Patents by Inventor Takufumi Fujii

Takufumi Fujii 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).

  • Novel anthrapyridone compound, water-based magenta ink composition and inkjet recording method
    Publication number: 20070062413
    Abstract: The present invention provides magenta dyestuff represented by the formula (1): (wherein symbols are as defined in the present description), with hue and vividness suitable to ink-jet recording, records excellent in fastness to light, gas, water and so on and a superior ink composition using said dyestuff.
    Type: Application
    Filed: May 20, 2004
    Publication date: March 22, 2007
    Inventors: Hiroyuki Matsumoto, Katsunori Fujii, Yasuo Shirasaki, Takufumi Fujii, Yasuo Murakami