Patents by Inventor Katsufumi Akizuki

Katsufumi Akizuki 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 producing potassium silicate fertilizer and apparatus for practicing said process
    Patent number: 4313753
    Abstract: A process for producing a citric acid soluble potassium silicate fertilizer comprises a step for kneading a mixture consisting essentially of potassium carbonate, fly ash, pulverized coal, other necessary starting materials and a caustic potash solution as a binder and then granulating the kneaded mixture, a step for drying the granulated product to a nearly absolutely dry state, and a step for calcining the dried granular product, whereby a chemical reaction takes place between the potassium and the silicon present in fly ash to convert them into a citric acid soluble potassium silicate.
    Type: Grant
    Filed: June 13, 1979
    Date of Patent: February 2, 1982
    Assignee: Denpatsu Fly Ash Company
    Inventors: Hiroshi Segawa, Katsufumi Akizuki
  • Apparatus for producing potassium silicate fertilizer
    Patent number: 4293523
    Abstract: A process for producing a citric acid soluble potassium silicate fertilizer comprises a step for kneading a mixture consisting essentially of potassium carbonate, fly ash, pulverized coal, other necessary starting materials and a caustic potash solution as a binder and then granulating the kneaded mixture, a step for drying the granulated product to a nearly absolutely dry state, and a step for calcining the dried granular product, whereby a chemical reaction takes place between the potassium and the silicon present in fly ash to convert them into a citric acid soluble potassium silicate.
    Type: Grant
    Filed: August 12, 1980
    Date of Patent: October 6, 1981
    Assignee: Denpatsu Fly Ash
    Inventors: Hiroshi Segawa, Katsufumi Akizuki