Patents by Inventor Ryuichiro Maruyama

Ryuichiro Maruyama 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).

  • Electric energy generating element
    Publication number: 20030039878
    Abstract: An electrical energy generating device is disclosed Which is able to supply oxygen in atmospheric air efficiently to an oxygen electrode and to vaporize water yielded off efficiently, and which is superior in waterproofness. The device includes a plurality of cells each having a hydrogen electrode plate, a proton conductor film and an oxygen electrode plate, and a sheet cover 5 which is air-permeable and waterproofed and which shrouds each cell.
    Type: Application
    Filed: August 5, 2002
    Publication date: February 27, 2003
    Inventors: Mitsuaki Miyakoshi, Hiroshi Miyazawa, Tomikazu Watanabe, Kiyoshi Yamaura, Ryuichiro Maruyama, Shuichi Takizawa