Patents by Inventor Kazuki Kajiyama

Kazuki Kajiyama 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: 20240132439
    Abstract: A highly heat-resistant organic compound with favorable hole-transport properties is provided. The organic compound is represented by General Formula (G1). In General Formula (G1), X represents a sulfur atom or an oxygen atom, and R21 to R25 and R27 to R30 each independently represent any one of hydrogen, halogen, a nitrile group, an alkenyl group, a vinyl group, an alkynyl group, an ethynyl group, a straight-chain alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an alkylsilyl group having 3 to 10 carbon atoms, an aryl group having 6 to 30 carbon atoms, and a heteroaryl group having 2 to 30 carbon atoms. Ar1 represents an aryl group having 6 to 30 carbon atoms or a heteroaryl group having 2 to 30 carbon atoms. Ar2 is represented by General Formula (G1-1).
    Type: Application
    Filed: September 29, 2023
    Publication date: April 25, 2024
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Sachiko Kawakami, Kazuki KAJIYAMA
  • Publication number: 20230354625
    Abstract: A photoelectric conversion device in which an increase in driving voltage is inhibited is provided. The photoelectric conversion device includes a first electrode, a second electrode, and an organic compound layer; the organic compound layer is positioned between the first electrode and the second electrode; the organic compound layer includes a first layer; a structure body including projections is included between the first layer and the second electrode; and the structure body contains a first organic compound.
    Type: Application
    Filed: April 25, 2023
    Publication date: November 2, 2023
    Inventors: Daisuke KUBOTA, Akio YAMASHITA, Kazuya SUGIMOTO, Taisuke KAMADA, Sachiko KAWAKAMI, Kazuki KAJIYAMA, Yasutaka NAKAZAWA, Kaori IKADA
  • Publication number: 20230286999
    Abstract: A novel organic compound that is highly convenient, useful, or reliable is provided. An organic compound represented by General Formula (G1) is provided. In General Formula (G1), D1 represents a thiophene-diyl group, a furan-diyl group, a thiophene-containing heteroarylene group, or a furan-containing heteroarylene group; Ar1 and Ar2 each independently represent a heteroarylene group or an arylene group; A1 and A2 each independently represent hydrogen, deuterium, a nitro group, an alkyl group, a halogen, an alkyl halide group, a cyano group, an alkoxy group, a vinyl group, or a formyl group; n1 represents an integer of 1 or more; and m1 and k1 each independently represent an integer of 0 to 3.
    Type: Application
    Filed: February 24, 2023
    Publication date: September 14, 2023
    Inventors: Anna TADA, Sachiko KAWAKAMI, Daisuke KUBOTA, Taisuke KAMADA, Kazuki KAJIYAMA
  • Patent number: 10094526
    Abstract: A vehicle lamp according to an aspect of the present invention includes a light source, a metal light-source stage including a light-source mounting portion, and a lens member that emits light from the light source toward the front of the lamp. The light-source stage includes a support portion for the lens member. The lens member includes a leg projecting toward the light-source stage and having an end that is supported by the support portion. The support portion includes three projections that abut the leg in a state in which the leg is supported by the support portion and position the lens member in a direction of an optical axis. The three projections are positioned relative to one another such that at least a portion of the light source lies in an extension range of a triangle with vertices given by the three projections.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: October 9, 2018
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Ryo Takada, Kazuki Kajiyama, Takahito Osawa, Mamoru Kosuge, Kenji Yoshida, Masashi Katayama, Shuji Matsuura
  • Patent number: 9593819
    Abstract: A sunlight restricting member is disposed between a light emitting element and a lens. The sunlight restricting member is configured (i) to allow direct light from the light emitting element to be incident on the lens and (ii) to restrict sunlight from reaching, through the lens, at least one of the light emitting element and a light source support member.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: March 14, 2017
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Takuma Sano, Kazuki Kajiyama
  • Publication number: 20160320012
    Abstract: A vehicle lamp according to an aspect of the present invention includes a light source, a metal light-source stage including a light-source mounting portion, and a lens member that emits light from the light source toward the front of the lamp. The light-source stage includes a support portion for the lens member. The lens member includes a leg projecting toward the light-source stage and having an end that is supported by the support portion. The support portion includes three projections that abut the leg in a state in which the leg is supported by the support portion and position the lens member in a direction of an optical axis. The three projections are positioned relative to one another such that at least a portion of the light source lies in an extension range of a triangle with vertices given by the three projections.
    Type: Application
    Filed: July 12, 2016
    Publication date: November 3, 2016
    Inventors: Ryo TAKADA, Kazuki KAJIYAMA, Takahito OSAWA, Mamoru KOSUGE, Kenji YOSHIDA, Masashi KATAYAMA, Shuji MATSUURA
  • Publication number: 20150103544
    Abstract: A sunlight restricting member is disposed between a light emitting element and a lens. The sunlight restricting member is configured (i) to allow direct light from the light emitting element to be incident on the lens and (ii) to restrict sunlight from reaching, through the lens, at least one of the light emitting element and a light source support member.
    Type: Application
    Filed: October 6, 2014
    Publication date: April 16, 2015
    Inventors: Takuma Sano, Kazuki Kajiyama