Patents by Inventor Kosuke KUMAZAKI

Kosuke KUMAZAKI 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).

  • Film-forming composition, method for producing surface-treated metal member, and method for producing metal-resin composite
    Patent number: 10883027
    Abstract: The coating film-forming composition includes an aromatic compound having an amino group and an aromatic ring in one molecule, and thio compound (sulfur oxoacids having a pKa of ?1.9 or less and salts thereof are excluded). pH of the coating film-forming composition is 4 to 10. The thio compound is preferably one that ionized to form anions in a solution, and thiosulfate and thiocyanate are especially preferable. By bringing the coating film-forming composition into contact with the surface of a metal member, a coating film is formed on the surface of the metal member, so that a surface-treated metal member can be obtained.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: January 5, 2021
    Assignee: MEC COMPANY LTD.
    Inventors: Itsuro Tomatsu, Kosuke Kumazaki, Yasutaka Amitani, Yuko Shibanuma, Ikuyo Katayama
  • FILM-FORMING COMPOSITION, METHOD FOR PRODUCING SURFACE-TREATED METAL MEMBER, AND METHOD FOR PRODUCING METAL-RESIN COMPOSITE
    Publication number: 20200157394
    Abstract: The coating film-forming composition includes an aromatic compound having an amino group and an aromatic ring in one molecule, and thio compound (sulfur oxoacids having a pKa of ?1.9 or less and salts thereof are excluded). pH of the coating film-forming composition is 4 to 10. The thio compound is preferably one that ionized to form anions in a solution, and thiosulfate and thiocyanate are especially preferable. By bringing the coating film-forming composition into contact with the surface of a metal member, a coating film is formed on the surface of the metal member, so that a surface-treated metal member can be obtained.
    Type: Application
    Filed: March 2, 2018
    Publication date: May 21, 2020
    Applicant: MEC COMPANY LTD.
    Inventors: Itsuro TOMATSU, Kosuke KUMAZAKI, Yasutaka AMITANI, Yuko SHIBANUMA, Ikuyo KATAYAMA