Patents by Inventor Hideki Haji

Hideki Haji 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 of dehydrating organic sludge
    Patent number: 4221661
    Abstract: A method of dehydrating an organic sludge, which comprises adjusting the pH value of a sludge having a solids concentration in the range of from 0.5 to 8% by weight, to a pH of 5 or less, heating the thus adjusted sludge, mixing with the sludge an oxidizer capable of displaying oxidation ability within the acid region, and dewatering the sludge with a dehydrator.
    Type: Grant
    Filed: August 24, 1978
    Date of Patent: September 9, 1980
    Assignee: Kurita Water Industries Ltd.
    Inventors: Tohru Shimizu, Hideki Haji, Fujiaki Mochizuki