Patents by Inventor Yauzo Morita

Yauzo Morita 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).

  • Method of and apparatus for analyzing nitrogen compound and phosphorus compound contained in water
    Patent number: 5567621
    Abstract: Sample water is supplied to an oxidative decomposer, heated to 90.degree. C. under presence of a photooxidation catalyst, and irradiated with ultraviolet radiation by a low pressure mercury lamp while being supplied with air, to cause photooxidative decomposition reaction. After the reaction, nitric acid ions are measured with an absorption photometer at a wavelength of 220 nm. Then, a color developer is added to the sample water, and the colored solution is employed for measurement of phosphoric ions with the absorption photometer at a wavelength of 880 nm.
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: October 22, 1996
    Assignee: Shimadzu Corporation
    Inventors: Shu Tahara, Yauzo Morita