Patents by Inventor Masahiko Shishido

Masahiko Shishido 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).

  • Polynucleotide cleavage agent switched on by photo irradiation
    Patent number: 7098245
    Abstract: The present invention provides a polynucleotide cleavage agent switched on by photo-irradiation and a method of cleaving or decomposing a polynucleotide such as DNA or RNA using this agent switched on in this manner. More specifically, said polynucleotide cleavage agent switched on by photo-irradiation comprises cyclopropane or a 2,2-dihalogeno-cyclopropane ring between “A” unit and “B” unit, wherein said “A” unit is an aromatic group having an electron withdrawing property and is excited by photo-irradiation, and said “B” unit is a hydrophilic functional group. Said polynucleotide cleavage agent may further contain “C” unit which can recognize DNA sequences, and also a spacer molecule, if desired.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: August 29, 2006
    Assignee: Tottori University
    Inventors: Toshiyuki Itoh, Keiko Ninomiya, Masahiko Shishido
  • Polynucleotide cleavage agent switched on by photo irradiation
    Publication number: 20040058346
    Abstract: The present invention provides a polynucleotide cleavage agent switched on by photo-irradiation and a method of cleaving or decomposing a polynucleotide such as DNA or RNA using this agent switched on in this manner. More specifically, said polynucleotide cleavage agent switched on by photo-irradiation comprises cyclopropane or a 2,2-dihalogeno-cyclopropane ring between “A” unit and “B” unit, wherein said “A” unit is an aromatic group having an electron withdrawing property and is excited by photo-irradiation, and said “B” unit is a hydrophilic functional group. Said polynucleotide cleavage agent may further contain “C” unit which can recognize DNA sequences, and also a spacer molecule, if desired.
    Type: Application
    Filed: March 5, 2003
    Publication date: March 25, 2004
    Applicant: TOTTORI UNIVERSITY
    Inventors: Toshiyuki Itoh, Keiko Ninomiya, Masahiko Shishido