Patents by Inventor Hideki Yorimitsu

Hideki Yorimitsu 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).

  • CARBON NANOHORN MRI CONTRAST AGENTS
    Publication number: 20120058053
    Abstract: A contrast agent characterized in that each of carbon nanohorns forming a carbon nanohorn aggregate has an opening at the side wall or tip, wherein a metal M (at least one metal selected from among paramagnetic metals, ferromagnetic metals, and superparamagnetic metals) or a compound of the metal M is incorporated in or dispersed on each of the carbon nanohorns. A contrast agent characterized in that it contains a Gd oxide. There is provided a contrast agent, which can be mass-produced easily, and satisfies the requirement of low toxicity and enables microscopic diagnoses when used for MRI. A contrast agent characterized in that is contains a carbon nanohorn aggregate.
    Type: Application
    Filed: November 14, 2011
    Publication date: March 8, 2012
    Inventors: Sumio Iijima, Jin Miyawaki, Masako Yudasaka, Eiichi Nakamura, Hiroyuki Isobe, Hideki Yorimitsu, Hideto Imai
  • Substance-containing carbon nanohorn composite having polyamine plug and process for producing the same
    Patent number: 8084505
    Abstract: The present invention provides: a carbon nanohorn composite including a carbon nanohorn, a substance encapsulated in the carbon nanohorn, and a polyamine adsorbed by chemical reaction firmly to a surface functional group present on the opening part on the surface of the carbon nanohorn, wherein the release amount and release rate of the encapsulated substance can be controlled using the difference in size, substituent or three-dimensional structure of the polyamine, which is used as a plug; a method of controlling the release of the encapsulated substance; and a process for producing the carbon nanohorn composite. The release amount and release rate of the substance encapsulated in the carbon nanohorn composite is controlled by selecting a polyamine molecule, which plugs the opening part formed in the carbon nanohorn by oxidation, by its size, substituent or three-dimensional structure.
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: December 27, 2011
    Assignee: NEC Corporation
    Inventors: Ryota Yuge, Hideki Yorimitsu, Masako Yudasaka, Sumio Iijima
  • O-labeled monosaccharide and producing method thereof
    Patent number: 7883687
    Abstract: This invention relates to novel 15O-labeled monosaccharide useful for positron emission tomography (PET) and producing method thereof.
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: February 8, 2011
    Assignees: Astellas Pharma Inc.
    Inventors: Eiichi Nakamura, Shintaro Nishimura, Yoshihiro Murakami, Hideki Yorimitsu
  • SUBSTANCE-CONTAINING CARBON NANOHORN COMPOSITE HAVING POLYAMINE PLUG AND PROCESS FOR PRODUCING THE SAME
    Publication number: 20090208567
    Abstract: The present invention provides: a carbon nanohorn composite including a carbon nanohorn, a substance encapsulated in the carbon nanohorn, and a polyamine adsorbed by chemical reaction firmly to a surface functional group present on the opening part on the surface of the carbon nanohorn, wherein the release amount and release rate of the encapsulated substance can be controlled using the difference in size, substituent or three-dimensional structure of the polyamine, which is used as a plug; a method of controlling the release of the encapsulated substance; and a process for producing the carbon nanohorn composite. The release amount and release rate of the substance encapsulated in the carbon nanohorn composite is controlled by selecting a polyamine molecule, which plugs the opening part formed in the carbon nanohorn by oxidation, by its size, substituent or three-dimensional structure.
    Type: Application
    Filed: July 3, 2007
    Publication date: August 20, 2009
    Applicant: NEC
    Inventors: Ryota Yuge, Hideki Yorimitsu, Masako Yudasaka, Sumio Iijima
  • SUBSTANCE-ENCAPSULATED CARBON NANOHORN COMPLEX AND PRODUCING METHOD THEREOF
    Publication number: 20090036549
    Abstract: A cap of polyamine molecules is provided on an aperture portion of carbon nanohorns having apertures formed by oxidation. The polyamine cap opens and closes according to the pH of the ambient environment, thereby controlling release of an encapsulation substance.
    Type: Application
    Filed: February 2, 2007
    Publication date: February 5, 2009
    Applicants: NEC CORPORATION, KYOTO UNIVERSITY
    Inventors: Ryota Yuge, Masako Yudasaka, Sumio Iijima, Hideki Yorimitsu
  • Contrast Agent
    Publication number: 20080152593
    Abstract: A contrast agent characterized in that each of carbon nanohorns forming a carbon nanohorn aggregate has an opening at the side wall or tip, wherein a metal M (at least one metal selected from among paramagnetic metals, ferromagnetic metals, and superparamagnetic metals) or a compound of the metal M is incorporated in or dispersed on each of the carbon nanohorns. A contrast agent characterized in that it contains a Gd oxide. There is provided a contrast agent, which can be mass-produced easily, and satisfies the requirement of low toxicity and enables microscopic diagnoses when used for MRI. A contrast agent characterized in that is contains a carbon nanohorn aggregate.
    Type: Application
    Filed: December 21, 2005
    Publication date: June 26, 2008
    Applicants: Japan Science And Technology Agency, NEC Corporation
    Inventors: Sumio Iijima, Jin Miyawaki, Masako Yudasaka, Eiichi Nakamura, Hiroyuki Isobe, Hideki Yorimitsu, Hideto Imai
  • Novel 150-Labeled Monosaccharide and Producing Method Thereof
    Publication number: 20070224120
    Abstract: This invention relates to novel 15O-labeled monosaccharide useful for positron emission tomography (PET) and producing method thereof.
    Type: Application
    Filed: March 28, 2005
    Publication date: September 27, 2007
    Applicant: Astellas Pharma Inc.
    Inventors: Eiichi Nakamura, Shintaro Nishimura, Yoshihiro Murakami, Hideki Yorimitsu