Patents by Inventor Kikuo Ando

Kikuo Ando 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 purifying silver nitrate solution using activated alumina
    Patent number: 5171559
    Abstract: A process for removing heavy metals from a silver nitrate solution is disclosed. The process comprises the step of bringing said silver nitrate solution into contact with activated alumina having a surface acidity of at least 8 and an average pore diameter of not more than 50 .ANG..
    Type: Grant
    Filed: July 19, 1991
    Date of Patent: December 15, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Kikuo Ando