Patents by Inventor Yukihiro Ida

Yukihiro Ida 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: 20240184224
    Abstract: The external additive for toner includes an external additive particle containing: a fine particle A; and a plurality of fine particles B that are each present so as to partially protrude from a surface of the fine particle A, wherein the fine particle A (i) is a particle of an organosilicon compound having a siloxane bond, (ii) has a number-average particle diameter of 0.03 ?m or more and 0.30 ?m or less, and (iii) has an average circularity of 0.90 or more, wherein, when the number-average particle diameter of the fine particle A is represented by DA, and a number-average particle diameter of the plurality of fine particles B is represented by DB, DB/DA is 0.10 or more and 0.63 or less.
    Type: Application
    Filed: November 16, 2023
    Publication date: June 6, 2024
    Inventors: YUKIHIRO ABE, ICHIRO KANNO, JUNICHI TAMURA, MARI KABURAGI, HAYATO IDA, MASAO SUZUKI, KEI INOUE, WAKA HASEGAWA
  • Publication number: 20240184226
    Abstract: An external additive for toner comprising: a fine particle A containing, as a binder component, an organosilicon compound having a siloxane bond; and a fine particle B that is present on a surface of the fine particle A in a state of being at least partially embedded in the surface of the fine particle A, wherein the external additive for toner (i) has a number-average particle diameter of a primary particle of 0.03 ?m or more and 0.30 ?m or less, and (ii) has a Young's modulus of 10 GPa or more and 30 GPa or less, wherein content ratios, on a number basis, of the following unit (a), unit (b), and unit (c) in the fine particle A based on all silicon atoms present in the fine particle A satisfy the following expressions (1) and (2). (a)+(b)+(c)?0.80??(1) (b)+(c)?0.
    Type: Application
    Filed: November 16, 2023
    Publication date: June 6, 2024
    Inventors: ICHIRO KANNO, YUKIHIRO ABE, JUNICHI TAMURA, MARI KABURAGI, HAYATO IDA, MASAO SUZUKI, KEI INOUE, WAKA HASEGAWA
  • Publication number: 20240176258
    Abstract: The external additive for toner includes an external additive particle containing: a base particle A; and a plurality of convex forming particles B each configured to form a convex portion on a surface of the base particle A. The base particle A and the convex forming particles B are particles each containing a silicon compound having a siloxane bond, and a chemical bond is formed between the base particle A and each of the convex forming particles B. The base particle A and the convex forming particles B each have a total content of the following unit (a), unit (b), and unit (c) of 80 mass % or more and 100 mass % or less: where R1 and R2 each represent an alkyl group having 1 or more and 6 or less carbon atoms.
    Type: Application
    Filed: November 16, 2023
    Publication date: May 30, 2024
    Inventors: JUNICHI TAMURA, ICHIRO KANNO, YUKIHIRO ABE, MARI KABURAGI, HAYATO IDA, MASAO SUZUKI, KEI INOUE, WAKA HASEGAWA
  • Publication number: 20050001349
    Abstract: Disclosed herein are a lactic acid-based polymer composition comprising: (i) an amide compound represented by General Formula (1): R1—(CONHR2)a??(1) wherein R1 represents a C2-30 saturated or unsaturated aliphatic polycarboxylic acid residue, a C4-28 saturated or unsaturated alicyclic polycarboxylic acid residue, or a C6-28 aromatic polycarboxylic acid residue, and R2 represents C1-18 alkyl, C2-18 alkenyl, C3-12 cycloalkyl or cycloalkenyl or the like, (ii) an ester plasticizer, and (iii) a lactic acid-based polymer; a transparent, crystalline (heat resistant) molded article molded from such a lactic acid-based polymer composition; and a method for producing such a molded article.
    Type: Application
    Filed: November 14, 2002
    Publication date: January 6, 2005
    Inventors: Masahumi Yosimura, Toshiyuki Kamogawa, Kazuhiro Hattori, Yukihiro Ida
  • Patent number: D348686
    Type: Grant
    Filed: July 28, 1992
    Date of Patent: July 12, 1994
    Assignee: Casio Computer Co., Ltd.
    Inventors: Toshio Igo, Yukihiro Ida