Patents by Inventor Koji NUMASAWA

Koji NUMASAWA 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).

  • DEEP RED FLUORESCENT PROBE
    Publication number: 20200087326
    Abstract: A near-infrared fluorescent probe has fluorescence in the near-infrared region. Like CaSiR-1, the probe has rhodamines as the fluorescent mother nucleus and accumulates in the cytoplasm. The probe makes it possible to visualize concentration fluctuations in metal ions, such as calcium ions, within the body.
    Type: Application
    Filed: December 1, 2017
    Publication date: March 19, 2020
    Inventors: Kenjiro HANAOKA, Yasuteru URANO, Koji NUMASAWA, Takayuki IKENO, Yuki HOSHINO
  • Asymmetrical Si rhodamine and rhodol synthesis
    Patent number: 9714260
    Abstract: [Problem] To provide: a compound resulting from substituting with a silicon atom the oxygen atom at position 10 of a xanthene ring site of a rhodamine of which amino groups at position 3 and position 6 have an asymmetrical structure; a method for producing the compound; and a fluorescent probe that uses the compound. [Solution] The compound represented by general formula (I) or a salt thereof.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: July 25, 2017
    Assignee: THE UNIVERSITY OF TOKYO
    Inventors: Tetsuo Nagano, Kenjiro Hanaoka, Takahiro Egawa, Yu Kushida, Koji Numasawa, Takuya Myochin, Wen Piao
  • ASYMMETRICAL SI RHODAMINE AND RHODOL SYNTHESIS
    Publication number: 20150353585
    Abstract: [Problem] To provide: a compound resulting from substituting with a silicon atom the oxygen atom at position 10 of a xanthene ring site of a rhodamine of which amino groups at position 3 and position 6 have an asymmetrical structure; a method for producing the compound; and a fluorescent probe that uses the compound. [Solution] The compound represented by general formula (I) or a salt thereof.
    Type: Application
    Filed: January 7, 2014
    Publication date: December 10, 2015
    Applicant: THE UNIVERSITY OF TOKYO
    Inventors: Tetsuo NAGANO, Kenjiro HANAOKA, Takahiro EGAWA, Yu KUSHIDA, Koji NUMASAWA, Takuya MYOCHIN, Wen PIAO