Patents by Inventor Yusaku Noshimura

Yusaku Noshimura 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).

  • Aqueous alkali or alkaline treat and heat regeneration of NH.sub.4.sup.+ a d
    Patent number: 4219441
    Abstract: A method of regenerating zeolite by heating wherein zeolite having adsorbed (NH.sub.3 -N) in foul water has sodium hydroxide added thereto, the sodium hydroxide containing Na.sup.+ equivalent to NH.sub.4.sup.+ adsorbed to the zeolite, water is added until the total quantity of the zeolite is submerged, and the resultant zeolite is heated at 400.degree. C. for 30 minutes, whereby a regeneration rate of 90% is attained.
    Type: Grant
    Filed: November 29, 1977
    Date of Patent: August 26, 1980
    Assignee: Hitachi, Ltd.
    Inventors: Yusaku Noshimura, Yasuo Koseki, Masayoshi Kubota, Shoji Kubota, Sankichi Takahashi