Patents by Inventor Masayasu Taki

Masayasu Taki 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).

  • Phosphole compound
    Patent number: 11174389
    Abstract: A phosphole compound represented by the formula (wherein Ar1 and Ar2 are the same or different, and represent an optionally substituted aromatic hydrocarbon ring or an optionally substituted heteroaromatic ring; Ar3 represents a divalent ?-conjugated unit; R1 represents an optionally substituted alkyl group, an optionally substituted cycloalkyl group, an optionally substituted aryl group, or an optionally substituted heteroaryl group; R2 and R3 are the same or different, and represent a hydrogen atom, an optionally substituted alkyl group, an optionally substituted cycloalkyl group, an optionally substituted aryl group, or an optionally substituted heteroaryl group; and Z represents a reactive group) can provide a fluorescent dye capable of maintaining a high fluorescence quantum yield irrespective of solvent polarity, and providing an improved fluorescence quantum yield and light resistance even in environments containing large amounts of water.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: November 16, 2021
    Assignee: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY
    Inventors: Shigehiro Yamaguchi, Aiko Naka, Masayasu Taki, Chenguang Wang
  • PHOSPHOLE COMPOUND
    Publication number: 20190264031
    Abstract: A phosphole compound represented by the formula (wherein Ar1 and Ar2 are the same or different, and represent an optionally substituted aromatic hydrocarbon ring or an optionally substituted heteroaromatic ring; Ar3 represents a divalent ?-conjugated unit; R1 represents an optionally substituted alkyl group, an optionally substituted cycloalkyl group, an optionally substituted aryl group, or an optionally substituted heteroaryl group; R2 and R3 are the same or different, and represent a hydrogen atom, an optionally substituted alkyl group, an optionally substituted cycloalkyl group, an optionally substituted aryl group, or an optionally substituted heteroaryl group; and Z represents a reactive group) can provide a fluorescent dye capable of maintaining a high fluorescence quantum yield irrespective of solvent polarity, and providing an improved fluorescence quantum yield and light resistance even in environments containing large amounts of water.
    Type: Application
    Filed: July 24, 2017
    Publication date: August 29, 2019
    Inventors: Shigehiro YAMAGUCHI, Aiko NAKA, Masayasu TAKI, Chenguang WANG
  • Zinc-chelating ratiometric fluorescent probes and related methods
    Patent number: 7262301
    Abstract: Benzoxazole fluorescent sensor compounds and related ratiometric imaging methods for zinc metal ion.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: August 28, 2007
    Assignee: Northwestern University
    Inventors: Thomas V. O'Halloran, Masayasu Taki
  • Zinc-chelating ratiometric fluorescent probes and related methods
    Patent number: 7105680
    Abstract: Benzoxazole fluorescent sensor compounds and related ratiometric imaging methods for zinc metal ion.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: September 12, 2006
    Assignee: Northwestern University
    Inventors: Thomas V. O'Halloran, Masayasu Taki