Patents by Inventor Shunai Che

Shunai Che 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).

  • Inorganic mesoporous material having chiral twisted structure and process for producing the same
    Patent number: 8063114
    Abstract: A chiral inorganic mesoporous material characterized by having a chiral twisted structure and being mesoporous; a process for producing the material; and a method of using the material. The process for inorganic mesoporous material production is a method in which one or more polymerizable inorganic monomers selected from the group consisting of polymerizable inorganic monomers and polymerizable inorganic monomers having a functional group capable of having a charge are polymerized in the presence of a solvent using as a template a self-assembly of a chiral surfactant such as an N-(higher alkanoyl)amino acid salt. Examples of the use of the inorganic mesoporous material include the separation of racemates and reaction fields for asymmetric syntheses.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: November 22, 2011
    Assignee: Japan Science and Technology Agency
    Inventors: Takashi Tatsumi, Shunai Che, Kazutami Sakamoto
  • INORGANIC MESOPOROUS MATERIAL HAVING CHIRAL TWISTED STRUCTURE AND PROCESS FOR PRODUCING THE SAME
    Publication number: 20090043003
    Abstract: A chiral inorganic mesoporous material characterized by having a chiral twisted structure and being mesoporous; a process for producing the material; and a method of using the material. The process for inorganic mesoporous material production is a method in which one or more polymerizable inorganic monomers selected from the group consisting of polymerizable inorganic monomers and polymerizable inorganic monomers having a functional group capable of having a charge are polymerized in the presence of a solvent using as a template a self-assembly of a chiral surfactant such as an N-(higher alkanoyl)amino acid salt. Examples of the use of the inorganic mesoporous material include the separation of racemates and reaction fields for asymmetric syntheses.
    Type: Application
    Filed: April 28, 2005
    Publication date: February 12, 2009
    Inventors: Takashi Tatsumi, Shunai Che, Kazutami Sakamoto
  • Mesoporous silica and process for producing the same
    Patent number: 7405315
    Abstract: (A) An anionic surfactant, (B) a silicate monomer and (C) a basic silane are mixed in water or a mixed solvent of a water-miscible organic solvent and water to obtain a mesoporous silica complex having mesopores with a uniform size, the anionic surfactant Component (A) is removed by washing the resultant mesoporous silica complex with an acidic aqueous solution, a water-miscible organic solvent or an aqueous solution thereof to obtain a mesoporous silica outer shell utilizing the structure of the mesoporous silica complex as a template, and the mesoporous silica complex or the mesoporous silica outer shell is calcined to obtain a mesoporous silica. The mesoporous silica can be synthesized in this manner utilizing the anionic surfactant micelle with a remarkably low affinity to the silicate monomer.
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: July 29, 2008
    Assignee: Ajinomoto Co., Inc.
    Inventors: Takashi Tatsumi, Hideaki Yoshitake, Toshiyuki Yokoi, Shunai Che, Kazutami Sakamoto
  • Mesoporous silica and process for producing the same
    Publication number: 20040267038
    Abstract: (A) An anionic surfactant, (B) a silicate monomer and (C) a basic silane are mixed in water or a mixed solvent of a water-miscible organic solvent and water to obtain a mesoporous silica complex having mesopores with a uniform size, the anionic surfactant Component (A) is removed by washing the resultant mesoporous silica complex with an acidic aqueous solution, a water-miscible organic solvent or an aqueous solution thereof to obtain a mesoporous silica outer shell utilizing the structure of the mesoporous silica complex as a template, and the mesoporous silica complex or the mesoporous silica outer shell is calcined to obtain a mesoporous silica. The mesoporous silica can be synthesized in this manner utilizing the anionic surfactant micelle with a remarkably low affinity to the silicate monomer.
    Type: Application
    Filed: November 20, 2003
    Publication date: December 30, 2004
    Applicant: Ajinomoto Co., Inc.
    Inventors: Takashi Tatsumi, Hideaki Yoshitake, Toshiyuki Yokoi, Shunai Che, Kazutami Sakamoto