Patents by Inventor Noriaki Uchiyama

Noriaki Uchiyama 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 distillation of styrenes
    Patent number: 4615769
    Abstract: The present invention provides a process for distillation of styrenes which can be stably operated without loss of energy saving effect, by leading a part or all of low boiling point component vapor from the top to a compressor to use as a heat source for a reboiler and returning the low boiling point components condensed in the reboiler or a mixture of the condensate and a part of the uncondensed vapor to a recycling line of a distillation column.
    Type: Grant
    Filed: April 25, 1985
    Date of Patent: October 7, 1986
    Assignees: Nippon Steel Chem. Co., Ltd., Hitachi, Ltd.
    Inventors: Tsukumo Horigome, Noriyuki Kawabe, Mamoru Takiue, Kunihiko Imai, Noriaki Uchiyama, Fusayuki Tsuzuki, Kenji Shimada, Masahiro Shibuya, Norimasa Hakutoh, Chiaki Watanabe, Junichi Abe