Patents by Inventor Tamotu Kotani

Tamotu Kotani 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).

  • Process for steam reforming of hydrocarbons
    Patent number: 5685890
    Abstract: A process for steam reforming of hydrocarbons which comprises subjecting a hydrocarbon to steam reforming after desulfurizing the hydrocarbon to a sulfur content of 5 ppb or less.According to the process, a poisoning of steam reforming catalyst by sulfur can be prevented, and stable and economical operation can be attained for a long period.
    Type: Grant
    Filed: May 3, 1995
    Date of Patent: November 11, 1997
    Assignee: Osaka Gas Company Limited
    Inventors: Osamu Okada, Susumu Takami, Tamotu Kotani, Satoshi Mori, Hiroki Fujita, Naoko Fukumura, Masamichi Ippommatsu
  • Process for producing a desulfurization agent
    Patent number: 4985074
    Abstract: The present invention provides (1) a process for producing a desulfurization agent which comprises subjecting to hydrogen reduction a copper oxide-zinc oxide mixture prepared by co-precipitation process using a copper compound and a zinc compound; and (2) a process for producing a high temperature-resistant, high grade desulfurization agent which comprises subjecting to hydrogen reduction a copper oxide-zinc oxide-aluminum oxide mixture prepared by a co-precipitation process using a copper compound, a zinc compound and an aluminum compound.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: January 15, 1991
    Assignee: Osaka Gas Company Limited
    Inventors: Osamu Okada, Susumu Takami, Tamotu Kotani, Satoshi Mori, Hiroki Fujita, Naoko Fukumura, Masamichi Ippommatsu