Patents by Inventor Mitsukazu Mukai

Mitsukazu Mukai 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 removal of mercury from waste water
    Patent number: 4599177
    Abstract: A process for the removal and recovery of mercury and, if desired, other heavy metals from incinerator waste water produced by washing waste gases from incinerators, which comprises adding to the waste water a reducing agent or a combination of oxidizing and reducing agents, subjecting the thus added waste water to stripping treatment in the presence of ferrous ion to obtain a mercury vapor-containing gas and simultaneously form spinel type crystalline compounds and then cooling said gas to separate and recover the mercury. If desired, said spinel type crystalline compounds are also removed from the mercury-free waste water.
    Type: Grant
    Filed: April 4, 1984
    Date of Patent: July 8, 1986
    Assignee: Seitetsu Kagaku Co., Ltd.
    Inventors: Saburo Hayashi, Mitsukazu Mukai, Masahiro Inoue, Hiroo Tsuchiya, Akira Otsuji, Takeo Tanabe