Patents Assigned to NEC CORPORATION, SUMITOMO CHEMICAL COMPANY, LIMITED
  • Publication number: 20030130147
    Abstract: A stripping composition comprising at least one of alcohols having an ether-bond in the molecule thereof as component (a), and an anticorrosive as component (b). Furfuryl alcohol or tetrahydrofurfuryl alcohol is preferable as component (a).
    Type: Application
    Filed: August 1, 2002
    Publication date: July 10, 2003
    Applicant: NEC CORPORATION, SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Tatsuya Koito, Keiji Hirano, Masayuki Takashima, Kenichi Tokioka, Hidemitsu Aoki
  • Publication number: 20010030315
    Abstract: According to the present invention, there is provided an anticorrosive treating concentrate usable for an exposed surface of a metal (e.g. copper or a copper alloy), containing an anticorrosive agent and a precipitation inhibitor and having a pH of 4 to 12 when used in the form of an aqueous solution, in which concentrate the anticorrosive agent is a triazole type compound and/or a derivative thereof and is contained in a concentration of 0.05 to 20 % by weight and the precipitation inhibitor is a compound having at least one nitrogen atom but no metal atom in the molecule.
    Type: Application
    Filed: March 5, 2001
    Publication date: October 18, 2001
    Applicant: NEC Corporation and Sumitomo Chemical Company Limited
    Inventors: Hidemitsu Aoki, Hiroaki Tomimori, Masayuki Takashima