Patents by Inventor Eiji Endoh

Eiji Endoh 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).

  • Patent number: 10916790
    Abstract: An electrolyte membrane is prepared from a liquid composition comprising at least one member selected from the group consisting of trivalent cerium, tetravalent cerium, bivalent manganese and trivalent manganese; and a polymer with a cation-exchange group. The liquid composition is preferably one containing water, a carbonate of cerium or manganese, and a polymer with a cation-exchange group, and a cast film thereof is used as an electrolyte membrane to prepare a membrane-electrode assembly. The present invention successfully provides a membrane-electrode assembly for polymer electrolyte fuel cells being capable of generating the electric power in high energy efficiency, having high power generation performance regardless of the dew point of the feed gas, and being capable of stably generating the electric power over a long period of time.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: February 9, 2021
    Assignee: AGC INC.
    Inventors: Hisao Kawazoe, Eiji Endoh, Hideki Nakagawa, Shinji Terazono
  • Publication number: 20190067722
    Abstract: An electrolyte membrane is prepared from a liquid composition comprising at least one member selected from the group consisting of trivalent cerium, tetravalent cerium, bivalent manganese and trivalent manganese; and a polymer with a cation-exchange group. The liquid composition is preferably one containing water, a carbonate of cerium or manganese, and a polymer with a cation-exchange group, and a cast film thereof is used as an electrolyte membrane to prepare a membrane-electrode assembly. The present invention successfully provides a membrane-electrode assembly for polymer electrolyte fuel cells being capable of generating the electric power in high energy efficiency, having high power generation performance regardless of the dew point of the feed gas, and being capable of stably generating the electric power over a long period of time.
    Type: Application
    Filed: October 29, 2018
    Publication date: February 28, 2019
    Applicant: AGC INC.
    Inventors: Hisao KAWAZOE, Eiji ENDOH, Hideki NAKAGAWA, Shinji TERAZONO
  • Patent number: 10153506
    Abstract: An electrolyte membrane is prepared from a liquid composition comprising at least one member selected from the group consisting of trivalent cerium, tetravalent cerium, bivalent manganese and trivalent manganese; and a polymer with a cation-exchange group. The liquid composition is preferably one containing water, a carbonate of cerium or manganese, and a polymer with a cation-exchange group, and a cast film thereof is used as an electrolyte membrane to prepare a membrane-electrode assembly. The present invention successfully provides a membrane-electrode assembly for polymer electrolyte fuel cells being capable of generating the electric power in high energy efficiency, having high power generation performance regardless of the dew point of the feed gas, and being capable of stably generating the electric power over a long period of time.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: December 11, 2018
    Assignee: AGC INC.
    Inventors: Hisao Kawazoe, Eiji Endoh, Hideki Nakagawa, Shinji Terazono
  • Patent number: 9711817
    Abstract: A polymer electrolyte membrane which comprises a polymer electrolyte having sulfonic acid groups, and contains any one of the following (a) to (c): (a) cerium ions and an organic compound (X) capable of forming an inclusion compound with cerium ions; (b) an inclusion compound (Y) comprising the organic compound (X) including cerium ions; and (c) at least one of cerium ions and the organic compound (X), and the inclusion compound (Y).
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: July 18, 2017
    Assignee: Asahi Glass Company, Limited
    Inventors: Eiji Endoh, Yoshitaka Doi
  • Patent number: 9455465
    Abstract: An electrolyte membrane which comprises a cation exchange membrane made of a polymer having cation exchange groups and contains cerium ions is used as an electrolyte membrane for a polymer electrolyte fuel cell. In a case where the cation exchange membrane has sulfonic acid groups, the sulfonic acid groups are ion-exchanged, for example, with cerium ions so that cerium ions are contained preferably in an amount of from 0.3 to 20% of —SO3? groups contained in the cation exchange membrane. A membrane for a polymer electrolyte fuel cell capable of power generation in high energy efficiency, having high power generation performance regardless of the dew point of the feed gas and capable of stable power generation over a long period of time, can be provided.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: September 27, 2016
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Eiji Endoh, Shinji Terazono
  • Publication number: 20160197370
    Abstract: An electrolyte membrane is prepared from a liquid composition comprising at least one member selected from the group consisting of trivalent cerium, tetravalent cerium, bivalent manganese and trivalent manganese; and a polymer with a cation-exchange group. The liquid composition is preferably one containing water, a carbonate of cerium or manganese, and a polymer with a cation-exchange group, and a cast film thereof is used as an electrolyte membrane to prepare a membrane-electrode assembly. The present invention successfully provides a membrane-electrode assembly for polymer electrolyte fuel cells being capable of generating the electric power in high energy efficiency, having high power generation performance regardless of the dew point of the feed gas, and being capable of stably generating the electric power over a long period of time.
    Type: Application
    Filed: March 16, 2016
    Publication date: July 7, 2016
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Hisao KAWAZOE, Eiji ENDOH, Hideki NAKAGAWA, Shinji TERAZONO
  • Patent number: 9331354
    Abstract: An electrolyte membrane is prepared from a liquid composition comprising at least one member selected from the group consisting of trivalent cerium, tetravalent cerium, bivalent manganese and trivalent manganese; and a polymer with a cation-exchange group. The liquid composition is preferably one containing water, a carbonate of cerium or manganese, and a polymer with a cation-exchange group, and a cast film thereof is used as an electrolyte membrane to prepare a membrane-electrode assembly. The present invention successfully provides a membrane-electrode assembly for polymer electrolyte fuel cells being capable of generating the electric power in high energy efficiency, having high power generation performance regardless of the dew point of the feed gas, and being capable of stably generating the electric power over a long period of time.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: May 3, 2016
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Hisao Kawazoe, Eiji Endoh, Hideki Nakagawa, Shinji Terazono
  • Publication number: 20150200412
    Abstract: An electrolyte membrane which comprises a cation exchange membrane made of a polymer having cation exchange groups and contains cerium ions is used as an electrolyte membrane for a polymer electrolyte fuel cell. In a case where the cation exchange membrane has sulfonic acid groups, the sulfonic acid groups are ion-exchanged, for example, with cerium ions so that cerium ions are contained preferably in an amount of from 0.3 to 20% of —SO3? groups contained in the cation exchange membrane. A membrane for a polymer electrolyte fuel cell capable of power generation in high energy efficiency, having high power generation performance regardless of the dew point of the feed gas and capable of stable power generation over a long period of time, can be provided.
    Type: Application
    Filed: January 16, 2015
    Publication date: July 16, 2015
    Inventors: Eiji Endoh, Shinji Terazono
  • Patent number: 8962215
    Abstract: An electrolyte membrane which comprises a cation exchange membrane made of a polymer having cation exchange groups and contains cerium ions is used as an electrolyte membrane for a polymer electrolyte fuel cell. In a case where the cation exchange membrane has sulfonic acid groups, the sulfonic acid groups are ion-exchanged, for example, with cerium ions so that cerium ions are contained preferably in an amount of from 0.3 to 20% of —SO3? groups contained in the cation exchange membrane. A membrane for a polymer electrolyte fuel cell capable of power generation in high energy efficiency, having high power generation performance regardless of the dew point of the feed gas and capable of stable power generation over a long period of time, can be provided.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: February 24, 2015
    Assignee: Asahi Glass Company, Limited
    Inventors: Eiji Endoh, Shinji Terazono
  • Publication number: 20130309596
    Abstract: An electrolyte membrane is prepared from a liquid composition comprising at least one member selected from the group consisting of trivalent cerium, tetravalent cerium, bivalent manganese and trivalent manganese; and a polymer with a cation-exchange group. The liquid composition is preferably one containing water, a carbonate of cerium or manganese, and a polymer with a cation-exchange group, and a cast film thereof is used as an electrolyte membrane to prepare a membrane-electrode assembly. The present invention successfully provides a membrane-electrode assembly for polymer electrolyte fuel cells being capable of generating the electric power in high energy efficiency, having high power generation performance regardless of the dew point of the feed gas, and being capable of stably generating the electric power over a long period of time.
    Type: Application
    Filed: July 23, 2013
    Publication date: November 21, 2013
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Hisao KAWAZOE, Eiji Endoh, Hideki Nakagawa, Shinji Terazono
  • Patent number: 8546004
    Abstract: An electrolyte membrane is prepared from a liquid composition comprising at least one member selected from the group consisting of trivalent cerium, tetravalent cerium, bivalent manganese and trivalent manganese; and a polymer with a cation-exchange group. The liquid composition is preferably one containing water, a carbonate of cerium or manganese, and a polymer with a cation-exchange group, and a cast film thereof is used as an electrolyte membrane to prepare a membrane-electrode assembly. The present invention successfully provides a membrane-electrode assembly for polymer electrolyte fuel cells being capable of generating the electric power in high energy efficiency, having high power generation performance regardless of the dew point of the feed gas, and being capable of stably generating the electric power over a long period of time.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: October 1, 2013
    Assignee: Asahi Glass Company, Limited
    Inventors: Hisao Kawazoe, Eiji Endoh, Hideki Nakagawa, Shinji Terazono
  • Publication number: 20110262832
    Abstract: An electrolyte membrane which comprises a cation exchange membrane made of a polymer having cation exchange groups and contains cerium ions is used as an electrolyte membrane for a polymer electrolyte fuel cell. In a case where the cation exchange membrane has sulfonic acid groups, the sulfonic acid groups are ion-exchanged, for example, with cerium ions so that cerium ions are contained preferably in an amount of from 0.3 to 20% of —SO3? groups contained in the cation exchange membrane. A membrane for a polymer electrolyte fuel cell capable of power generation in high energy efficiency, having high power generation performance regardless of the dew point of the feed gas and capable of stable power generation over a long period of time, can be provided.
    Type: Application
    Filed: June 30, 2011
    Publication date: October 27, 2011
    Inventors: Eiji ENDOH, Shinji Terazono
  • Publication number: 20110212383
    Abstract: An electrolyte membrane is prepared from a liquid composition comprising at least one member selected from the group consisting of trivalent cerium, tetravalent cerium, bivalent manganese and trivalent manganese; and a polymer with a cation-exchange group. The liquid composition is preferably one containing water, a carbonate of cerium or manganese, and a polymer with a cation-exchange group, and a cast film thereof is used as an electrolyte membrane to prepare a membrane-electrode assembly. The present invention successfully provides a membrane-electrode assembly for polymer electrolyte fuel cells being capable of generating the electric power in high energy efficiency, having high power generation performance regardless of the dew point of the feed gas, and being capable of stably generating the electric power over a long period of time.
    Type: Application
    Filed: May 10, 2011
    Publication date: September 1, 2011
    Inventors: Hisao Kawazoe, Eiji Endoh, Hideki Nakagawa, Shinji Terazono
  • Patent number: 7943249
    Abstract: An electrolyte membrane is prepared from a liquid composition comprising at least one member selected from the group consisting of trivalent cerium, tetravalent cerium, bivalent manganese and trivalent manganese; and a polymer with a cation-exchange group. The liquid composition is preferably one containing water, a carbonate of cerium or manganese, and a polymer with a cation-exchange group, and a cast film thereof is used as an electrolyte membrane to prepare a membrane-electrode assembly. The present invention successfully provides a membrane-electrode assembly for polymer electrolyte fuel cells being capable of generating the electric power in high energy efficiency, having high power generation performance regardless of the dew point of the feed gas, and being capable of stably generating the electric power over a long period of time.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: May 17, 2011
    Assignee: Asahi Glass Company, Limited
    Inventors: Hisao Kawazoe, Eiji Endoh, Hideki Nakagawa, Shinji Terazono
  • Patent number: 7799468
    Abstract: An electrolyte material for polymer electrolyte fuel cells, which is made of a polymer containing repeating units based on a fluoromonomer having a radical polymerization reactivity, wherein the repeating units contain a 5-membered ring (which may contain 1 or 2 oxygen atoms), of which at least one carbon atom is contained in the main chain of the polymer, and an ionic group such as a sulfonic acid group which is bonded to the 5-membered ring directly or via a perfluoroalkylene group having a linear or branched structure; and the polymer has a softening temperature of at least 120° C.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: September 21, 2010
    Assignee: Asahi Glass Company, Limited
    Inventors: Atsushi Watakabe, Satoru Hommura, Seigo Kotera, Susumu Saito, Koichi Murata, Masanori Sawaguchi, Taiki Hoshino, Junichi Tayanagi, Eiji Endoh
  • Publication number: 20090110967
    Abstract: An electrolyte membrane for a polymer electrolyte fuel cell, which comprises an ion exchange membrane made of a fluoropolymer having a softening temperature of at least 90° C. and having acidic groups, and contains cerium atoms.
    Type: Application
    Filed: October 31, 2007
    Publication date: April 30, 2009
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Satoru Hommura, Atsushi Watakabe, Jyunichi Tayanagi, Susumu Saito, Tetsuji Shimohira, Eiji Endoh
  • Publication number: 20080118808
    Abstract: To provide an electrolyte membrane for a polymer electrolyte fuel cell, capable of generating power in high energy efficiency, having high power generation performance regardless of the dew point of the feed gas and capable of generating stable power over a long period of time. A membrane used as an electrolyte membrane for a polymer electrolyte fuel cell, which comprises a cation exchange membrane made of a fluorinated polymer having cation exchange groups and having an ion exchange capacity of from 1.0 to 2.5 meq/g dry polymer, wherein some of the cation exchange groups are ion-exchanged with at least one type of ions selected from the group consisting of cerium ions and manganese ions.
    Type: Application
    Filed: January 10, 2008
    Publication date: May 22, 2008
    Inventors: Jyunichi Tayanagi, Eiji Endoh, Hisao Kawazoe
  • Publication number: 20080118806
    Abstract: A polymer electrolyte membrane which comprises a polymer electrolyte having sulfonic acid groups, and contains any one of the following (a) to (c): (a) cerium ions and an organic compound (X) capable of forming an inclusion compound with cerium ions; (b) an inclusion compound (Y) comprising the organic compound (X) including cerium ions; and (c) at least one of cerium ions and the organic compound (X), and the inclusion compound (Y).
    Type: Application
    Filed: September 13, 2007
    Publication date: May 22, 2008
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Eiji Endoh, Yoshitaka Doi
  • Publication number: 20070111076
    Abstract: An electrolyte membrane which comprises a cation exchange membrane made of a polymer having cation exchange groups and contains manganese ions is used as an electrolyte membrane for a polymer electrolyte fuel cell. In a case where the cation exchange membrane has sulfonic acid groups, the sulfonic acid groups are ion-exchanged, for example, with manganese ions so that manganese ions are contained preferably in an amount of from 0.5 to 30% of —S03? groups contained in the cation exchange membrane.
    Type: Application
    Filed: January 11, 2007
    Publication date: May 17, 2007
    Applicant: ASAHI GLASS CO., LTD.
    Inventor: Eiji ENDOH
  • Publication number: 20070104994
    Abstract: An electrolyte membrane which comprises a cation exchange membrane made of a polymer having cation exchange groups and contains cerium ions is used as an electrolyte membrane for a polymer electrolyte fuel cell. In a case where the cation exchange membrane has sulfonic acid groups, the sulfonic acid groups are ion-exchanged, for example, with cerium ions so that cerium ions are contained preferably in an amount of from 0.3 to 20% of —SO3? groups contained in the cation exchange membrane. A membrane for a polymer electrolyte fuel cell capable of power generation in high energy efficiency, having high power generation performance regardless of the dew point of the feed gas and capable of stable power generation over a long period of time, can be provided.
    Type: Application
    Filed: December 22, 2006
    Publication date: May 10, 2007
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Eiji Endoh, Shinji Terazono