Patents by Inventor Tsunenori Moriyama

Tsunenori Moriyama 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 of producing porous magnesia clinker
    Patent number: 4627878
    Abstract: A method for producing a porous magnesia clinker by admixing a magnesia material having a grain size of less than 0.1 mm with from 10 to 60 percent by weight of the mixture of fluid oil coke having a grain size of 1 mm or less, calcining the resulting mixture at a temperature of from 900.degree. to 1600.degree. C. for a time sufficient to burn off the coke and thereby to form pores in the magnesia material, and firing the resulting product at a temperature of from 1600.degree. C. to 2030.degree. C. to produce porous magnesia clinker.
    Type: Grant
    Filed: April 11, 1984
    Date of Patent: December 9, 1986
    Assignees: Onoda Cement Co., Ltd., Omura Refractories Co., Ltd.
    Inventors: Hiroshi Hagiwara, Masaru Shirasaka, Tsunenori Moriyama