Patents by Inventor Hidemi Murata

Hidemi Murata 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 pitch-type carbon fibers
    Patent number: 4923692
    Abstract: A process for producing pitch-type carbon fibers, which comprises melt-spinning pitch material in a gaseous atmosphere to form pitch fibers, gathering the pitch fibers in the presence of an oiling agent into a tow, followed by infusible treatment, carbonization treatment and, if necessary, graphitization treatment, of the tow of pitch fibers, characterized in that the tow of pitch fibers is brought in contact with a washing liquid to wash the surface of the pitch fibers prior to the infusible treatment.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: May 8, 1990
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Akira Nakagoshi, Hiroshi Tahara, Tetuo Yamada, Hiroyuki Sekiguchi, Hidemi Murata
  • Horizontal type coke ovens
    Patent number: 4216060
    Abstract: In a horizontal type coke oven, high temperature waste gas generated in a heating flue chamber and containing nitrogen oxides is discharged into a regenerator. There are provided nozzle openings for injecting ammonia or ammonia precursor to the high temperature waste gas at a position where the temperature of the waste gas is about 750.degree.-1000.degree. C. so as to reduce the nitrogen oxides in the waste gas with the ammonia or ammonia precursor.
    Type: Grant
    Filed: May 10, 1978
    Date of Patent: August 5, 1980
    Assignee: Mitsubishi Kasei Kogyo Kabushiki Kaisha
    Inventors: Hidemi Murata, Koretoshi Fujishiro, Shunsaku Hiraga, Masamitu Hiyoshi