Patents by Inventor Sadao Hayata

Sadao Hayata 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).

  • Adsorbent, method for producing same, and method for processing oil-containing waste water
    Patent number: 7666306
    Abstract: The present invention provides an adsorbent comprising calcined coke with a BET surface area of 20 m2/g or less which is obtained by calcining a particular carbonaceous material at 1000 to 1500° C. and which is preferably obtained by calcining coal coke, petroleum coke or charcoal coke at 1000 to 1500° C. The adsorbent of the present invention exhibits adequate adsorbent ability with respect to an oil component in oil-containing wastewater even when the oil-containing wastewater is an emulsion or contains a low concentration of the oil component, and also stably maintains the adsorbent ability over a long period of time.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: February 23, 2010
    Assignee: Nippon Petroleum Refining Co., Ltd.
    Inventors: Nobuo Fukuda, Sadao Hayata, Takashi Oyama, Akira Ino
  • Adsorbent,Method for Producing Same, and Method for Processing Oil-Containing Waste Water
    Publication number: 20080210637
    Abstract: The present invention provides an adsorbent comprising calcined coke with a BET surface area of 20 m2/g or less which is obtained by calcining a particular carbonaceous material at 1000 to 1500° C. and which is preferably obtained by calcining coal coke, petroleum coke or charcoal coke at 1000 to 1500° C. The adsorbent of the present invention exhibits adequate adsorbent ability with respect to an oil component in oil-containing wastewater even when the oil-containing wastewater is an emulsion or contains a low concentration of the oil component, and also stably maintains the adsorbent ability over a long period of time.
    Type: Application
    Filed: September 6, 2005
    Publication date: September 4, 2008
    Inventors: Nobuo Fukuda, Sadao Hayata, Takashi Oyama, Akira Ino