application
    Filed: June 21, 2017
    Publication date: October 5, 2017
    Inventors: Katsuya TAKAHASHI, Masahiro SHIRAISHI
  • Patent number: 9721608
    Abstract: A motor includes a rotating portion including a rotor magnet, and arranged to rotate about a central axis extending in a vertical direction; a bearing mechanism arranged to support the rotating portion such that the rotating portion is rotatable about the central axis; a stator portion arranged opposite to the rotor magnet; a housing arranged to accommodate the rotating portion, the bearing mechanism, and the stator portion therein; and a sealing member. The housing includes a base portion substantially in a shape of a plate and arranged to extend radially below the rotating portion. The base portion includes a first lower surface arranged to face downward, and a through hole arranged to pass through the base portion in the vertical direction and arranged to have a portion of the bearing mechanism arranged therein. The sealing member is arranged to cover a lower side of the through hole, and includes at least a metal layer.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: August 1, 2017
    Assignee: NIDEC CORPORATION
    Inventors: Katsuya Takahashi, Masahiro Shiraishi