Patents by Inventor Nobuyasu Ohshio

Nobuyasu Ohshio 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 isomerizing light hydrocarbon oil
    Patent number: 6673233
    Abstract: A process for isomerizing a light hydrocarbon oil which comprises: subjecting the light hydrocarbon oil to a hydrogenation treatment for converting an organosulfur component in the light hydrocarbon oil into hydrogen sulfide to give an organosulfur content of from 0 to 30 mass ppm as a pretreatment step; and isomerizing the light hydrocarbon oil still containing the converted hydrogen sulfide in the presence of a solid super strong acid catalyst under conditions at a temperature of from 190 to 300° C., a pressure of from 1 to 50 kg/cm2g, an H2/oil ratio of from 180 to 1800 liter/liter, and an LHSV of from 2 to 10 hr−1 as an isomerization step.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: January 6, 2004
    Assignees: Cosmo Research Institute, Cosmo Oil Co., Ltd.
    Inventors: Kunihiko Mizuno, Takao Kimura, Takahiro Kawamura, Masahiko Douta, Nobuyasu Ohshio