Patents by Inventor Aya Katoh

Aya Katoh 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).

  • Thermally sensitive recording medium
    Patent number: 7312176
    Abstract: A thermally sensitive recording medium including on a support a thermally sensitive color development layer containing: a compound represented by the following general formula (1) as an organic color developing agent; and an oxalate compound represented by the following general formula (2) as a sensitizer. (In the formula (1): M represents CO or NRCO; when M is CO, m1 is 1; and when m1 is 0 and M is NRCO, B is not 0.
    Type: Grant
    Filed: October 24, 2003
    Date of Patent: December 25, 2007
    Assignee: Nippon Paper Industries Co., Ltd.
    Inventors: Kaoru Hamada, Kenji Hirai, Takanori Otsuhata, Takashi Date, Junpei Natsui, Yoshihide Kimura, Aya Katoh
  • Heat-sensitive recording medium
    Publication number: 20060125909
    Abstract: A thermally sensitive recording medium including on a support a thermally sensitive color development layer containing: a compound represented by the following general formula (1) as an organic color developing agent; and an oxalate compound represented by the following general formula (2) as a sensitizer. (In the formula (1): M represents CO or NRCO; when M is CO, m1 is 1; and when m1 is 0 and M is NRCO, B is not 0.
    Type: Application
    Filed: October 24, 2003
    Publication date: June 15, 2006
    Inventors: Kaoru Hamada, Kenji Hirai, Takanori Otsuhata, Takashi Date, Junpei Natsui, Yoshihide Kimura, Aya Katoh