Patents by Inventor Tomoko Segawa

Tomoko Segawa 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).

  • Steam reforming catalyst for hydrocarbon and method for manufacturing the same
    Patent number: 5075277
    Abstract: In the steam reforming catalyst for hydrocarbon according to the present invention, catalyst metal is supported on or in the surface layer of a zirconia carrier containing yttria and having a crystal structure primarily consisting of tetragonal system or tetragonal and cubic systems. Compared with conventional steam reforming catalyst, it has higher reaction efficiency and suppresses carbon deposition extensively even when steam/carbon ratio is low and exhibits higher hydrogen generation efficiency and higher catalyst strength. Particularly, it is suitable as a catalyst for internal reforming type fuel cell.In the steam reforming catalyst of hydrocarbon of this invention, metal catalyst can be effectively utilized by supporting metal catalyst only on surface layer of zirconia carrier.
    Type: Grant
    Filed: August 24, 1990
    Date of Patent: December 24, 1991
    Assignees: Tonen Corporation, Petroleum Energy Center
    Inventors: Akira Saiai, Yasuharu Yokoyama, Satoshi Sakurada, Takao Hashimoto, Tomoko Segawa, Fumiya Ishizaki