Patents by Inventor Ai Sakuma

Ai Sakuma 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 and ink jet recording method
    Patent number: 9365733
    Abstract: An ink jet ink including water, a pigment and a polymer. The pigment has a secondary amino group. The polymer contains a unit derived from a monomer having a ring structure containing a tertiary amino group.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: June 14, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuhiro Hayashi, Ikuo Nakazawa, Ryota Takeuchi, Hideyuki Saito, Shigemoto Abe, Taro Endo, Ai Sakuma, Naofumi Shimomura
  • INK JET INK AND INK JET RECORDING METHOD
    Publication number: 20150191615
    Abstract: An ink jet ink including water, a pigment and a polymer. The pigment has a secondary amino group. The polymer contains a unit derived from a monomer having a ring structure containing a tertiary amino group.
    Type: Application
    Filed: December 15, 2014
    Publication date: July 9, 2015
    Inventors: Katsuhiro Hayashi, Ikuo Nakazawa, Ryota Takeuchi, Hideyuki Saito, Shigemoto Abe, Taro Endo, Ai Sakuma, Naofumi Shimomura