Patents by Inventor Kimio Yokoyama

Kimio Yokoyama 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 for cold rolling and cleaning steel plates
    Patent number: 4344308
    Abstract: A cleaning method for steel plates is disclosed for removing rolling oil and metal powders by spraying highly pressurized cleaning solution on both surfaces of strip steel plates immediately before and/or after the final step in the cold-rolling process of the strip steel plates. The cleaning may be performed with efficiency by mixing abrasive grains, a rust inhibitor, a surface active agent or the like in the cleaning solution.
    Type: Grant
    Filed: July 23, 1980
    Date of Patent: August 17, 1982
    Assignee: Nihon Parkerizing Co., Ltd.
    Inventors: Shoji Shimada, Sakae Sonoda, Kimio Yokoyama