Patents by Inventor Kohji Nomura

Kohji Nomura 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).

  • OIL-BASED INKJET INK
    Publication number: 20120210908
    Abstract: An oil-based inkjet ink includes at least a pigment, a dispersant and an organic solvent, wherein a calcium content in the ink is 8 ppm or less, and a magnesium content in the ink is 3 ppm or less.
    Type: Application
    Filed: July 15, 2010
    Publication date: August 23, 2012
    Applicant: RISO KAGAKU CORPORATION
    Inventors: Toshihiro Endo, Masakatsu Arai, Kenji Yamada, Katsumi Kuriyama, Atsushi Tanaka, Kazuya Kawakami, Shin-ichiro Shimura, Shotaro Kon, Yoshiaki Matsuzawa, Kohji Nomura
  • AQUEOUS INKJET INK
    Publication number: 20110192318
    Abstract: A water-based inkjet ink containing at least water, a low polarity water-soluble organic solvent, a pigment and optionally a basic substance, wherein the water constitutes 60 percent by mass or less of the total quantity of the ink while the water-soluble organic solvent constitutes 15 percent by mass or more of the total quantity of the ink, the pigment includes a self-dispersible pigment that has anionic functional groups on its surface and contains, as counter ions, quaternary ammonium ions represented by the formula (1) wherein R1, R2, R3 and R4 independently represent a substituted or unsubstituted alkyl group.
    Type: Application
    Filed: October 8, 2009
    Publication date: August 11, 2011
    Inventors: Akiko Hayashi, Kohji Nomura, Sayako Arai, Yoshiaki Ishimaru, Ayako Mochizuki, Shunsuke Uozumi