Patents by Inventor Hiroshi Matuda

Hiroshi Matuda 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 nitrous oxide
    Patent number: 4376105
    Abstract: Nitrous oxide having a high purity is produced by reacting urea, nitric acid and sulfuric acid at a temperature of 40.degree. through 100.degree. C., and isolating the resultant nitrous oxide from the reaction gas mixture, without any danger of, for example, explosion during the reaction and without using expensive catalysts and sulfamic acid.
    Type: Grant
    Filed: September 3, 1981
    Date of Patent: March 8, 1983
    Assignee: Ube Industries, Ltd.
    Inventors: Hiroshi Matuda, Takamoto Nishimura, Yoshiyuki Tanaka, Yoshihiko Hatabu