Patents by Inventor Kazufumi Yamazaki

Kazufumi Yamazaki 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: 20240128481
    Abstract: A gasket member for a solid polymer fuel cell, the gasket member including at least a laminate provided with a base material layer, and an adhesion layer positioned on both sides of the base material layer, wherein the laminate has a percentage retention of elongation at break of at least 60% after being left for 300 hours in 120° C. water.
    Type: Application
    Filed: February 10, 2022
    Publication date: April 18, 2024
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Kazufumi KODANI, Tsubasa KAGATA, Atsuko TAKAHAGI, Masayasu YAMAZAKI, Yoshiko KIYOHARA, Takashi NAKAMURA, Naoto TABUCHI
  • Publication number: 20240091905
    Abstract: An abrasive slurry regeneration method includes: collecting at least a used abrasive slurry containing an abrasive component and a constituent component of a polishing target object discharged from a polishing machine; inactivating a metal ion dissolved in the used abrasive slurry; dispersing the abrasive component and the constituent component of the polishing target object contained in the used abrasive slurry; separating the dispersed abrasive component and constituent component of the polishing target object to remove the constituent component of the polishing target object; and preparing a regenerated abrasive slurry containing the abrasive component.
    Type: Application
    Filed: August 24, 2023
    Publication date: March 21, 2024
    Inventors: Shin NAKAYAMA, Atsushi Takahashi, Kazufumi Yamazaki, Akihiro Maezawa, Sadatoshi Nishibuchi, Kenichi Tabata
  • Patent number: 11433603
    Abstract: The present invention pertains to a powder material used to manufacture a three-dimensional modeled object by selectively radiating laser light to a thin layer of the powder material including powder particles, forming a modeled object layer obtained by melt-binding of the powder particles, and layering the modeled object layer. The powder particles include a core resin and a shell resin for coating the core resin, the temperature at which the storage modulus G? of the material constituting the shell resin is 1×106.5 Pa being higher than the temperature at which the storage modulus G? of the material constituting the core resin is 1×106.5 Pa. The abovementioned powder material, makes it possible to manufacture a three-dimensional modeled object having higher definition.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: September 6, 2022
    Assignee: KONICA MINOLTA, INC.
    Inventors: Masaharu Shiraishi, Kazuya Isobe, Akiko Hara, Kazufumi Yamazaki
  • Publication number: 20220089837
    Abstract: A material for a hot melt extrusion method contains at least a cellulose derivative and an additive. The cellulose derivative is cellulose acetate propionate and when a degree of substitution of an acetyl group is X and a degree of substitution of a propionyl group is Y, the cellulose derivative satisfies the following Expression (1) and Expression (2); and the additive contains a plasticizer and a compound A containing a partial structure having a NICS value in the range of ?14 or more and ?10 or less, 2.0 ? X + Y ? 3.0 Expression ? ? ( 1 ) 0.5 ? Y ? 2.6 .
    Type: Application
    Filed: January 27, 2020
    Publication date: March 24, 2022
    Inventors: Kazufumi YAMAZAKI, Yukihito NAKAZAWA, Kenji GOTO, Nobuo KUBO
  • Patent number: 11167476
    Abstract: A method for manufacturing a three-dimensionally shaped object includes: forming a thin layer of a powder material containing core-shell type resin particles containing a core resin and a shell resin with a storage elastic modulus G? of 1×108.0 Pa or more at a temperature Tc(7.0) at which the storage elastic modulus G? of the core resin is 1×107.0 Pa; selectively irradiating the formed thin layer with laser light to form a shaped object layer in which the resin particles contained in the powder material are sintered or fused; and a step of performing the step of forming the thin layer and the step of forming the shaped object layer in this order a plurality of times to laminate the shaped object layer. In the forming of the shaped object layer, a surface temperature of the thin layer is higher than Tc(7.0).
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: November 9, 2021
    Assignee: KONICA MINOLTA, INC.
    Inventors: Masaharu Shiraishi, Kazuya Isobe, Kazufumi Yamazaki
  • Publication number: 20200298473
    Abstract: The present invention pertains to a powder material used to manufacture a three-dimensional modeled object by selectively radiating laser light to a thin layer of the powder material including powder particles, forming a modeled object layer obtained by melt-binding of the powder particles, and layering the modeled object layer. The powder particles include a core resin and a shell resin for coating the core resin, the temperature at which the storage modulus G? of the material constituting the shell resin is 1×106.5 Pa being higher than the temperature at which the storage modulus G? of the material constituting the core resin is 1×106.5 Pa. The abovementioned powder material, makes it possible to manufacture a three-dimensional modeled object having higher definition.
    Type: Application
    Filed: October 4, 2016
    Publication date: September 24, 2020
    Applicant: Konica Minolta, Inc.
    Inventors: Masaharu SHIRAISHI, Kazuya ISOBE, Akiko HARA, Kazufumi YAMAZAKI
  • Publication number: 20190308369
    Abstract: A method for manufacturing a three-dimensionally shaped object includes: forming a thin layer of a powder material containing core-shell type resin particles containing a core resin and a shell resin with a storage elastic modulus G? of 1×108.0 Pa or more at a temperature Tc(7.0) at which the storage elastic modulus G? of the core resin is 1×107.0 Pa; selectively irradiating the formed thin layer with laser light to form a shaped object layer in which the resin particles contained in the powder material are sintered or fused; and a step of performing the step of forming the thin layer and the step of forming the shaped object layer in this order a plurality of times to laminate the shaped object layer. In the forming of the shaped object layer, a surface temperature of the thin layer is higher than Tc(7.0).
    Type: Application
    Filed: August 31, 2017
    Publication date: October 10, 2019
    Inventors: Masaharu SHIRAISHI, Kazuya ISOBE, Kazufumi YAMAZAKI
  • Publication number: 20030104237
    Abstract: Paper for newspaper, having a basis weight of 35 to 45 g/m2, and whose average pure flexural stiffness in the widthwise direction is adjusted to a range of 1 to 11 &mgr;N·m2/m following humidity conditioning at 23° C., 50% RH, and whose pH value is 5 to 9.5 as measured per the cold extraction-based pH test method of paper as defined in JIS P8133, and which doesn't cause forming jamming and offers excellent printability.
    Type: Application
    Filed: October 28, 2002
    Publication date: June 5, 2003
    Inventors: Shinichi Nakayama, Kazufumi Yamazaki, Yozo Igarashi, Hideki Fujiwara