Patents by Inventor Shinichirou Yanagawa

Shinichirou Yanagawa 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).

  • Sulfonic acid group-containing carbonaceous material
    Patent number: 8575281
    Abstract: A sulfonic acid group-containing carbonaceous material that is useful as a solid acid catalyst for various reactions such as hydration of olefins and acidolysis reaction of hydroperoxide and also useful as a proton conductor material having excellent proton conductivity is provided. In addition, an economical and environmentally friendly method for producing methyl ethyl ketone is provided. A sulfonic acid group-containing carbonaceous material having high catalytic activities for various acid catalyst reactions and also having high proton conductivity can be obtained by carbonization and sulfonation of a phenolic resin.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: November 5, 2013
    Assignees: Nippon Oil Company, Tokyo Institute of Technology
    Inventors: Shinichirou Yanagawa, Hidesato Kondo, Michikazu Hara
  • Method for producing sulfonic acid group-containing carbonaceous material, solid acid catalyst, method for producing alkylation reaction product, and method for producing olefin polymer
    Patent number: 8017724
    Abstract: The method for producing a sulfonic acid group-containing carbonaceous material of the present invention comprises the step of carbonizing and sulfonating a polymer having a structural unit derived from resorcinol by heating in an inert gas atmosphere to obtain a sulfonic acid group-containing carbonaceous material. A catalyst comprising the resulting sulfonic acid group-containing carbonaceous material is useful for producing a target substance with high efficiency in various reactions in hydrophobic media such as alkylation reaction and polymerization reaction of olefins.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: September 13, 2011
    Assignees: Nippon Oil Corporation, Tokyo Institute of Technology
    Inventors: Shinichirou Yanagawa, Hidesato Kondo, Michikazu Hara
  • Carbon-based solid acid, catalyst comprising the solid acid, and reaction using the solid acid as catalyst
    Patent number: 8013130
    Abstract: A carbon-based solid acid which has high activity and high thermal stability and is useful as an acid catalyst for various reactions such as hydration of olefins. The carbon-based solid acid for use as a catalyst is obtained by carbonization and sulfonation of an organic substance, which has a reduction rate of 10 mol % or less of acid content as measured by immersing the solid acid in hot water at 120° C. for 2 hours, is used as the acid catalyst. The organic substance to be used as the raw material for preparing the solid acid is preferably a saccharide having ?1-4 glycosidic bond (e.g. cellulose) or lignin. Amylose is also suitable as the raw material. Examples of the reaction for which the solid catalyst can be used include hydration of olefins, etherification of olefins, and acid/alcohol esterification.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: September 6, 2011
    Assignees: Nippon Oil Corporation, Tokyo Institute of Technology
    Inventors: Shinichirou Yanagawa, Hidesato Kondo, Michikazu Hara
  • METHOD FOR PRODUCING SULFONIC ACID GROUP-CONTAINING CARBONACEOUS MATERIAL, SOLID ACID CATALYST, METHOD FOR PRODUCING ALKYLATION REACTION PRODUCT, AND METHOD FOR PRODUCING OLEFIN POLYMER
    Publication number: 20100216953
    Abstract: The method for producing a sulfonic acid group-containing carbonaceous material of the present invention comprises the step of carbonizing and sulfonating a polymer having a structural unit derived from resorcinol by heating in an inert gas atmosphere to obtain a sulfonic acid group-containing carbonaceous material. A catalyst comprising the resulting sulfonic acid group-containing carbonaceous material is useful for producing a target substance with high efficiency in various reactions in hydrophobic media such as alkylation reaction and polymerization reaction of olefins.
    Type: Application
    Filed: May 8, 2008
    Publication date: August 26, 2010
    Applicants: NIPPON OIL CORPORATION, TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Shinichirou Yanagawa, Hidesato Kondo, Michikazu Hara
  • SULFONIC ACID GROUP-CONTAINING CARBONACEOUS MATERIAL
    Publication number: 20100048835
    Abstract: A sulfonic acid group-containing carbonaceous material that is useful as a solid acid catalyst for various reactions such as hydration of olefins and acidolysis reaction of hydroperoxide and also useful as a proton conductor material having excellent proton conductivity is provided. In addition, an economical and environmentally friendly method for producing methyl ethyl ketone is provided. A sulfonic acid group-containing carbonaceous material having high catalytic activities for various acid catalyst reactions and also having high proton conductivity can be obtained by carbonization and sulfonation of a phenolic resin.
    Type: Application
    Filed: February 20, 2008
    Publication date: February 25, 2010
    Applicants: Nippon Oil Corporation, Tokyo Institute of Technology
    Inventors: Shinichirou Yanagawa, Hidesato Kondo, Michikazu Hara
  • Carbon-Based Solid Acid, Catalyst Comprising the Solid Acid, and Reaction Using the Solid Acid as Catalyst
    Publication number: 20090099345
    Abstract: A carbon-based solid acid which has high activity and high thermal stability and is useful as an acid catalyst for various reactions such as hydration of olefins. The carbon-based solid acid for use as a catalyst is obtained by carbonization and sulfonation of an organic substance, which has a reduction rate of 10 mol % or less of acid content as measured by immersing the solid acid in hot water at 120° C. for 2 hours, is used as the acid catalyst. The organic substance to be used as the raw material for preparing the solid acid is preferably a saccharide having ?1-4 glycosidic bond (e.g. cellulose) or lignin. Amylose is also suitable as the raw material. Examples of the reaction for which the solid catalyst can be used include hydration of olefins, etherification of olefins, and acid/alcohol esterification.
    Type: Application
    Filed: March 8, 2007
    Publication date: April 16, 2009
    Applicants: NIPPON OIL CORPORATION, TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Shinichirou Yanagawa, Hidesato Kondo, Michikazu Hara