Patents by Inventor Tadahisa Miwa

Tadahisa Miwa 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).

  • Coal treatment for ash removal and agglomeration
    Patent number: 4331447
    Abstract: Coal particles can be agglomerated with simultaneous ash removal therefrom by adding an oil fraction to an aqueous slurry of coal particles which contains a surfactant and optionally an inorganic electrolyte.
    Type: Grant
    Filed: July 17, 1980
    Date of Patent: May 25, 1982
    Assignees: Sanyo Chemical Industries, Ltd., The Coal Mining Research Centre
    Inventors: Hiroshi Kamada, Kazumoto Saito, Toshiaki Murata, Tadahisa Miwa, Masao Goto, Toshiro Fukuda, Hitoshi Taguchi