Patents by Inventor Tomohiro Uesaka

Tomohiro Uesaka 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).

  • COMPOSITION AND COMPOSITE
    Publication number: 20220143223
    Abstract: Disclosed is a composition of a polarization source dispersed in an aqueous medium. Preferably, the polarization source forms a composite with a host. As the aqueous medium, a hydrogel is also usable in addition to water.
    Type: Application
    Filed: February 28, 2020
    Publication date: May 12, 2022
    Inventors: Nobuhiro YANAI, Nobuo KIMIZUKA, Yusuke KAWASHIMA, Koki NISHIMURA, Hironori KOUNO, Saiya FUJIWARA, Kenichiro TATEISHI, Tomohiro UESAKA
  • POLARIZATION SOURCE FOR DYNAMIC NUCLEAR POLARIZATION, COMPOSITION, COMPOSITION FOR DYNAMIC NUCLEAR POLARIZATION, METHOD FOR HYPERPOLARIZATION, HYPERPOLARIZED SUBSTANCE AND NMR MEASUREMENT METHOD
    Publication number: 20220146606
    Abstract: Provided is a polarization source having high oxygen resistance and capable of stably transitioning the spin polarization of electron to nucleus even in an environment where oxygen exists. A polarization source for dynamic nuclear polarization containing a molecule represented by the following general formula. One to six of Z1 to Z10 each represent N, and the others each independently represent C—R. R represents a hydrogen atom or a substituent. n represents an integer of 1 to 4.
    Type: Application
    Filed: February 28, 2020
    Publication date: May 12, 2022
    Inventors: Nobuhiro YANAI, Nobuo KIMIZUKA, Hironori KOUNO, Yusuke KAWASHIMA, Saiya FUJIWARA, Kana ORIHASHI, Koki NISHIMURA, Kenichiro TATEISHI, Tomohiro UESAKA
  • COMPOSITION, COMPOSITION FOR DYNAMIC NUCLEAR POLARIZATION, POLARIZATION ENHANCING METHOD, HIGHLY POLARIZED SUBSTANCE, AND NMR MEASUREMENT METHOD
    Publication number: 20200289678
    Abstract: A composition containing (1) a porous material and (2) a polarization source for dynamic nuclear polarization containing a molecule capable of being in an excited triplet state. According to the composition, a dynamic nuclear polarization system that has a long spin-lattice relaxation time and can readily introduce the polarization object thereto can be provided.
    Type: Application
    Filed: October 25, 2018
    Publication date: September 17, 2020
    Inventors: Nobuhiro YANAI, Nobuo KIMIZUKA, Masanori HOSOYAMADA, Saiya FUJIWARA, Kenichiro TATEISHI, Tomohiro UESAKA
  • Nuclear spin polarization enhancing method through dynamic nuclear polarization by using soluble pentacene
    Patent number: 10564232
    Abstract: An object is to provide a method for enhancing a nuclear spin polarization. Triplet DNP where a pentacene derivative represented by the following formula (A) is used as a polarizing agent enables an effective enhancement in nuclear spin polarization to be achieved. In formula (A), each R independently represents a hydrogen atom (—H), a deuterium atom (-D), or a hydrocarbon group having 1 to 20 carbon atoms which optionally includes at least one atom selected from the group consisting of an oxygen atom, a sulfur atom and a silicon atom, provided that at least one R represents a hydrocarbon group having 1 to 20 carbon atoms which optionally includes at least one atom selected from the group consisting of an oxygen atom, a sulfur atom and a silicon atom.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: February 18, 2020
    Assignees: Riken, Osaka University
    Inventors: Kenichiro Tateishi, Tomohiro Uesaka, Makoto Negoro, Masahiro Kitagawa
  • Nuclear Spin Polarization Enhancing Method Through Dynamic Nuclear Polarization by Using Soluble Pentacene
    Publication number: 20180188338
    Abstract: An object is to provide a method for enhancing a nuclear spin polarization. Triplet DNP where a pentacene derivative represented by the following formula (A) is used as a polarizing agent enables an effective enhancement in nuclear spin polarization to be achieved. In formula (A), each R independently represents a hydrogen atom (—H), a deuterium atom (-D), or a hydrocarbon group having 1 to 20 carbon atoms which optionally includes at least one atom selected from the group consisting of an oxygen atom, a sulfur atom and a silicon atom, provided that at least one R represents a hydrocarbon group having 1 to 20 carbon atoms which optionally includes at least one atom selected from the group consisting of an oxygen atom, a sulfur atom and a silicon atom.
    Type: Application
    Filed: June 27, 2016
    Publication date: July 5, 2018
    Applicants: RIKEN, OSAKA UNIVERSITY
    Inventors: Kenichiro Tateishi, Tomohiro Uesaka, Makoto Negoro, Masahiro Kitagawa