Patents by Inventor Daiki Umeyama

Daiki Umeyama 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).

  • Proton conductor, method for manufacturing proton conductor, and fuel cell
    Patent number: 9178239
    Abstract: A proton conductor includes a metal ion, an oxoanion, and a molecule capable of undergoing protonation or deprotonation, in which at least one of the oxoanion and the molecule capable of undergoing protonation or deprotonation coordinates to the metal ion to form a coordination polymer. The oxoanion is preferably a monomer. The oxoanion is exemplified by at least one selected from the group consisting of phosphate ion, hydrogenphosphate ion, and dihydrogenphosphate ion. The molecule capable of undergoing protonation or deprotonation is exemplified by at least one selected from the group consisting of imidazole, triazole, benzimidazole, benzotriazole, and derivatives thereof.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: November 3, 2015
    Assignees: DENSO CORPORATION, KYOTO UNIVERSITY
    Inventors: Tomoya Itakura, Miho Ito, Susumu Kitagawa, Satoshi Horike, Daiki Umeyama, Munehiro Inukai