Patents by Inventor Michiko Ohkubo

Michiko Ohkubo 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).

  • Ink-jet ink, ink-jet recording method and recorded imaging material using thereof
    Patent number: 6949135
    Abstract: An ink-jet ink comprising water, a water-soluble organic solvent and a water-soluble dye, wherein the water-soluble dye is an anthrapyridone compound represented by Formula (1) or Formula (2):
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: September 27, 2005
    Assignee: Konica Corporation
    Inventors: Daisuke Ishibashi, Emi Takayama, Michiko Ohkubo
  • Ink-jet ink, ink-jet recording method and recorded imaging material using thereof
    Publication number: 20040003754
    Abstract: An ink-jet ink comprising water, a water-soluble organic solvent and a water-soluble dye, wherein the water-soluble dye is an anthrapyridone compound represented by Formula (1) or Formula (2): 1
    Type: Application
    Filed: June 16, 2003
    Publication date: January 8, 2004
    Inventors: Daisuke Ishibashi, Emi Takayama, Michiko Ohkubo