Patents by Inventor Masatosi Furuyama

Masatosi Furuyama 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).

  • Process for producing mesophase pitch
    Patent number: 4631181
    Abstract: A mesophase pitch suitable for carbon products, particularly for carbon fibers, which has a mesophase content of at least 40%, preferably at least 60%, and a larger mesophase domain, is produced by adding at least one part by weight of at least one of an alcohol and a phenol to 100 parts by weight of heavy bitumens, subjecting the resulting mixture to pretreatment by heating at least at 250.degree. C., and then subjecting the pretreated mixture to heat treatment until mesophases are formed.
    Type: Grant
    Filed: March 28, 1985
    Date of Patent: December 23, 1986
    Assignees: Nippon Steel Corporation, Nippon Steel Chemical Co., Ltd.
    Inventors: Mitsuaki Matsumoto, Masatosi Furuyama, Tadao Tomioka, Hirofumi Sunago, Masakazu Higuchi