Patents by Inventor Hiroharu Ajiro

Hiroharu Ajiro 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).

  • Polylactide derivative, method for producing same, and polylactide stereocomplex
    Patent number: 10711097
    Abstract: A polylactide derivative according to the present invention is expressed by the following general formula (1) or general formula (2): In general formula (1), one of X1-X5 is an aldehyde group, one of the other four is an alkoxy group, and the other three are hydrogen atoms. In general formula (2), one of R1-R3 is selected from a chlorine atom, fluorine atom, aldehyde group, alkoxy group, alkyl group and ester, while the other two are selected from the chlorine atom, fluorine atom, aldehyde group, alkoxy group, alkyl group, ester, and hydrogen atom.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: July 14, 2020
    Assignee: NATIONAL UNIVERSITY CORPORATION NARA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hiroharu Ajiro, Kai Kan, Mitsuru Akashi
  • POLYLACTIDE DERIVATIVE, METHOD FOR PRODUCING SAME, AND POLYLACTIDE STEREOCOMPLEX
    Publication number: 20180215867
    Abstract: A polylactide derivative according to the present invention is expressed by the following general formula (1) or general formula (2): In general formula (1), one of X1-X5 is an aldehyde group, one of the other four is an alkoxy group, and the other three are hydrogen atoms. In general formula (2), one of R1-R3 is selected from a chlorine atom, fluorine atom, aldehyde group, alkoxy group, alkyl group and ester, while the other two are selected from the chlorine atom, fluorine atom, aldehyde group, alkoxy group, alkyl group, ester, and hydrogen atom.
    Type: Application
    Filed: July 14, 2016
    Publication date: August 2, 2018
    Applicant: NATIONAL UNIVERSITY CORPORATION NARA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hiroharu AJIRO, Kai KAN, Mitsuru AKASHI
  • ISOTACTIC SPECIFIC CATALYST FOR DIRECT PRODUCTION OF HIGHLY ISOTACTIC POLY (PROPYLENE OXIDE) OR HIGHLY ISOTACTIC POLY (BUTYLENE OXIDE)
    Publication number: 20110313128
    Abstract: (Salph or methoxy salph) Co (initiating ligand) catalyze homopolymerizing rac-PO to produce pure highly isotactic PPO and rac-1-butylene oxide to produce pure isotactic poly(butylene oxide). A product is unfractionated isotactic PPO of m-dyad content>81%, normally at least 99%.
    Type: Application
    Filed: August 30, 2011
    Publication date: December 22, 2011
    Inventors: Geoffrey W. Coates, Scott D. Allen, Claire Cohen, Kathryn Peretti, Hiroharu Ajiro
  • Isotactic specific catalyst for direct production of highly isotactic poly (propylene oxide) or highly isotactic poly (butylene oxide)
    Patent number: 8026317
    Abstract: (Salph or methoxy salph) Co (initiating ligand) catalyze homopolymerizing rac-PO to produce pure highly isotactic PPO and rac-1-butylene oxide to produce pure isotactic poly(butylene oxide). A product is unfractionated isotactic PPO of m-dyad content >81%, normally at least 99%.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: September 27, 2011
    Assignee: Cornell Research Foundation, Inc.
    Inventors: Geoffrey W. Coates, Scott D. Allen, Claire Cohen, Kathryn Peretti, Hiroharu Ajiro
  • Isotactic specific catalyst for direct production of highly isotactic poly (propylene oxide) or highly isotactic poly (butylene oxide)
    Publication number: 20080262164
    Abstract: (Salph or methoxy salph) Co (initiating ligand) catalyze homopolymerizing rac-PO to produce pure highly isotactic PPO and rac-1-butylene oxide to produce pure isotactic poly(butylene oxide). A product is unfractionated isotactic PPO of m-dyad content >81%, normally at least 99%.
    Type: Application
    Filed: June 12, 2008
    Publication date: October 23, 2008
    Applicant: Cornell Research Foundation Inc.
    Inventors: Geoffrey W. Coates, Scott D. Allen, Claire Cohen, Kathryn Peretti, Hiroharu Ajiro
  • Isotactic specific catalyst for direct production of highly isotactic poly (propylene oxide) or highly isotactic poly (butylene oxide)
    Patent number: 7399822
    Abstract: (Salph or methoxy salph) Co (initiating ligand) catalyze homopolymerizing rac-PO to produce pure highly isotactic PPO and rac-1-butylene oxide to produce pure isotactic poly(butylene oxide). A product is unfractionated isotactic PPO of m-dyad content >81%, normally at least 99%.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: July 15, 2008
    Assignee: Cornell Research Foundation, Inc.
    Inventors: Geoffrey W. Coates, Scott D. Allen, Claire Cohen, Kathryn Peretti, Hiroharu Ajiro
  • Isotactic specific catalyst for direct production of highly isotactic poly (propylene oxide) or Highly isotactic poly (butylene Oxide)
    Publication number: 20060293501
    Abstract: (Salph or methoxy salph) Co (initiating ligand) catalyze homopolymerizing rac-PO to produce pure highly isotactic PPO and rac-1-butylene oxide to produce pure isotactic poly(butylene oxide). A product is unfractionated isotactic PPO of m-dyad content >81%, normally at least 99%.
    Type: Application
    Filed: June 19, 2006
    Publication date: December 28, 2006
    Applicant: Cornell Research Foundation, Inc.
    Inventors: Geoffrey Coates, Scott Allen, Claire Cohen, Kathryn Peretti, Hiroharu Ajiro