Patents by Inventor Shigeru Watanabe

Shigeru Watanabe 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: 20230020603
    Abstract: A sludge dehydrating agent comprising a cationic polymer which has: a constitutional unit a derived from a quaternary ammonium salt having a specific structure; and at least one constitutional unit selected from among a constitutional unit b derived from a quaternary ammonium salt having a specific structure and a constitutional unit c derived from a tertiary amine salt having a specific structure, wherein the intrinsic viscosity of the cationic polymer at 30° C. in a 1 mol/L sodium nitrate aqueous solution is 0.5-4.0 dL/g.
    Type: Application
    Filed: December 4, 2020
    Publication date: January 19, 2023
    Applicant: KURITA WATER INDUSTRIES LTD.
    Inventors: Ayako SAKAMOTO, Shigeru SATO, Kazuya WATANABE, Yukihito MASUI
  • Publication number: 20220302475
    Abstract: A method of shaping a gasket on a separator without causing destruction and damage. A fuel battery separator gasket is shaped via a shaping of a sticking agent and a transfer of the sticking agent. During the shaping, the sticking agent to be the gasket is shaped on a flexible substrate having flexibility. During the transfer, the sticking agent shaped on the flexible substrate is transferred to one of a pair of separators facing each other with an electrolyte membrane provided in a fuel battery cell being interposed therebetween and each having a bead forming a flow path of fluid between the bead and the electrolyte membrane in close contact with the electrolyte membrane to shape the gasket.
    Type: Application
    Filed: September 1, 2020
    Publication date: September 22, 2022
    Applicant: NOK CORPORATION
    Inventors: Taisuke MATSUDA, Shigeru WATANABE
  • Publication number: 20220279041
    Abstract: A data sharing system includes a plurality of IoT networks 20, and a plurality of management terminals 1 connected to a blockchain network 10. In the data sharing system, each management terminal 1 includes a reception unit 12 that receives a transaction including IoT terminal information related to an IoT terminal 2 from at least one IoT network 20 of the plurality of the IoT networks 20, a communication unit 13 that transmits and receives the transaction to/from another management terminal 1, a block generation unit 14 that attempts to generate a block including the transaction, a block verification unit 15 that verifies a block generated by another management terminal 1, and a distributed ledger 16 that stores the generated blocks.
    Type: Application
    Filed: July 10, 2019
    Publication date: September 1, 2022
    Inventors: Tatsuro ISHIDA, Atsushi NAKADAIRA, Shigeru Fujimura, Shigenori Ohashi, Hiroki Watanabe
  • Patent number: 11424913
    Abstract: A key exchange system method safely conceal secret information recorded on a blockchain. A first terminal includes a license issuing unit that generates a first transaction including a first public key, a first key storage region that retains a first secret key, and a first encrypting and decrypting unit that generates a common key using deal-specific information, a second public key, and the first secret key, and a second terminal includes a license requesting unit that generates a second transaction including the second public key, a second key storage region that retains a second secret key, and a second encrypting and decrypting unit that generates the common key using deal-specific information, the first public key, and the second secret key. The first encrypting and decrypting unit encrypts secret information using the common key. The second encrypting and decrypting unit decrypts the encrypted secret information using the common key.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: August 23, 2022
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Hiroki Watanabe, Tsunekazu Saito, Koutarou Suzuki, Shigenori Ohashi, Shigeru Fujimura, Atsushi Nakadaira
  • Publication number: 20220255754
    Abstract: A data registration system of the present embodiment includes a control device 20 and a cooperating device 30. The control device 20 includes a communication unit 21 that receives a data registration request to which an electronic signature of a user is added, a verification unit 22 that verifies identity of the user, a transaction generation unit 23 that, if identity of the user is verified, takes out data included in the data registration request, transmits the data to the cooperating device 30 to store the data in the cooperating device 30, generates a transaction based on the data registration request, and adds an electronic signature to the transaction, the transaction including information for accessing the data stored in the cooperating device 30, and a blockchain control unit 24 that issues the transaction to a blockchain network. The cooperating device 30 includes a communication unit 31 that receives the data and a storage unit 33 that stores the data in association with the transaction.
    Type: Application
    Filed: July 12, 2019
    Publication date: August 11, 2022
    Inventors: Tatsuro ISHIDA, Atsushi NAKADAIRA, Shigeru FUJIMURA, Shigenori OHASHI, Hiroki WATANABE
  • Publication number: 20220253230
    Abstract: When an updated file that is an updated version of an original file is registered in a distributed file management system 100, a difference creation unit 222 creates a difference file between the original file and the updated file, a route object creation unit 223 creates a route object that includes an ID of the original file and an ID of the difference file, and a distributed file management client 11 causes the difference file and the route object to be registered in the distributed file management system 100.
    Type: Application
    Filed: May 21, 2020
    Publication date: August 11, 2022
    Inventors: Shigenori Ohashi, Shigeru Fujimura, Tatsuro ISHIDA, Atsushi NAKADAIRA, Hiroki Watanabe, Junichi KISHIGAMI
  • Publication number: 20220247570
    Abstract: A permission terminal 4 includes a generation unit 423 that generates access information for content using a content public key of the content and a user public key of a browser of the content, and a registration unit 424 that registers the access information in a blockchain. The access information includes an aggregate public key in which the content public key and the user public key are aggregated, a message for the content, and a content signature in which the message is signed with a content private key corresponding to the content public key.
    Type: Application
    Filed: June 17, 2019
    Publication date: August 4, 2022
    Inventors: Hiroki Watanabe, Shigenori Ohashi, Tatsuro Ishida, Shigeru Fujimura, Atsushi Nakadaira
  • Publication number: 20220231310
    Abstract: A seal structure is provided that follows fluctuations in a gap between a pair of fuel cell separators without generating a large tightening force. A pair of separators facing each other with an electrolyte membrane as a mating member interposed therebetween have beads which form a flow path for fluid between the beads and the electrolyte membrane in close contact with the electrolyte membrane. A seal which seals the pair of separators causes the beads 14 of the pair of these separators to overlap each other in a nested manner. A seal material having elasticity is provided between side walls of the respective beads which face each other. When the gap between the pair of separators fluctuates, the seal material deforms in a shearing direction.
    Type: Application
    Filed: August 24, 2020
    Publication date: July 21, 2022
    Inventors: Taisuke MATSUDA, Shigeru WATANABE
  • Patent number: 11380909
    Abstract: A method includes a forming step of forming a first metal separator and a second metal separator each including a protruding sealing bead portion and a protruding stopper bead portion; a joining step of joining surfaces of the first metal separator and the second metal separator on sides opposite to sides on which their respective sealing bead portions protrude, and attaching seal members in an extension direction or on distal ends of the sealing bead portion; and a preload applying step of applying preload to a bead seal section formed of one pair of the sealing bead portions and the seal members and a stopper section formed of one pair of the stopper bead portions in a height direction thereof, thereby plastically deforming the bead seal section and the stopper section simultaneously.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: July 5, 2022
    Inventors: Yohei Sano, Shigeru Watanabe, Akihito Giga, Suguru Ohmori
  • Patent number: 11372847
    Abstract: A consensus is formed for a private database shared within a group. A block verification device includes: a private database shared within a group; a communication unit receiving a list of transactions from an overall leader device; a transaction processing unit executing the transactions identified based on the list and outputting the execution results; and a block processing unit generating a proposal including a list, a digest of the private database after execution of the transactions, and a private dataset included in the transactions. The communication unit transmits the proposal to another block verification device belonging to the same group, and transmits the list, the digest of the private database, and the digest of the private dataset to all the other block verification devices when it is determined that a consensus for the proposal is formed.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: June 28, 2022
    Assignee: Nippon Telegraph and Telephone Corporatioin
    Inventors: Shigenori Ohashi, Hiroki Watanabe, Shigeru Fujimura, Atsushi Nakadaira, Tatsuro Ishida
  • Patent number: 11302931
    Abstract: A method of manufacturing a separator assembly for fuel cell includes a separator assembly forming step in which a separator assembly including a first metal separator and a second metal separator each having a protruding bead portion is formed by joining together the surfaces of the first and second metal separators opposite from their respective bead portions protruding, and a preload applying step in which a pair of platens apply a preload in a thickness direction of the separator assembly to a bead seal section formed of one pair of the bead portions, and thereby the bead seal section is plastically deformed. In the preload applying step, the preload applied to a linear portion of the bead seal section is set to be smaller than the preload applied to a curve portion of the bead seal section.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: April 12, 2022
    Assignee: NOK CORPORATION
    Inventors: Junichi Shimada, Hajime Yui, Shigeru Watanabe, Toshihiro Shimazoe
  • Publication number: 20220093940
    Abstract: A separator-integrated gasket is provided for making an electrolyte membrane unlikely to be deformed when a stack is assembled. The separator-integrated gasket for a fuel battery includes a lip-shaped gasket, first and second separator components, and a flat-shaped gasket. The first and second separator components are made of press-workable metal plates, and include first and second three-dimensional shape portions, respectively. The first separator component includes a surface that is on a side opposite to a protruding direction of the first three-dimensional shape portion and on which a gasket attachment groove holding the lip-shaped gasket is formed. The second separator component includes a surface that is on a side opposite to a protruding direction of the second three-dimensional shape portion and on which a three-dimensional shape fitting groove accommodating the first three-dimensional shape portion is formed.
    Type: Application
    Filed: March 24, 2020
    Publication date: March 24, 2022
    Inventors: Taisuke MATSUDA, Shigeru WATANABE
  • Publication number: 20210194016
    Abstract: A method of manufacturing a separator assembly for fuel cell includes a separator assembly forming step in which a separator assembly including a first metal separator and a second metal separator each having a protruding bead portion is formed by joining together the surfaces of the first and second metal separators opposite from their respective bead portions protruding, and a preload applying step in which a pair of platens apply a preload in a thickness direction of the separator assembly to a bead seal section formed of one pair of the bead portions, and thereby the bead seal section is plastically deformed. In the preload applying step, the preload applied to a linear portion of the bead seal section is set to be smaller than the preload applied to a curve portion of the bead seal section.
    Type: Application
    Filed: December 21, 2020
    Publication date: June 24, 2021
    Applicant: NOK CORPORATION
    Inventors: Junichi SHIMADA, Hajime YUI, Shigeru WATANABE, Toshihiro SHIMAZOE
  • Publication number: 20210194019
    Abstract: A method includes a forming step of forming a first metal separator and a second metal separator each including a protruding sealing bead portion and a protruding stopper bead portion; a joining step of joining surfaces of the first metal separator and the second metal separator on sides opposite to sides on which their respective sealing bead portions protrude, and attaching seal members in an extension direction or on distal ends of the sealing bead portion; and a preload applying step of applying preload to a bead seal section formed of one pair of the sealing bead portions and the seal members and a stopper section formed of one pair of the stopper bead portions in a height direction thereof, thereby plastically deforming the bead seal section and the stopper section simultaneously.
    Type: Application
    Filed: December 21, 2020
    Publication date: June 24, 2021
    Inventors: Yohei SANO, Shigeru WATANABE, Akihito GIGA, Suguru OHMORI
  • Patent number: 10780610
    Abstract: Provided is a structure in which an inserted article is easily inserted and a product is easily released from a die after molding. The structure includes a positioning mechanism which is vertically arranged on one split die, includes a positioning pin having a tapered distal end, and positions the inserted article by engaging the inserted article with the positioning pin, a stop mechanism that has a spring means assembled with the one split die and a stopper portion held by the spring means, and temporarily stops movement of the other split die when the other split die comes into contact with the stopper portion at the time of mold clamping, and a pressing mechanism that has a spring assembled with the other split die, a pusher pin, a spring assembled with the one split die, and a pusher pin, and elastically presses the inserted article by the pusher pin.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: September 22, 2020
    Assignee: NOK CORPORATION
    Inventors: Takeshi Masaka, Shigeru Watanabe
  • Patent number: 10717219
    Abstract: The purpose of the present invention is to make it possible to shorten the time required for a burr removal step and make it difficult for the burrs to detach from a sheet member in a step for removing the burrs together with the sheet member. For removal, by making the burrs to adhere to a pliable sheet member such as paper or nonwoven fabric that has been incorporated beforehand in the molding die and stripping the sheet member from the molding die, the burrs are removed together with the sheet member. The present invention is characterized in that in order to make it difficult for the burrs to detach from the sheet member during the stripping, a radiused shape with an arc-shaped cross-section is formed by the molding die on the areas surrounding the sections where the burrs adhere to the sheet member.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: July 21, 2020
    Assignee: NOK CORPORATION
    Inventors: Bunpei Yoshida, Takeshi Masaka, Shigeru Watanabe, Shun Murasaki
  • Patent number: 10374453
    Abstract: An uninterruptible power supply, including a plurality of power supply units, a plurality of battery units and an information integration management unit. Each power supply unit belongs to one of an operating system and a standby system. Each battery unit belongs to one of a power failure standby system and a power failure backup system. The information integration management unit manages the power supply units and the battery units, by receiving an instruction from an externally connected management device, and setting each of the power supply units to be in the operating system or the standby system, and setting each of the battery units to be in the power failure standby system or the power failure backup system, in accordance with the received instruction.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: August 6, 2019
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Shigeru Watanabe, Kazuhiro Iwai, Asuka Ohno
  • Patent number: 10090536
    Abstract: In a fuel battery seal structure, a gasket has a base portion fitted in a non-bonded manner to a seal installation groove of a separator, and a seal protrusion brought into close contact with a seal groove of a separator. Presser projections and clearance grooves are formed in both sides in a width direction of the seal groove. The presser projections are brought into contact with the base portion of the gasket, and the clearance grooves are positioned in an opposite side to the seal groove as seen from the presser projections. Sum of widths of the seal groove and the presser projections in both sides thereof is smaller than a width of the seal installation groove, and sum of widths of the seal groove, and the presser projections and the clearance grooves in both sides thereof is larger than the width of the seal installation groove.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: October 2, 2018
    Assignee: NOK Corporation
    Inventors: Toshihiro Shimazoe, Shigeru Watanabe
  • Patent number: 9981475
    Abstract: An ink supply apparatus includes a first ink tank, a second ink tank, a first flow path configured to connect the first ink tank and the second ink tank, a volume change unit disposed on the first flow path, configured to be able to change an internal volume of its own, and allow ink to flow thereinto from the first flow path when the internal volume is expanded and to flow out to the first flow path when the internal volume is reduced, a first opening and closing unit disposed between the first ink tank and the volume change unit, and a second opening and closing unit disposed between the second ink tank and the volume change unit.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: May 29, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shigeru Watanabe, Kouhei Tokuda, Tsutomu Obata, Hiroyuki Matsunaka, Naoaki Wada, Eiichi Adachi, Noriyuki Aoki, Toshiro Sugiyama, Ryohei Maruyama, Ryuichi Kato
  • Patent number: 9971285
    Abstract: Provided is an image forming apparatus including a fixing member that transports a recording medium on which an image is transferred while nipping the recording medium to fix the image to the recording medium, a discharge member that discharges the recording medium by rotating forwardly, a guide member that guides the recording medium to a reverse transport path in which a front surface and a rear surface of the recording medium are reversed by coming in contact with the recording medium transported by the discharge member that reversely rotates, and a waving member that is disposed at a downstream side of the fixing member in the transport direction of the recording medium, and waves the recording medium transported by the fixing member in a width direction of the recording medium.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: May 15, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Koji Okabe, Shigeru Watanabe