Patents by Inventor Takayoshi Mizukami

Takayoshi Mizukami 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 regenerating absorbing solution used for exhaust gas purification
    Patent number: 4013430
    Abstract: In the process wherein industrial exhaust gases containing nitrogen oxides and SO.sub.2 are treated with an absorbing solution containing an iron chelate complex and a sulfite to remove nitrogen oxides and SO.sub.2, the absorptivity of the solution is reduced sometimes on account of dithionate formed during the treatment. The absorptivity-reduced absorbing solution is regenerated by heat-treating the solution at a pH of 3.0 or lower and a temperature of 80.degree. C or higher whereby the dithionate is decomposed.
    Type: Grant
    Filed: December 29, 1975
    Date of Patent: March 22, 1977
    Assignees: Chisso Corporation, Chisso Engineering Co. Ltd.
    Inventors: Keiji Adachi, Tokio Gorai, Kazuaki Ohami, Takehiko Takahashi, Takayoshi Mizukami