Patents by Inventor Masahiro Zinnouti

Masahiro Zinnouti 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 phosphate conversion coating with treatment of rinse water by reverse osmosis and ion exchange
    Patent number: 4130446
    Abstract: A process for phosphate conversion coating iron and steel which includes a multi-step water rinsing stage after the conversion coating stage, which comprises subjecting a part of the rinsing water used therein to a reverse osmosis treatment, returning the concentrated liquid thereof to the conversion coating stage, and using the filtrate as replenishing water for the conversion coating and/or the degreasing and water rinsing stages after subjecting it to an ion exchange treatment.
    Type: Grant
    Filed: April 19, 1977
    Date of Patent: December 19, 1978
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Ryoichi Murakami, Masahiro Zinnouti