Patents by Inventor Akiyosi Kohma

Akiyosi Kohma 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).

  • Rolls for hot dipping bath
    Patent number: 5391135
    Abstract: A roll for hot dipping bath includes at its outer peripheral surface at least one spiral groove for the discharge of dross. In this roll, the outer peripheral surface existing between the adjoining groove portions includes a rough surface, capable of applying a molten metal composition to a sheet of metal without transferring a groove mark to the sheet.
    Type: Grant
    Filed: April 26, 1993
    Date of Patent: February 21, 1995
    Assignees: Tocalo Co., Ltd., Kawatetsu Galvanizing Co., Ltd.
    Inventors: Nobuyuki Kuroki, Akiyosi Kohma, Hidekatu Okuma, Shoichi Fukamizu