Patents by Inventor Atsushi Miyata

Atsushi Miyata 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).

  • Method for treating organic sludge
    Patent number: 5360546
    Abstract: A method for treating an organic sludge is provided which can sufficiently and efficiently solubilize an organic sludge to afford a high load of anaerobic digestion treatment with an improved digestion ratio and methane gas recovery amount thereby to widely decrease the amount of the organic sludge discharged from the method. The method includes a hot alkaline treatment for causing the organic sludge to become alkaline while maintaining the temperature of the sludge to ambient -100.degree. C. to solubilize organic matters in the sludge, and an anaerobic digestion treatment of anaerobically digesting the organic sludge after the hot alkaline treatment at a temperature of 20.degree.-60.degree. C. at a pH of 7.3-9.2.
    Type: Grant
    Filed: March 31, 1993
    Date of Patent: November 1, 1994
    Assignee: NGK Insulators, Ltd.
    Inventors: Yoshiho Tomita, Noriaki Inagaki, Atsushi Miyata, Shigehiro Suzuki