Patents by Inventor Hideo Yanagita

Hideo Yanagita 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: 11955640
    Abstract: An inorganic particle layer for use in an electrode of a non-aqueous electrolyte power storage element is provided. The inorganic particle layer includes an inorganic particle and a polymer. The inorganic particle is insulating and has a surface potential. The polymer has an ionic functional group (A) and an ion-conducting functional group (B) each charged opposite to the surface potential of the inorganic particle. The inorganic particle and the polymer are bonded to each other.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: April 9, 2024
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuu Zama, Masahiro Masuzawa, Kohji Matsuoka, Hideo Yanagita, Ryuji Higashi, Anna Hirowatari
  • Patent number: 11909031
    Abstract: A disclosed film electrode includes an electrode base, and an active material layer formed on the electrode base, and a resin layer adhering to at least one of a peripheral portion of the active material layer and a surface of the active material layer in a direction extending along a plane of the electrode base.
    Type: Grant
    Filed: November 30, 2022
    Date of Patent: February 20, 2024
    Assignee: Ricoh Company, Ltd.
    Inventors: Masahiro Masuzawa, Toru Ushirogochi, Hideo Yanagita, Yuu Zama, Aya Yoshida, Shigeo Takeuchi, Anna Hirowatari, Okitoshi Kimura, Kohji Matsuoka, Keigo Takauji, Miku Ohkimoto
  • Patent number: 11807783
    Abstract: A liquid composition for manufacturing electrodes contains a radical polymerizable composition containing an ethylenically unsaturated compound having an oxyethylene group and a polymerization inhibitor, wherein infrared absorption spectra before curing the radical polymerizable composition include a first absorption band in a range of 1640 to 1620 cm?1, a second absorption band in a range of 1430 to 1400 cm?1, and a third absorption band in a range of 820 to 800 cm?1, and the second absorption band has a greater absorption intensity than the third absorption band, and the third absorption band has a greater absorption intensity than the first absorption band, and wherein the infrared absorption spectra after curing the radical polymerizable composition are substantially free of the first absorption band, the second absorption band, and third absorption band.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: November 7, 2023
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hiromitsu Kawase, Yuu Zama, Okitoshi Kimura, Kohji Matsuoka, Ryuji Higashi, Yusuke Kanno, Hideo Yanagita, Masahiro Masuzawa
  • Patent number: 11732061
    Abstract: A liquid composition that contains a polymerizable compound and a solvent, and that can form a porous resin. The liquid composition, when stirred, transmits at least 30 percent of incident light having a wavelength of 550 nm. The haze value of an containing the liquid composition increases by 1.0 percent or more when the element containing the liquid composition is cured.
    Type: Grant
    Filed: June 2, 2021
    Date of Patent: August 22, 2023
    Assignee: RICOH COMPANY, LTD.
    Inventors: Miku Ohkimoto, Keigo Takauji, Hideo Yanagita, Toru Ushirogochi
  • Publication number: 20230091130
    Abstract: A disclosed film electrode includes an electrode base, and an active material layer formed on the electrode base, and a resin layer adhering to at least one of a peripheral portion of the active material layer and a surface of the active material layer in a direction extending along a plane of the electrode base.
    Type: Application
    Filed: November 30, 2022
    Publication date: March 23, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Masahiro MASUZAWA, Toru Ushirogochi, Hideo Yanagita, Yuu Zama, Aya Yoshida, Shigeo Takeuchi, Anna Hirowatari, Okitoshi Kimura, Kohji Matsuoka, Keigo Takauji, Miku Ohkimoto
  • Patent number: 11588147
    Abstract: A disclosed film electrode includes an electrode base, and an active material layer formed on the electrode base, and a resin layer adhering to at least one of a peripheral portion of the active material layer and a surface of the active material layer in a direction extending along a plane of the electrode base.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: February 21, 2023
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masahiro Masuzawa, Toru Ushirogochi, Hideo Yanagita, Yuu Zama, Aya Yoshida, Shigeo Takeuchi, Anna Hirowatari, Okitoshi Kimura, Kohji Matsuoka, Keigo Takauji, Miku Ohkimoto
  • Patent number: 11545308
    Abstract: A liquid composition includes particles and a solvent, wherein a contact angle of the liquid composition with respect to a substrate is greater than a contact angle of the solvent with respect to the substrate, and the contact angle of the substrate with respect to water observed 9 seconds after the substrate comes into contact with the water is 45 degrees to 75 degrees.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: January 3, 2023
    Assignee: RICOH COMPANY, LTD.
    Inventors: Kohji Matsuoka, Ryuji Higashi, Masahiro Masuzawa, Hideo Yanagita, Yuu Zama, Tomoya Ohmura, Yusuke Kanno, Daisuke Nose
  • Publication number: 20220407074
    Abstract: An electrode is capable of achieving both the safety of a corresponding electrochemical device and at least one of the output or the capacity retention rate. The electrode contains an electrode composite material layer, an insulating layer, and an electrode substrate. The electrode composite material layer and the insulating layer are sequentially formed on the electrode substrate, and the electrode composite material layer is coated by the insulating layer. An average value of the coverage percentage of the electrode composite material layer by the insulating layer in the electrode is 90% or more.
    Type: Application
    Filed: November 18, 2020
    Publication date: December 22, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Masahiro MASUZAWA, Kohji Matsuoka, Yuu Zama, Tomoya Ohmura, Ryuji Higashi, Hideo Yanagita
  • Patent number: 11532811
    Abstract: A composite material includes vanadium lithium phosphate, and a conductive carbon. an amount of the conductive carbon is 2.5 mass % or more and 7.5 mass % or less.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: December 20, 2022
    Assignee: Ricoh Company, Ltd.
    Inventors: Yusuke Kanno, Hideo Yanagita, Satoshi Nakajima, Eiko Suzuki, Anna Hirowatari
  • Patent number: 11527748
    Abstract: In accordance with some embodiments of the present invention, an electrode was provided. The electrode includes an electrode composite layer and a porous insulating layer on the electrode composite layer. The electrode composite layer contains an active material. A surface roughness Rz of the electrode composite layer is smaller than an average film thickness of the porous insulating layer.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: December 13, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Eiko Hibino, Hiromichi Kuriyama, Satoshi Nakajima, Shigeo Takeuchi, Toru Ushirogochi, Hideo Yanagita, Keigo Takauji, Miku Ohkimoto
  • Patent number: 11387444
    Abstract: An electrode is provided which includes an electrode substrate, an electrode mixture layer overlying the electrode substrate, and an insulating layer overlying the electrode mixture layer. The electrode mixture layer contains an active material and a void. The insulating layer contains a resin and an insulating inorganic particulate accounting for 80% by mass of the insulating layer. In a boundary region of the electrode mixture layer with the insulating layer, the resin and the insulating inorganic particulate are present in a part of the void.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: July 12, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Aya Utsuki, Masahiro Masuzawa, Kohji Matsuoka, Yuu Zama, Anna Hirowatari, Hideo Yanagita
  • Publication number: 20220085458
    Abstract: A porous insulator contains a porous structure, containing a polymer compound having communicating pores, and a solid having a melting point or glass transition temperature lower than that of the polymer compound.
    Type: Application
    Filed: November 22, 2021
    Publication date: March 17, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Miku Ohkimoto, Hideo Yanagita, Keigo Takauji, Masahiro Masuzawa, Yuu Zama, Okitoshi Kimura, Hiromitsu Kawase
  • Patent number: 11258136
    Abstract: A porous insulator is provided. The porous insulator comprises a porous structure comprising a polymer compound having communicating pores, and a solid having a melting point or glass transition temperature lower than that of the polymer compound.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: February 22, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Miku Ohkimoto, Hideo Yanagita, Keigo Takauji, Masahiro Masuzawa, Yuu Zama, Okitoshi Kimura, Hiromitsu Kawase
  • Publication number: 20220013865
    Abstract: A disclosed liquid composition includes particles; a resin; a solvent A; and a solvent B differing from the solvent A, wherein a surface tension with respect to air at 25° C. is 25 mN/m or more and less than 50 mN/m, a 90% diameter is 2.5 ?m or less, and a median diameter is 1 ?m or less.
    Type: Application
    Filed: January 22, 2020
    Publication date: January 13, 2022
    Inventors: Kohji MATSUOKA, Ryuji HIGASHI, Masahiro MASUZAWA, Hideo YANAGITA
  • Publication number: 20210320342
    Abstract: An inorganic particle layer for use in an electrode of a non-aqueous electrolyte power storage element is provided. The inorganic particle layer includes an inorganic particle and a polymer. The inorganic particle is insulating and has a surface potential. The polymer has an ionic functional group (A) and an ion-conducting functional group (B) each charged opposite to the surface potential of the inorganic particle. The inorganic particle and the polymer are bonded to each other.
    Type: Application
    Filed: October 31, 2019
    Publication date: October 14, 2021
    Inventors: Yuu ZAMA, Masahiro MASUZAWA, Kohji MATSUOKA, Hideo YANAGITA, Ryuji HIGASHI, Anna HIROWATARI
  • Publication number: 20210284761
    Abstract: A liquid composition that contains a polymerizable compound and a solvent, and that can form a porous resin. The liquid composition, when stirred, transmits at least 30 percent of incident light having a wavelength of 550 nm. The haze value of an containing the liquid composition increases by 1.0 percent or more when the element containing the liquid composition is cured.
    Type: Application
    Filed: June 2, 2021
    Publication date: September 16, 2021
    Inventors: Miku OHKIMOTO, Keigo TAKAUJI, Hideo YANAGITA, Toru USHIROGOCHI
  • Publication number: 20210261796
    Abstract: A liquid composition for manufacturing electrodes contains a radical polymerizable composition containing an ethylenically unsaturated compound having an oxyethylene group and a polymerization inhibitor, wherein infrared absorption spectra before curing the radical polymerizable composition include a first absorption band in a range of 1640 to 1620 cm?1, a second absorption band in a range of 1430 to 1400 cm?1, and a third absorption band in a range of 820 to 800 cm?1, and the second absorption band has a greater absorption intensity than the third absorption band, and the third absorption band has a greater absorption intensity than the first absorption band, and wherein the infrared absorption spectra after curing the radical polymerizable composition are substantially free of the first absorption band, the second absorption band, and third absorption band.
    Type: Application
    Filed: February 16, 2021
    Publication date: August 26, 2021
    Inventors: Hiromitsu KAWASE, Yuu ZAMA, Okitoshi KIMURA, Kohji MATSUOKA, Ryuji HIGASHI, Yusuke KANNO, Hideo YANAGITA, Masahiro MASUZAWA
  • Patent number: 11053327
    Abstract: A liquid composition that contains a polymerizable compound and a solvent, and that can form a porous resin. The liquid composition, when stirred, transmits at least 30 percent of incident light having a wavelength of 550 nm. The haze value of an containing the liquid composition increases by 1.0 percent or more when the element containing the liquid composition is cured.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: July 6, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Miku Ohkimoto, Keigo Takauji, Hideo Yanagita, Toru Ushirogochi
  • Publication number: 20210159023
    Abstract: A liquid composition includes particles and a solvent, wherein a contact angle of the liquid composition with respect to a substrate is greater than a contact angle of the solvent with respect to the substrate, and the contact angle of the substrate with respect to water observed 9 seconds after the substrate comes into contact with the water is 45 degrees to 75 degrees.
    Type: Application
    Filed: November 18, 2020
    Publication date: May 27, 2021
    Inventors: Kohji MATSUOKA, Ryuji HIGASHI, Masahiro MASUZAWA, Hideo YANAGITA, Yuu ZAMA, Tomoya OHMURA, Yusuke KANNO, Daisuke NOSE
  • Publication number: 20210159494
    Abstract: The present invention relates to a liquid composition including particles and a solvent, wherein a diffusion coefficient of the liquid composition decreases in one step-shaped curve through a single inflection point as content of the particles increases, and wherein the content of the particles is greater than or equal to the content of the particles at the inflection point.
    Type: Application
    Filed: November 20, 2020
    Publication date: May 27, 2021
    Inventors: Ryuji HIGASHI, Kohji MATSUOKA, Masahiro MASUZAWA, Yuko HAYAMA, Hideo YANAGITA