Patents by Inventor Mayumi Ogura

Mayumi Ogura 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).

  • Blue colored composition for color filter and color filter
    Patent number: 7300608
    Abstract: A blue colored composition for a color filter contains a pigment carrier comprising a transparent resin, a precursor thereof or a mixture thereof, a blue pigment having a specific surface area of 90 to 140 m2/g, and a violet pigment having a specific surface area in a range of 100 to 150 m2/g, but having a greater specific surface area than that of the blue pigment used. A color filter includes a filter segment formed from the blue colored composition.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: November 27, 2007
    Assignees: Toyo Ink Mfg. Co., Ltd., Toppan Printing Co., Ltd.
    Inventors: Kenro Sunahara, Mayumi Ogura, Ichiro Toyoda, Takumi Saito, Hidesato Hagiwara, Takeshi Itoi, Hiromitsu Ito
  • Blue colored composition for color filter and color filter
    Publication number: 20050131114
    Abstract: A blue colored composition for a color filter contains a pigment carrier comprising a transparent resin, a precursor thereof or a mixture thereof, a blue pigment having a specific surface area of 90 to 140 m2/g, and a violet pigment having a specific surface area in a range of 100 to 150 m2/g, but having a greater specific surface area than that of the blue pigment used. A color filter includes a filter segment formed from the blue colored composition.
    Type: Application
    Filed: December 16, 2004
    Publication date: June 16, 2005
    Applicants: TOYO INK MFG. CO., LTD., TOPPAN PRINTING CO., LTD.
    Inventors: Kenro Sunahara, Mayumi Ogura, Ichiro Toyoda, Takumi Saito, Hidesato Hagiwara, Takeshi Itoi, Hiromitsu Ito