Patents by Inventor Seinosuke Ando

Seinosuke Ando 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).

  • Urea-formaldehyde condensate-based slow release nitrogen fertilizer and process for producing same
    Patent number: 4596593
    Abstract: A slow release nitrogen fertilizer comprising a hydrous cured product of urea-formaldehyde condensate in which the total methylol content is 0.1 to 1.0% by weight (based on the weight of hydrous product) and the hot water-dissolution percentage [percentage of the cured product dissolved in hot water at 80.degree. C. when the product has been immersed therein for 30 minutes (based on the weight of anhydrous product)] is 10% by weight or less.
    Type: Grant
    Filed: May 22, 1984
    Date of Patent: June 24, 1986
    Assignee: Nitto Chemical Industry Co., Ltd.
    Inventors: Shunsuke Tazawa, Katsuhiko Kurihara, Yuzuru Kawagoe, Seinosuke Ando, Kazuhiko Kon