Patents by Inventor Junji Nakagi

Junji Nakagi 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 cyanuric acid from urea
    Patent number: 4474957
    Abstract: There is disclosed a process for producing cyanuric acid from urea using an external heating type reaction vessel furnished with agitator provided with plural urea supply ports in the direction of conveyance of the contents at such an interval as to make the residence time of the contents about 2 to 20 minutes, heating the urea in the presence of crude cyanuric acid to a temperature of 230.degree.-320.degree. C. to subject it to heat decomposition, and recycling a part of the formed crude cyanuric acid to the reactor.
    Type: Grant
    Filed: November 12, 1982
    Date of Patent: October 2, 1984
    Assignee: Shikoku Chemicals Corporation
    Inventors: Soichi Sato, Shuzo Maeda, Junji Nakagi