Patents by Inventor Masayoshi Ushikubo

Masayoshi Ushikubo 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).

  • Golden ornament and process for producing the same
    Patent number: 7771836
    Abstract: A golden ornament includes a base material; a Ti coating film which is formed on a surface of the base material in an atmosphere of an inert gas other than nitrogen and whose Ti atom content is constant in the thickness direction; a TiN gradient coating film which is formed on the Ti coating film and whose N atom content has a gradient in the thickness direction; a TiN coating film which is formed on the TiN gradient coating film and whose contents of Ti atoms and N atoms are constant in the thickness direction; an Au—TiN mixture gradient coating film which is formed on the TiN coating film and whose Au atom content has a gradient in the thickness direction; and an Au—TiN mixture coating film which is formed on the Au—TiN mixture gradient coating film and whose contents of Au atoms, Ti atoms, and N atoms are constant in the thickness direction.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: August 10, 2010
    Assignee: Citizen Holdings Co., Ltd.
    Inventors: Koichi Naoi, Fumio Tase, Yukio Miya, Osamu Tanaka, Masayoshi Ushikubo
  • Golden Ornament and Process for Producing the Same
    Publication number: 20090087634
    Abstract: A golden ornament includes a base material; a Ti coating film which is formed on a surface of the base material in an atmosphere of an inert gas other than nitrogen and whose Ti atom content is constant in the thickness direction; a TiN gradient coating film which is formed on the Ti coating film and whose N atom content has a gradient in the thickness direction; a TiN coating film which is formed on the TiN gradient coating film and whose contents of Ti atoms and N atoms are constant in the thickness direction; an Au—TiN mixture gradient coating film which is formed on the TiN coating film and whose Au atom content has a gradient in the thickness direction; and an Au—TiN mixture coating film which is formed on the Au—TiN mixture gradient coating film and whose contents of Au atoms, Ti atoms, and N atoms are constant in the thickness direction.
    Type: Application
    Filed: March 31, 2006
    Publication date: April 2, 2009
    Applicant: CITIZEN HOLDINGS CO., LTD.
    Inventors: Koichi Naoi, Fumio Tase, Yukio Miya, Osamu Tanaka, Masayoshi Ushikubo