Patents Assigned to GENERAL TECHNOLOGY COMPANY LIMITED
  • Publication number: 20090053415
    Abstract: The invention provides an ink composition comprising a silver colloid and an antitarnish agent for preventing discoloration of silver. Despite the use of a silver colloid which is likely to discolor, as a colorant, discoloration of the printing face in a relatively short period can be prevented, and good metal gloss of the printing face can be maintained over a longer period of time than that attained by the prior art technique.
    Type: Application
    Filed: April 14, 2005
    Publication date: February 26, 2009
    Applicant: GENERAL TECHNOLOGY COMPANY LIMITED
    Inventor: Kozo Isobe