Patents by Inventor Yuu Zama

Yuu Zama 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
  • Publication number: 20240021825
    Abstract: A liquid composition for electrodes is capable of forming an isolation layer having an excellent adhesion to the electrode composite material layer when used as an electrode for an electrochemical device. A corresponding electrochemical device has excellent electrochemical device characteristics. The liquid composition for an electrode contains inorganic particles, a resin, and a dispersant. The resin is soluble in a non-polar solvent or in a mixed solvent containing a non-polar solvent, and the resin has an ethylene oxide chain in a main chain.
    Type: Application
    Filed: November 24, 2021
    Publication date: January 18, 2024
    Applicant: Ricoh Company, Ltd.
    Inventors: Kohji Matsuoka, Hiromitsu Kawase, Yuu Zama, Ryuji Higashi, Okitoshi Kimura, Tomoya Ohmura, Takuya Saiga, Naoki Shiraishi, Toshiya Sagisaka, Daisuke Nose
  • 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
  • Publication number: 20230290951
    Abstract: An electrode is provided that includes a current collector, an electrode mixture layer on the current collector, and an insulating layer on the electrode mixture layer. The electrode mixture layer includes an active material. The insulating layer includes an insulating material and a resin having a repeating structural unit represented by a specific general formula.
    Type: Application
    Filed: February 28, 2023
    Publication date: September 14, 2023
    Inventors: Daisuke NOSE, Minehide KUSAYANAGI, Ryuji HIGASHI, Kohji MATSUOKA, Yuu ZAMA, Takuya SAIGA, Tomoya OHMURA
  • 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: 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: 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: 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
  • 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: 20200321616
    Abstract: A disclosed electrode includes an electrode base; an electrode mixture layer containing an active material and formed on the electrode base; and a porous insulating layer formed on the electrode mixture layer, where the porous insulating layer contains a resin as a main component, and at least a part of the porous insulating layer is present inside the electrode mixture layer.
    Type: Application
    Filed: December 14, 2018
    Publication date: October 8, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Keigo TAKAUJI, Hideo YANAGITA, Masahiro MASUZAWA, Yuu ZAMA, Okitoshi KIMURA, Hiromitsu KAWASE, Miku OHKIMOTO
  • Publication number: 20200119333
    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: March 5, 2018
    Publication date: April 16, 2020
    Inventors: Masahiro MASUZAWA, Toru USHIROGOCHI, Hideo YANAGITA, Yuu ZAMA, Aya YOSHIDA, Shigeo TAKEUCHI, Anna HIROWATARI, Okitoshi KIMURA, Kohji MATSUOKA, Keigo TAKAUJI, Miku OHKIMOTO
  • Publication number: 20190288276
    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: Application
    Filed: March 15, 2019
    Publication date: September 19, 2019
    Inventors: Aya UTSUKI, Masahiro MASUZAWA, Kohji MATSUOKA, Yuu ZAMA, Anna HIROWATARI, Hideo YANAGITA
  • Publication number: 20190288259
    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: Application
    Filed: March 12, 2019
    Publication date: September 19, 2019
    Inventors: Miku OHKIMOTO, Hideo YANAGITA, Keigo TAKAUJI, Masahiro MASUZAWA, Yuu ZAMA, Okitoshi KIMURA, Hiromitsu KAWASE
  • Patent number: 10087093
    Abstract: A fluid treatment apparatus for treating a target fluid is provided. The fluid treatment apparatus includes a cylindrical reactor and one or more catalyst members each having a rod-like or plate-like shape extending in a longitudinal direction within the reactor. The cylindrical reactor decomposes an organic substance contained in a mixed fluid of the target fluid with an oxidant by an oxidation reaction under heat and pressure. The cylindrical reactor has an introduction port on one end and a discharge port on the other end. An upstream end surface, relative to a direction of flow of the target fluid, of each of the catalyst members is located in a downstream vicinity of or upstream from an inflow position where the target fluid flows into the reactor through the introduction port. Each of the catalyst members is suspended with the upstream end surface being fixed.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: October 2, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshiyuki Mutoh, Shogo Suzuki, Yuu Zama, Aya Utsuki, Kimio Aoki, Hideyuki Miyazawa, Makito Nakashima, Kenichi Hayakawa, Shigeru Yamada