Patents by Inventor Okitoshi Kimura

Okitoshi Kimura 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: 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: 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
  • 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: 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: 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: 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: 10280319
    Abstract: Ink contains at least one of a compound represented by the following chemical formula 1, a compound represented by chemical formula 2, a compound represented by chemical formula 3, or a compound represented by chemical formula 4.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: May 7, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Mitsunobu Morita, Soh Noguchi, Okitoshi Kimura
  • Publication number: 20180261827
    Abstract: An electrode of a power storage device includes an electrode current collector; and electrode material layers stacked on one side of the electrode current collector, to store and discharge lithium ions. As an anode, each electrode material layer includes a first material and a second material that causes less deposit of the lithium ions on a surface of the anode than the first material, and the farther the electrode material layer is placed from the electrode current collector, the greater a ratio of a weight of the second material becomes. As a cathode, each of the electrode material layers includes a third material and a fourth material that has a higher diffusibility with respect to lithium ions than the third material, and the farther the electrode material layer is placed from the electrode current collector, the less a ratio of a weight of the fourth material becomes.
    Type: Application
    Filed: February 20, 2018
    Publication date: September 13, 2018
    Applicant: Ricoh Company, Ltd.
    Inventors: Hideo YANAGITA, Shigeo TAKEUCHI, Yuu ZAMA, Anna HIROWATARI, Aya YOSHIDA, Toru USHIROGOCHI, Okitoshi KIMURA
  • Patent number: 10005922
    Abstract: An active ray-curable composition characterized by containing a photobase generator, a double bond-containing compound, and a ?-dicarbonyl compound.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: June 26, 2018
    Assignees: RICOH COMPANY, LTD., Tokyo University of Science Foundation
    Inventors: Soh Noguchi, Okitoshi Kimura, Koji Arimitsu
  • Patent number: 9831521
    Abstract: To provide a nonaqueous electrolytic storage element, which contains: a positive electrode, which contains a positive electrode material layer including a positive electrode active material capable of reversibly accumulating and releasing anions; a negative electrode, which contains a negative electrode material layer including a negative electrode active material capable of reversibly accumulating and releasing cations; a separator provided between the positive electrode and the negative electrode; and a nonaqueous electrolyte containing an electrolyte salt, wherein a pore volume of the negative electrode material layer per unit area of the negative electrode is larger than a pore volume of the positive electrode material layer per unit area of the positive electrode.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: November 28, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Okitoshi Kimura, Nobuaki Onagi, Eiko Hibino, Hisamitsu Kamezaki, Anna Hirowatari, Yasunori Sugimoto
  • Patent number: 9754726
    Abstract: To provide a nonaqueous electrolytic capacitor element, which contains: a positive electrode containing a positive electrode active material capable of intercalating or deintercalating anions; a negative electrode containing a negative electrode active material; and a nonaqueous electrolyte, which contains a nonaqueous solvent, an electrolyte salt containing a halogen atom, and a compound having a site capable of bonding to an anion containing a halogen atom.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: September 5, 2017
    Assignees: Ricoh Company, Ltd., Kyushu University
    Inventors: Nobuaki Onagi, Okitoshi Kimura, Eiko Hibino, Hisamitsu Kamezaki, Tatsumi Ishihara
  • Publication number: 20170137644
    Abstract: Ink contains at least one of a compound represented by the following chemical formula 1, a compound represented by chemical formula 2, a compound represented by chemical formula 3, or a compound represented by chemical formula 4.
    Type: Application
    Filed: January 31, 2017
    Publication date: May 18, 2017
    Inventors: Mitsunobu MORITA, Soh Noguchi, Okitoshi Kimura
  • Patent number: 9593248
    Abstract: Ink contains at least one of a compound represented by the following chemical formula 1, a compound represented by chemical formula 2, a compound represented by chemical formula 3, or a compound represented by chemical formula 4.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: March 14, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Mitsunobu Morita, Soh Noguchi, Okitoshi Kimura
  • Publication number: 20160260972
    Abstract: To provide a non-aqueous electrolyte storage element including a positive electrode containing a positive electrode active material capable of inserting and eliminating anions, a negative electrode containing a negative electrode active material capable of inserting and eliminating cations, and a non-aqueous electrolyte prepared by dissolving an electrolyte salt in a non-aqueous solvent, wherein the positive electrode active material contains a carbon material, where a distance between (002) planes, d(002), of the carbon material as measured by X-ray diffraction is 0.340 nm or greater but 0.360 nm or less, and the carbon material has a BET specific surface area of greater than 1 m2/g but smaller than 30 m2/g, and the negative electrode active material contains a material capable of inserting and eliminating lithium ions.
    Type: Application
    Filed: February 22, 2016
    Publication date: September 8, 2016
    Inventors: Eiko HIBINO, Okitoshi KIMURA, Nobuaki ONAGI, Satoshi NAKAJIMA, Anna HIROWATARI, Takashi YAMAGATA, Tatsumi ISHIHARA, Yoshihisa TANAKA, Ryo OSHIMA, Toshihiro NAKABO
  • Patent number: 9267043
    Abstract: A polymerizable compound is provided. The polymerizable compound has two or more polymerizable functional groups in a molecule thereof, wherein one of the two or more polymerizable functional groups of the polymerizable compound is an acrylamide group having the below-mentioned formula (1). The polymerizable compound can be preferably used for inkjet ink.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: February 23, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Mitsunobu Morita, Soh Noguchi, Okitoshi Kimura