Patents by Inventor Nobuyoshi Nanbu

Nobuyoshi Nanbu 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).

  • Metal chelate forming fiber, process for preparing the same, and method of metal ion sequestration using said fiber
    Patent number: 6156075
    Abstract: The present invention provides a metal chelate forming fiber in which a reactive functional group in a molecule in the surface of the fiber is substituted with an acyl group represented by the following formula [1]: ##STR1## (where R.sup.1, R.sup.2, and R.sup.3 respectively are a lower alkylene group, and n is an integer of 1 to 4.) The present also provides a method for preparing the fiber, and a process for treating waste water using the fiber where metal ions contained in the waste water are allowed to be captured by the acyl group.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: December 5, 2000
    Assignees: Chelest Corporation, Chubu Chelest Co., Ltd.
    Inventors: Nobuyoshi Nanbu, Osamu Ito, Koujirou Nagatsuka