Patents by Inventor Koutarou Takazaki

Koutarou Takazaki 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: 9469765
    Abstract: A golden rigid decorative member in which scratch resistance and abrasion resistance are significantly improved and deterioration of appearance quality due to a flaw, abrasion, or the like is suppressed, and which has a pale color with a high quality feel is stably provided. A single layer or several layers of a coating including a reaction compound of an alloy of Ti and one or two or more metals selected from Nb, Ta, and V, and of one or two non-metallic elements mainly including nitrogen and selected from carbon and oxygen are stacked on a base.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: October 18, 2016
    Assignees: CITIZEN HOLDINGS CO., LTD., CITIZEN WATCH CO., LTD.
    Inventor: Koutarou Takazaki
  • Patent number: 9471040
    Abstract: Provided is a rigid decorative member that has high film hardness, is excellent in scratch resistance performance and abrasion resistance performance, and has excellent color brightness and color saturation. The rigid decorative member of the present invention is a rigid decorative member wherein a reaction compound film of an alloy of Cr and a metal selected from one or two or more of Mo, W, Nb, Ta, Ti, Hf, Zr, and V, and of a non-metallic element selected from one or two or more of nitrogen, carbon, and oxygen is formed on a substrate. There is provided the rigid decorative member significantly improved in scratch resistance and abrasion resistance and having a color tone with a high quality feel; and there is further supplied a product of which the color tones of brightness and color saturation can be freely controlled.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: October 18, 2016
    Assignees: CITIZEN HOLDINGS CO., LTD., CITIZEN WATCH CO., LTD.
    Inventor: Koutarou Takazaki
  • Patent number: 9464355
    Abstract: Provided is a colored rigid decorative member in which scratch resistance is improved, and deterioration of appearance quality due to a flaw, abrasion, or the like is suppressed, and which has various color variations with a high quality feel. An alloy adhesion layer having a high adhesion effect, an alloy gradient adhesion layer of which the content of a reactant gas is increased in a gradient manner, an abrasion-resistant layer having high hardness, an alloy recolored gradient layer of which the content of a reactant gas is decreased in a gradient manner, and a colored decorative layer having high decorativeness and color variations on the outermost layer are formed on a base using a film with an alloy of a metal having the high effect of adhering to a metal and high brightness (metal having poor corrosion resistance; Mo, W), a metal having high film hardness and high corrosion resistance (metal having poor adhesion; Nb, Ta), and a metal improving corrosion resistance performance (Cr, Ti, Hf, Zr).
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: October 11, 2016
    Assignees: CITIZEN HOLDINGS CO., LTD., CITIZEN WATCH CO., LTD.
    Inventor: Koutarou Takazaki
  • Patent number: 9448535
    Abstract: A rigid decorative member of the present invention is a rigid decorative member comprising a base and a rigid coating layer laminated on or above the base, wherein the rigid coating layer comprises a reaction compound of raw metal, in which a metal M1 and a metal M2, and in addition, selectively a metal M3 are combined, and of a non-metallic element selected from one or two or more of nitrogen, carbon, and oxygen, or comprises an alloy in which a metal M1 and a metal M2, and in addition, selectively a metal M3 are combined; the metal M1 is selected from one or two of Mo and W; the metal M2 is selected from one or two or more of Nb, Ta, and V; and the metal M3 is selected from one or two or more of Cr, Ti, Hf, and Zr.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: September 20, 2016
    Assignees: CITIZEN HOLDINGS CO., LTD., CITIZEN WATCH CO., LTD.
    Inventor: Koutarou Takazaki
  • Publication number: 20150072138
    Abstract: A rigid decorative member of the present invention is a rigid decorative member comprising a base and a rigid coating layer laminated on or above the base, wherein the rigid coating layer comprises a reaction compound of raw metal, in which a metal M1 and a metal M2, and in addition, selectively a metal M3 are combined, and of a non-metallic element selected from one or two or more of nitrogen, carbon, and oxygen, or comprises an alloy in which a metal M1 and a metal M2, and in addition, selectively a metal M3 are combined; the metal M1 is selected from one or two of Mo and W; the metal M2 is selected from one or two or more of Nb, Ta, and V; and the metal M3 is selected from one or two or more of Cr, Ti, Hf, and Zr.
    Type: Application
    Filed: March 12, 2013
    Publication date: March 12, 2015
    Applicants: CITIZEN WATCH CO., LTD., CITIZEN HOLDINGS CO., LTD.
    Inventor: Koutarou Takazaki
  • Publication number: 20150064469
    Abstract: Provided is a colored rigid decorative member in which scratch resistance is improved, and deterioration of appearance quality due to a flaw, abrasion, or the like is suppressed, and which has various color variations with a high quality feel. An alloy adhesion layer having a high adhesion effect, an alloy gradient adhesion layer of which the content of a reactant gas is increased in a gradient manner, an abrasion-resistant layer having high hardness, an alloy recolored gradient layer of which the content of a reactant gas is decreased in a gradient manner, and a colored decorative layer having high decorativeness and color variations on the outermost layer are formed on a base using a film with an alloy of a metal having the high effect of adhering to a metal and high brightness (metal having poor corrosion resistance; Mo, W), a metal having high film hardness and high corrosion resistance (metal having poor adhesion; Nb, Ta), and a metal improving corrosion resistance performance (Cr, Ti, Hf, Zr).
    Type: Application
    Filed: February 28, 2013
    Publication date: March 5, 2015
    Inventor: Koutarou Takazaki
  • Publication number: 20150044508
    Abstract: Provided is a rigid decorative member that has high film hardness, is excellent in scratch resistance performance and abrasion resistance performance, and has excellent color brightness and color saturation. The rigid decorative member of the present invention is a rigid decorative member wherein a reaction compound film of an alloy of Cr and a metal selected from one or two or more of Mo, W, Nb, Ta, Ti, Hf, Zr, and V, and of a non-metallic element selected from one or two or more of nitrogen, carbon, and oxygen is formed on a substrate. There is provided the rigid decorative member significantly improved in scratch resistance and abrasion resistance and having a color tone with a high quality feel; and there is further supplied a product of which the color tones of brightness and color saturation can be freely controlled.
    Type: Application
    Filed: February 28, 2013
    Publication date: February 12, 2015
    Inventor: Koutarou Takazaki
  • Publication number: 20150044453
    Abstract: A golden rigid decorative member in which scratch resistance and abrasion resistance are significantly improved and deterioration of appearance quality due to a flaw, abrasion, or the like is suppressed, and which has a pale color with a high quality feel is stably provided. A single layer or several layers of a coating including a reaction compound of an alloy of Ti and one or two or more metals selected from Nb, Ta, and V, and of one or two non-metallic elements mainly including nitrogen and selected from carbon and oxygen are stacked on a base.
    Type: Application
    Filed: February 28, 2013
    Publication date: February 12, 2015
    Inventor: Koutarou Takazaki
  • Patent number: 8568890
    Abstract: A watch cover glass having high hardness and excellent abrasion, and also having flaw resistance and antireflection function even after being used for a long period of time. The watch cover glass comprises a transparent substrate and, provided on at least one surface of the substrate, an antireflection film having a lamination structure that a SiON film (SiO2 and Si3N4 mixed film) and a Si3N4 film are laminated and the outermost layer is the SiON film. Accordingly, the proper antireflection effect can be obtained, the hardness of the antireflection film is increased and the abrasion resistance is remarkably increased. As a result, even after being used for a long period of time, the surface of the antireflection film is not finely flawed and is not peeled off, and it hardly occurs that the hands or dial plate are invisible due to surface mist and the antireflection function can be maintained.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: October 29, 2013
    Assignee: Citizen Holdings Co., Ltd.
    Inventors: Yasushi Murata, Koutarou Takazaki
  • Publication number: 20100196685
    Abstract: The present invention provides a watch cover glass having high hardness and excellent abrasion, and also having flaw resistance and antireflection function even after being used for a long period of time. [Means for Solving] The watch cover glass of the present invention comprises a transparent substrate and, provided on at least one surface of the substrate, an antireflection film having a lamination structure that a SiO2 and Si3N4 mixed film (hereinafter, referred to as SiON film) and a Si3N4 film are laminated and the outermost layer is the SiON film. According to the lamination structure, the proper antireflection effect can be obtained, the hardness of the antireflection film is increased and the abrasion resistance is remarkably increased.
    Type: Application
    Filed: September 25, 2008
    Publication date: August 5, 2010
    Applicant: CITIZEN HOLDINGS CO., LTD.
    Inventors: Yasushi Murata, Koutarou Takazaki