Patents by Inventor Mitsuru Aoyagi

Mitsuru Aoyagi 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).

  • Method for separating and recovering lignin derivatives
    Patent number: 8012356
    Abstract: An object of the present invention is to provide a technique for separation/collection of a lignin derivative which is useful for the separation of a lignin derivative having a 1,1-diphenylpropane unit and/or a unit derived from the 1,1-diphenylpropane unit from a mixture system containing the lignin derivative. In the Present invention, a lignin derivative having a 1,1-diphenylpropane unit and/or a unit derived from the 1,1-dipheylpropane unit is allowed to contact with a metal oxide in a liquid medium, thereby separating the lignin derivative in the form retained on the metal oxide.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: September 6, 2011
    Assignee: Japan Science and Technology Agency
    Inventors: Masamitsu Funaoka, Mitsuru Aoyagi
  • Method for separating and recovering lignin derivatives
    Patent number: 7922912
    Abstract: An object of the present invention is to provide a technique for separation/collection of a lignin derivative which is useful for the separation of a lignin derivative having a 1,1-diphenylpropane unit and/or a unit derived from the 1,1-diphenylpropane unit from a mixture system containing the lignin derivative. In the Present invention, a lignin derivative having a 1,1-diphenylpropane unit and/or a unit derived from the 1,1-dipheylpropane unit is allowed to contact with a metal oxide in a liquid medium, thereby separating the lignin derivative in the form retained on the metal oxide.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: April 12, 2011
    Assignee: Japan Science and Technology Agency
    Inventors: Masamitsu Funaoka, Mitsuru Aoyagi
  • Electrically conductive polyaniline composition, process for producing the same and polyaniline dopant
    Patent number: 7824577
    Abstract: The invention provides a polyaniline dopant which has small environmental load and from which an electrically conductive polyaniline having better processability on polyaniline can be obtained. A phenol derivative of lignin having a bis(aryl)propane unit in which a carbon atom on an ortho-position and/or a para-position relative to a phenolic hydroxy group of a phenol compound is bound to a carbon atom on a C1-position of an aryl propane unit of lignin is used as a polyaniline dopant. Since a phenol derivative of lignin is derived from a source that can be recycled, the dopant is a polyaniline dopant having small environmental load.
    Type: Grant
    Filed: March 10, 2005
    Date of Patent: November 2, 2010
    Assignee: Japan Science and Technology Agency
    Inventors: Masamitsu Funaoka, Mitsuru Aoyagi, Isao Murakumo
  • Method for separating and recovering lignin derivatives
    Publication number: 20090209739
    Abstract: An object of the present invention is to provide a technique for separation/collection of a lignin derivative which is useful for the separation of a lignin derivative having a 1,1-diphenylpropane unit and/or a unit derived from the 1,1-diphenylpropane unit from a mixture system containing the lignin derivative. In the Present invention, a lignin derivative having a 1,1-diphenylpropane unit and/or a unit derived from the 1,1-dipheylpropane unit is allowed to contact with a metal oxide in a liquid medium, thereby separating the lignin derivative in the form retained on the metal oxide.
    Type: Application
    Filed: June 6, 2006
    Publication date: August 20, 2009
    Applicant: Japan Science and Technology Agency
    Inventors: Masamitsu Funaoka, Mitsuru Aoyagi
  • Electrically Conductive Polyaniline Composition, Process for Producing the Same and Polyaniline Dopant
    Publication number: 20080017832
    Abstract: The invention provides a polyaniline dopant which has small environmental load and from which an electrically conductive polyaniline having better processability on polyaniline can be obtained. A phenol derivative of lignin having a bis(aryl)propane unit in which a carbon atom on an ortho-position and/or a para-position relative to a phenolic hydroxy group of a phenol compound is bound to a carbon atom on a C1-position of an aryl propane unit of lignin is used as a polyaniline dopant. Since a phenol derivative of lignin is derived from a source that can be recycled, the dopant is a polyaniline dopant having small environmental load.
    Type: Application
    Filed: March 10, 2005
    Publication date: January 24, 2008
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Masamitsu Funaoka, Mitsuru Aoyagi, Isao Murakumo
  • Application of lignin derivatives to photoelectric transducer and photoelectrochemical cell
    Patent number: 7282636
    Abstract: The invention regards application of lignin derivatives to a photoelectric transducer.
    Type: Grant
    Filed: August 9, 2005
    Date of Patent: October 16, 2007
    Assignee: Japan Science and Technology Agency
    Inventors: Masamitsu Funaoka, Mitsuru Aoyagi
  • Application of lignin derivatives to photoelectric transducer and photoelectrochemical cell
    Publication number: 20060035392
    Abstract: The invention regards application of lignin derivatives to a photoelectric transducer.
    Type: Application
    Filed: August 9, 2005
    Publication date: February 16, 2006
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Masamitsu Funaoka, Mitsuru Aoyagi