Patents by Inventor Hisataka TAKAGI

Hisataka TAKAGI 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: 11858209
    Abstract: A fabricating apparatus includes a powder layer forming device, a fabrication liquid discharge device, and processing circuitry. The powder layer forming device is configured to form a powder layer. The fabrication liquid discharge device is configured to discharge fabrication liquid onto the powder layer. The processing circuitry is configured to control the fabrication liquid discharge device to discharge the fabrication liquid with a first kinetic energy and then discharge the fabrication liquid with a second kinetic energy higher than the first kinetic energy.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: January 2, 2024
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yuji Nagatomo, Kenichiroh Hashimoto, Hisataka Takagi, Takuei Nishio
  • Publication number: 20230278102
    Abstract: A lamination fabricating method includes forming a powder layer including a powder for three-dimensional fabrication, applying a fabrication liquid to the powder layer, repeating the forming of the powder layer and the forming the powder layer to form a fabricated object, and forming a base layer prior to the forming of the powder layer. A powder filling rate of the base layer is higher than a powder filling rate of the powder layer.
    Type: Application
    Filed: March 3, 2023
    Publication date: September 7, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Yasuyuki Yamashita, Hisataka Takagi
  • Publication number: 20230211550
    Abstract: A liquid fabrication applied to a layer of powder containing an inorganic particle, wherein the liquid fabrication has a powder contact angle with the inorganic particle of 50 degrees or greater and satisfies the following relationship 1: ?cos?/??1.5 m/s, where ? represents the powder contact angle, ? represents a surface tension in mN/m of the liquid fabrication at 23 degrees C., and ? represents a viscosity in mPa·s of the liquid fabrication at 25 degrees C.
    Type: Application
    Filed: January 3, 2023
    Publication date: July 6, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Koji TAKIMOTO, Shinichiroh Satoh, Keisuke Shiba, Yuki Shingai, Noriaki Okada, Yuji Nagatomo, Tomoki Kai, Hisataka Takagi, Yoichi Ito, Tsuyoshi Arao, Takashi Matsumura, Tomomi Akieda
  • Publication number: 20230150025
    Abstract: A fabricated object manufactured from powder contained in a container of a fabrication apparatus is provided. The fabricated object satisfies the following relationship d>d?, where d (?m) denotes a number average diameter of the powder contained in the container and d? (?m) denotes a number average diameter of the powder included in the fabricated object.
    Type: Application
    Filed: October 20, 2022
    Publication date: May 18, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Hisataka Takagi, Ryoichi Saotome, Daichi Yamaguchi
  • Publication number: 20210299953
    Abstract: A fabricating apparatus includes a powder layer forming device, a fabrication liquid discharge device, and processing circuitry. The powder layer forming device is configured to form a powder layer. The fabrication liquid discharge device is configured to discharge fabrication liquid onto the powder layer. The processing circuitry is configured to control the fabrication liquid discharge device to discharge the fabrication liquid with a first kinetic energy and then discharge the fabrication liquid with a second kinetic energy higher than the first kinetic energy.
    Type: Application
    Filed: March 29, 2021
    Publication date: September 30, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Yuji NAGATOMO, Kenichiroh HASHIMOTO, Hisataka TAKAGI, Takuei NISHIO