Patents by Inventor Keiji Tanino

Keiji Tanino 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).

  • Compound having fluorescent chromophore, ion concentration sensor including compound, reagent including compound, reagent kit provided with reagent, precursor of compound, and method for synthesizing compound
    Patent number: 9222016
    Abstract: A compound of the present invention comprises a triazapentalene backbone represented by the general formula 1 below as a fluorescent chromophore.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: December 29, 2015
    Assignee: National University Corporation Hokkaido University
    Inventors: Kosuke Namba, Ayumi Osawa, Keiji Tanino
  • Protein phosphatase inhibitor
    Patent number: 8759323
    Abstract: Provided is a novel protein phosphatase inhibitor. The protein phosphatase inhibitor contains, as an active ingredient, a silicon compound represented by the following general formula (1) or a salt thereof, wherein R1, R2 and R3 are the same or different and represent a hydrocarbon group having 1 to 12 carbon atoms; X represents an optionally substituted hydrocarbon group having 3 to 36 carbon atoms or an optionally substituted heterocyclic group; and n represents an integer of 0 or 1.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: June 24, 2014
    Assignee: LSIP, LLC
    Inventors: Kazuyasu Sakaguchi, Keiji Tanino, Yoshiro Chuman, Fumihiko Yoshimura, Hiroaki Yagi
  • Compound Having Fluorescent Chromophore, Ion Concentration Sensor Including Compound, Reagent Including Compound, Reagent Kit Provided with Reagent, Precursor of Compound, and Method for Synthesizing Compound
    Publication number: 20140005410
    Abstract: A compound of the present invention comprises a triazapentalene backbone represented by the general formula 1 below as a fluorescent chromophore.
    Type: Application
    Filed: March 8, 2012
    Publication date: January 2, 2014
    Applicant: NATIONAL UNIVERSITY CORPORATION, HOKKAIDO UNIVERSITY
    Inventors: Kosuke Namba, Ayumi Osawa, Keiji Tanino
  • PROTEIN PHOSPHATASE INHIBITOR
    Publication number: 20110288050
    Abstract: Provided is a novel protein phosphatase inhibitor. The protein phosphatase inhibitor contains, as an active ingredient, a silicon compound represented by the following general formula (1) or a salt thereof, wherein R1, R2 and R3 are the same or different and represent a hydrocarbon group having 1 to 12 carbon atoms; X represents an optionally substituted hydrocarbon group having 3 to 36 carbon atoms or an optionally substituted heterocyclic group; and n represents an integer of 0 or 1.
    Type: Application
    Filed: October 2, 2009
    Publication date: November 24, 2011
    Applicant: LSIP, LLC
    Inventors: Kazuyasu Sakaguchi, Keiji Tanino, Yoshiro Chuman, Fumihiko Yoshimura, Hiroaki Yagi
  • Process for Production of Cyclopentenenitrile Derivatives
    Publication number: 20070219389
    Abstract: [Problems] To provide a process for the synthesis of cyclopentenenitrile derivatives through conjugate addition of a nitrile derivative to an ?,?-unsaturated ketone whereby cyclopentenenitrile derivatives, particularly those capable of optical resolution, can be obtained in high yield without expensive reagents or compounds in a decreased number of steps. [Means for Solving Problems] A novel process for the production of cyclopentenenitrile derivatives in high yield, which comprises trapping a compound obtained by conjugate addition of a 4-alkoxy-3-butenenitrile which may have alkyl or allyl at the ?-position (e.g., 4-methoxy-3-butenenitrile) to an ?,?-unsaturated ketone as an enol ester with acetic anhydride, chlorocarbonic ester, or the like and treating the enol ester with a strong acid or the like to form a five-membered ring.
    Type: Application
    Filed: March 7, 2005
    Publication date: September 20, 2007
    Applicant: Japan Science and Technology Agency
    Inventors: Masaaki Miyashita, Keiji Tanino, Yoshihide Tomata, Yasuhiro Shiina