Patents by Inventor Jojiro NIGORO

Jojiro NIGORO 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).

  • WASHING SOLUTION FOR SURFACE OF ELECTROLESS TIN PLATING FILM, REPLENISHING SOLUTION FOR SAID WASHING SOLUTION, AND METHOD FOR FORMING TIN PLATING LAYER
    Publication number: 20170342566
    Abstract: The invention relates to a washing solution for a tin plating film after electroless tin plating and before water washing. The invention also relates to a method for forming a tin plating film, the method includes a step of washing step using the washing solution. The washing solution according to the present invention is an acidic aqueous solution containing an acid, a complexing agent, a stabilizer and a chloride ion. The washing solution has a chloride ion concentration of 2 wt % or more, and a tin concentration of 0.5 wt % or less. The washing solution according to the present invention has good washing property for a tin plating film surface, and allows a tin plating film to easily maintain its properties. In addition the washing solution causes little influence on a tin plating film surface even when continuously used and is excellent in temporal stability.
    Type: Application
    Filed: September 17, 2015
    Publication date: November 30, 2017
    Applicant: MEC COMPANY LTD.
    Inventors: Yuko SHIBANUMA, Tatsuya GODA, Jojiro NIGORO, Tomoko ICHIHASHI, Keisuke JOKO, Takahiro YAMADA, Tsuyoshi AMATANI