Patents by Inventor Yasuhiro Hirano

Yasuhiro Hirano 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: 12110450
    Abstract: An object of the present invention is to provide a diverting agent that can exhibit sufficient filling properties against a fracture in a well in an excavation method using a hydraulic fracturing method, and that is excellent in solubility after a predetermined period of time has passed. The diverting agent of the present invention contains a polyvinyl alcohol-based resin having an average polymerization degree of 1000 or more.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: October 8, 2024
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Yasuhiro Hirano, Takahiro Saka, Ryosuke Taniguchi, Chizuko Furo
  • Patent number: 12071584
    Abstract: An object of the present invention is to provide a diverting agent that can exhibit sufficient filling properties against a fracture in a well in an excavation method using a hydraulic fracturing method, and that is excellent in solubility after a predetermined period of time has passed. The diverting agent of the present invention contains a polyvinyl alcohol-based resin having an average polymerization degree of 1000 or more.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: August 27, 2024
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Yasuhiro Hirano, Takahiro Saka, Ryosuke Taniguchi, Chizuko Furo
  • Patent number: 12054667
    Abstract: A diverting agent is provided that exhibits sufficient filling properties against a fracture in a well because of swelling without complete dissolution for a certain period of time (about 30 minutes to 5 hours), and that quickly dissolves and can be removed even at a low temperature of 40° C. to 60° C. after a certain period of time has passed. Also provided is a diverting agent that contains a modified polyvinyl alcohol-based resin.
    Type: Grant
    Filed: June 22, 2021
    Date of Patent: August 6, 2024
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Yasuhiro Hirano, Takahiro Saka, Ryosuke Taniguchi, Chizuko Furo
  • Publication number: 20240228744
    Abstract: The present invention relates to a polyvinyl alcohol-based resin composition containing a polyvinyl alcohol-based resin (A), in which a molding shrinkage rate in at least one direction of an MD direction and a TD direction during injection molding is 0.4% or more.
    Type: Application
    Filed: September 27, 2023
    Publication date: July 11, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yasuhiro HIRANO, Yuya KANAMORI
  • Patent number: 11939855
    Abstract: A diverting agent and method for temporarily filling fractures. The diverting agent contains a powder-like polyvinyl alcohol-based resin (P1) and a pellet-like polyvinyl alcohol-based resin (P2), and has an adsorption coefficient kc of 0.01 or more and 1 or less.
    Type: Grant
    Filed: April 20, 2023
    Date of Patent: March 26, 2024
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shusaku Mandai, Yasuhiro Hirano, Yuya Kanamori, Kenji Furui, Keito Ikebata, Tomoki Onishi
  • Patent number: 11898090
    Abstract: A diverting agent which has performance to release filling due to biodegradability, can be quickly removed after a certain period of time, and has an excellent filling property with respect to a fracture in a well is provided. The diverting agent contains particles having a particle diameter of 1,700 ?m or more in an amount of 10 to 70 mass %, particles having a particle diameter of 500 ?m or more and less than 1,700 ?m in an amount of 20 to 80 mass %, and particles having a particle diameter of less than 250 ?m in an amount of 5 to 40 mass %, and the diverting agent contains a biodegradable resin in an amount of 10 mass % or more.
    Type: Grant
    Filed: December 28, 2021
    Date of Patent: February 13, 2024
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Chizuko Furo, Yuya Kanamori, Yasuhiro Hirano
  • Patent number: 11891569
    Abstract: A diverting agent is provided which has solubility in water that can be controlled excellently and which does not easily dissolve at an early stage of filling of fractures in a well in excavation method using a hydraulic fracturing method and dissolves in water and can be easily removed after filling is no longer needed. The diverting agent contains powdery polyvinyl alcohol-based resins having an average particle diameter of 800 to 2000 ?m.
    Type: Grant
    Filed: August 9, 2021
    Date of Patent: February 6, 2024
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Yasuhiro Hirano, Ryosuke Taniguchi, Chizuko Furo
  • Publication number: 20230258066
    Abstract: An object of the present invention is to provide a diverting agent having an excellent filling property against various fractures. The diverting agent of the present invention contains a powder-like polyvinyl alcohol-based resin (P1) and a pellet-like polyvinyl alcohol-based resin (P2), and has an adsorption coefficient kc of 0.01 or more and 1 or less, which is obtained by a method including steps (i) to (iii). (The steps (i) to (iii) are the same as those described in the description.
    Type: Application
    Filed: April 20, 2023
    Publication date: August 17, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Shusaku MANDAI, Yasuhiro HIRANO, Yuya KANAMORI, Kenji FURUI, Keito IKEBATA, Tomoki ONISHI
  • Patent number: 11715068
    Abstract: A data processing apparatus includes a central processing unit that receives user operations for changing a portion of a document, and edits the document by a first user and a second user in parallel. The first user and the second user each have an editing right and, in response to the editing rights, an editing page is displayed differently depending on the user.
    Type: Grant
    Filed: October 26, 2021
    Date of Patent: August 1, 2023
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Kimitake Hasuike, Yasuhiro Hirano
  • Patent number: 11674073
    Abstract: A diverting agent of the present invention contains a polyvinyl alcohol-based resin, wherein when the diverting agent is added to a 0.48 mass % aqueous solution of guar gum to prepare a mixed solution having a concentration of 12 mass %, a dispersion liquid obtained by dispersing the mixed solution at 30° C.
    Type: Grant
    Filed: August 9, 2021
    Date of Patent: June 13, 2023
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shusaku Mandai, Yasuhiro Hirano, Ryosuke Taniguchi, Chizuko Furo, Kenji Furui, Kenji Shinohara, Ken Sato
  • Publication number: 20220119697
    Abstract: An object of the present invention is to provide a diverting agent which has performance to release filling due to biodegradability, can be quickly removed after a certain period of time, and has an excellent filling property with respect to a fracture in a well. The diverting agent according to the present invention contains particles having a particle diameter of 1,700 ?m or more in an amount of 10 to 70 mass %, particles having a particle diameter of 500 ?m or more and less than 1,700 ?m in an amount of 20 to 80 mass %, and particles having a particle diameter of less than 250 ?m in an amount of 5 to 40 mass %, and the diverting agent contains a biodegradable resin in an amount of 10 mass % or more.
    Type: Application
    Filed: December 28, 2021
    Publication date: April 21, 2022
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Chizuko FURO, Yuya KANAMORI, Yasuhiro HIRANO
  • Publication number: 20220044202
    Abstract: A data processing apparatus includes a central processing unit that receives user operations for changing a portion of a document, and edits the document by a first user and a second user in parallel. The first user and the second user each have an editing right and, in response to the editing rights, an editing page is displayed differently depending on the user.
    Type: Application
    Filed: October 26, 2021
    Publication date: February 10, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Kimitake Hasuike, Yasuhiro Hirano
  • Patent number: 11243670
    Abstract: An information processing system includes a memory, a content display, an extraction unit, and a message display. The memory stores multiple pieces of content and multiple messages transmitted by multiple users. The content display displays the multiple pieces of content. The extraction unit extracts multiple messages from the memory if a user selects at least one piece of content of the multiple displayed pieces of content. The multiple extracted messages refer to the at least one piece of content or have the at least one piece of content attached to the multiple extracted messages. The message display displays the multiple messages extracted by the extraction unit.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: February 8, 2022
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Yasuhiro Hirano, Kimitake Hasuike, Tomohito Takagi
  • Publication number: 20210363411
    Abstract: A diverting agent of the present invention contains a polyvinyl alcohol-based resin, wherein when the diverting agent is added to a 0.48 mass % aqueous solution of guar gum to prepare a mixed solution having a concentration of 12 mass %, a dispersion liquid obtained by dispersing the mixed solution at 30° C.
    Type: Application
    Filed: August 9, 2021
    Publication date: November 25, 2021
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Shusaku MANDAI, Yasuhiro HIRANO, Ryosuke TANIGUCHI, Chizuko FURO, Kenji FURUI, Kenji SHINOHARA, Ken SATO
  • Publication number: 20210363413
    Abstract: An object of the invention is to provide a diverting agent which has solubility in water that can be controlled excellently and which does not easily dissolve at an early stage of filling of fractures in a well in excavation method using a hydraulic fracturing method and dissolves in water and can be easily removed after filling is no longer needed. The diverting agent of the invention contains powdery polyvinyl alcohol-based resins having an average particle diameter of 800 to 2000 ?m.
    Type: Application
    Filed: August 9, 2021
    Publication date: November 25, 2021
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yasuhiro HIRANO, Ryosuke TANIGUCHI, Chizuko FURO
  • Publication number: 20210363412
    Abstract: An object of the present invention is to provide a diverting agent which does not completely dissolve in water and seawater in an ultra-low temperature to low temperature range (5° C. to 30° C.) for a certain period of time (about 5 minutes to 3 hours), and is quickly dissolved and removed after a certain period of time in an excavation method using a hydraulic fracturing method. The present invention relates to a diverting agent containing a polyvinyl alcohol-based resin having 2.3 mol % to 15 mol % of a hydrophilic modifying group in a molecular structure thereof.
    Type: Application
    Filed: August 9, 2021
    Publication date: November 25, 2021
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yasuhiro HIRANO, Ryosuke TANIGUCHI, Chizuko FURO
  • Patent number: 11182745
    Abstract: A data processing apparatus includes a central processing unit that receives user operations for changing a portion of a document, and edits the document by a first user and a second user in parallel. The first user and the second user each have an editing right and, in response to the editing rights, an editing page is displayed differently depending on the user.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: November 23, 2021
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Kimitake Hasuike, Yasuhiro Hirano
  • Publication number: 20210309910
    Abstract: An object of the present invention is to provide a diverting agent that can exhibit sufficient filling properties against a fracture in a well in an excavation method using a hydraulic fracturing method, and that is excellent in solubility after a predetermined period of time has passed. The diverting agent of the present invention contains a polyvinyl alcohol-based resin having an average polymerization degree of 1000 or more.
    Type: Application
    Filed: June 21, 2021
    Publication date: October 7, 2021
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yasuhiro HIRANO, Takahiro SAKA, Ryosuke TANIGUCHI, Chizuko FURO
  • Publication number: 20210309909
    Abstract: An object of the present invention is to provide a diverting agent that does not completely dissolve for a certain period of time (about 5 minutes to 3 hours) and has high cohesiveness between particles. The present invention relates to a diverting agent containing a polyvinyl alcohol-based resin having a degree of saponification of 65 mol % to 95 mol %.
    Type: Application
    Filed: June 21, 2021
    Publication date: October 7, 2021
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yasuhiro HIRANO, Takahiro SAKA, Ryosuke TANIGUCHI, Chizuko FURO
  • Publication number: 20210309911
    Abstract: An object of the present invention is to provide a diverting agent that exhibits sufficient filling properties against a fracture in a well because of swelling without completely dissolution for a certain period of time (about 30 minutes to 5 hours), and that quickly dissolves and be removed even at a low temperature of 40° C. to 60° C. after a certain period of time has passed. The present invention relates to a diverting agent containing a modified polyvinyl alcohol-based resin.
    Type: Application
    Filed: June 22, 2021
    Publication date: October 7, 2021
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Yasuhiro HIRANO, Takahiro SAKA, Ryosuke TANIGUCHI, Chizuko FURO