Patents by Inventor Tomomasa Kajita

Tomomasa Kajita 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: 20250006986
    Abstract: A liquid composition has a solvent, an inorganic solid electrolyte and a dispersant. A solid concentration of the inorganic solid electrolyte in the liquid composition is 20% by mass or higher. The dispersant is soluble in the solvent. A relative permittivity of the solvent at 25° C. is 6.0 or lower.
    Type: Application
    Filed: October 28, 2022
    Publication date: January 2, 2025
    Applicant: Ricoh Company, Ltd.
    Inventors: Tomomasa Kajita, Hiromichi Kuriyama, Satoshi Nakajima, Yuji Sone
  • Patent number: 12034117
    Abstract: A liquid composition containing a solvent, an inorganic solid electrolyte, and a dispersant is provided. The dispersant is soluble in the solvent. A 10% volume fraction-component's particle diameter (D10), a 50% volume fraction-component's particle diameter (D50), a 90% volume fraction-component's particle diameter (D90), and a mode diameter (Dm) of solids contained in the liquid composition satisfy D90/D10>10, D50<1 ?m, and Dm<2 ?m, where D10, D50, D90, and Dm are measured by a laser diffraction method.
    Type: Grant
    Filed: November 8, 2022
    Date of Patent: July 9, 2024
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomomasa Kajita, Hiromichi Kuriyama, Satoshi Nakajima, Yoshio Itoh, Shigeo Takeuchi, Yuji Sone, Aya Utsuki, Kayato Ohya
  • Patent number: 11978881
    Abstract: A set of liquid compositions used to form a positive or negative electrode layer is provided. The set of liquid compositions includes a first liquid composition having a first electrode material dissolving or dispersing in a first liquid; and a second liquid composition having a second electrode material dissolving or dispersing in a second liquid, the second electrode material differing from the first electrode material, and the second liquid differing from the first liquid, wherein the second electrode material dissolves or disperses easily in the second liquid than in the first liquid.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: May 7, 2024
    Assignee: Ricoh Company, Ltd.
    Inventors: Satoshi Nakajima, Hiromichi Kuriyama, Tomomasa Kajita, Toshiya Sagisaka, Masayoshi Nomura
  • Publication number: 20240088343
    Abstract: An electrode manufacturing method includes a first step of applying an electrode liquid composition in a desired shape at a desired position on a substrate, the electrode liquid composition containing an electrode mixture material; a second step of acquiring positional information as to where the electrode liquid composition is applied; and a third step of cutting only the substrate at a desired position in a region other than an electrode mixture material region where the electrode liquid composition is applied to obtain an electrode cut out in a desired shape.
    Type: Application
    Filed: February 28, 2022
    Publication date: March 14, 2024
    Inventors: Hiromichi KURIYAMA, Satoshi NAKAJIMA, Shun GOTO, Tomomasa KAJITA, Masayoshi NOMURA, Keigo TAKAUJI, Miku OHKIMOTO
  • Publication number: 20230272239
    Abstract: A liquid composition contains an inorganic oxide and an organic solvent represented by the following Chemical Formula 1, where R1 and R2 each, independently represent straight chain alkyl groups or straight chain alkoxy groups, wherein the organic solvent has a topological index chai4v of 0.9 or greater.
    Type: Application
    Filed: February 17, 2023
    Publication date: August 31, 2023
    Inventors: Kayato OHYA, Ryuji HIGASHI, Toshiya SAGISAKA, Soh NOGUCHI, Yoshio ITOH, Tomomasa KAJITA, Satoshi NAKAJIMA, Hiromichi KURIYAMA, Shigeo TAKEUCHI
  • Publication number: 20230198010
    Abstract: A liquid composition containing a solvent, an inorganic solid electrolyte, and a dispersant is provided. The dispersant is soluble in the solvent. A 10% volume fraction-component's particle diameter (D10), a 50% volume fraction-component's particle diameter (D50), a 90% volume fraction-component's particle diameter (D90), and a mode diameter (Dm) of solids contained in the liquid composition satisfy D90/D10>10, D50<1 ?m, and Dm<2 ?m, where D10, D50, D90, and Dm are measured by a laser diffraction method.
    Type: Application
    Filed: November 8, 2022
    Publication date: June 22, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Tomomasa KAJITA, Hiromichi Kuriyama, Satoshi Nakajima, Yoshio Itoh, Shigeo Takeuchi, Yuji Sone, Aya Utsuki, Kayato Ohya
  • Publication number: 20220302454
    Abstract: Provided is a liquid composition containing an active substance, and a dispersion medium having a relative permittivity of 30 or lower at 25 degrees C.
    Type: Application
    Filed: March 12, 2022
    Publication date: September 22, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Satoshi NAKAJIMA, Hiromichi Kuriyama, Tomomasa Kajita, Toshiya Sagisaka, Porraphon Tantitarntong
  • Publication number: 20210159480
    Abstract: A set of liquid compositions used to form a positive or negative electrode layer is provided. The set of liquid compositions includes a first liquid composition having a first electrode material dissolving or dispersing in a first liquid; and a second liquid composition having a second electrode material dissolving or dispersing in a second liquid, the second electrode material differing from the first electrode material, and the second liquid differing from the first liquid, wherein the second electrode material dissolves or disperses easily in the second liquid than in the first liquid.
    Type: Application
    Filed: November 20, 2020
    Publication date: May 27, 2021
    Inventors: Satoshi NAKAJIMA, Hiromichi KURIYAMA, Tomomasa KAJITA, Toshiya SAGISAKA, Masayoshi NOMURA
  • Patent number: 4307589
    Abstract: A lock comprises a cylindrical case with a turnable member rotatably mounted therein. A latch member is also rotatably mounted in the case. The latch member is rotatable in a first direction to lock the lock and in an opposite second direction to unlock the lock. A drive member is co-rotatably mounted in the case between and with the turnable member and the latch member. At least one magnetically attractable tumbler is movably mounted on the interior of the turnable member and has a portion which projects into engagement with a receiving cavity of the drive member when the lock is in an unlocked position. This permits the drive member to move axially away from the latch so that rotation of the drive member to rotate the latch to an unlocked position will release the latch.
    Type: Grant
    Filed: January 8, 1979
    Date of Patent: December 29, 1981
    Inventor: Tomomasa Kajita
  • Patent number: 4285220
    Abstract: A magnetically operable key comprises a cylindrical casing containing a turnable member, a drive member and a latch, which are all co-rotatably mounted in the casing with the drive member axially displaceable between the turnable member and the latch within the casing. The drive member has a groove defined thereon which has two circumferential portions and a slanted portion interconnecting the circumferential portions. An engagement pin is connected to the casing and extends into the guide groove for causing axial movement of the drive member when the drive member is rotated and when the pin is disposed in the slanted portion. At least one magnetic piece is pivotally mounted to the turnable member and movable by a magnetic key from a misaligned position to an aligned position. The drive member has a cavity for receiving the magnetic piece when aligned to permit axial movement of the drive member. The misaligned magnetic piece abuts against the drive member and prevents axial movement thereof.
    Type: Grant
    Filed: November 13, 1978
    Date of Patent: August 25, 1981
    Inventor: Tomomasa Kajita