Patents by Inventor Yoshitaka Tomohiro

Yoshitaka Tomohiro 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).

  • Method and apparatus for filtration using ferromagnetic metal fibers
    Patent number: 4495074
    Abstract: A filtrating method for removing suspended solids from a liquid by passing the liquid through a layer of filter medium in a magnetic field, the filter medium layer comprising a collection of organic fibers and ferromagnetic metal fibers. Usual suspended solids and relatively large magnetic suspended solids are arrested by the organic fibers, while fine magnetic suspended solids are arrested by the ferromagnetic metal fibers subjected to the action of the magnetic field. The collection of fibers achieves a high filtration efficiency, has outstanding regeneration characteristics, withstands continued use and is therefore very useful as a filter medium.
    Type: Grant
    Filed: August 12, 1982
    Date of Patent: January 22, 1985
    Assignee: Unitika, Ltd.
    Inventors: Michiaki Hagiwara, Yoshitaka Tomohiro