Patents by Inventor Ikai Wang

Ikai Wang 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).

  • Preparation of catalyst for use in fuel oil hydrodesulfurization and hydrodenitrogenation and catalyst made by the preparation
    Patent number: 5130285
    Abstract: The present invention is related to a process of fuel oil hydrodesulfurization and hydrodenitrogenation, wherein cobalt-molybdenum catalysts are utilized, which are supported on a carrier of titanium-zirconium-molybdenum mixed oxides.
    Type: Grant
    Filed: January 8, 1991
    Date of Patent: July 14, 1992
    Assignee: Chinese Petroleum Corp.
    Inventors: Ikai Wang, Jung-Chung Wu
  • Preparation of titanium-zirconium-vanadium mixed oxides and its application on fuel oil hydrodesulfurization and hydrodenitrogenation
    Patent number: 5032253
    Abstract: The present invention is related to a process of fuel oil hydrodesulfurization and hydrodenitrogenation, wherein a cobalt-Molybdenum catalyst is prepared on a carrier of titanium-zirconium-vanadium mixed oxides, and the reaction is carried out in a fixed-bed reactor under reaction conditions. The present invention discloses the operating conditions of desulfurization and denitrogenation reactions, and the optimal compositions of said catalysts as well as its preparation method.
    Type: Grant
    Filed: February 22, 1990
    Date of Patent: July 16, 1991
    Assignee: Chinese Petroleum Corp.
    Inventors: Ikai Wang, Jung-Chung Wu
  • Novel silicon-modified catalyst Si/HZSM-5, it's preparation, and a process for synthesizing high purity p-dialkyl benzene from monoalkyl benzene by using said catalyst
    Patent number: 4950835
    Abstract: This invention relates to the preparation of a novel Si/HZSM-5 catalyst through vapor phase deposition of Si on the surface of HZSM-5 catalyst which is obtained by ion exchanging ZSM-5 catalyst. The source of deposition Si comes from tetraalkyl ortho-silicate (or tetra-alkoxy silane), Si(OR)4, wherein R represents the alkyl group that contains 1-4 carbon atoms. The silicon deposit will substantially not clog the pores of the catalyst.The present invention is to make use of the modified catalyst in the alkylation or disproportionation reactions in order to enhance the yield of p-dialkylbenzene as an ingredient in the final product of aryl compounds such as toluene or ethylbenzene.
    Type: Grant
    Filed: October 24, 1989
    Date of Patent: August 21, 1990
    Assignee: Taiwan Styrene Monomer Corporation
    Inventors: Ikai Wang, Biing-Jye Lee, Mei-Hwei Chen
  • Method of producing cyclohexanone from cyclohexanol through oxidative dehydrogenation
    Patent number: 4918239
    Abstract: This invention provides a method for producing cyclohexanone from cyclohexanol using oxidative dehydrogenation. More particularly, this invention comprises adding a certain amount of a gaseous oxidant to the cyclohexanol feed stream; and, converting the cyclohexanol to cyclohexanone over a CuO-ZnO catalyst.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: April 17, 1990
    Assignee: National Science Council
    Inventors: Ikai Wang, Yu-Ming Lin
  • Catalytic dewaxing of lubes in reactor fractionator
    Patent number: 4213847
    Abstract: Heavy petroliferous stocks such as vacuum and atmospheric resids, tar sand oils, shale oils, liquids from conversion of coal and the like are concurrently distilled and hydroprocessed for removal of sulfur, nitrogen and metals and are hydrocracked or otherwise hydroprocessed in a packed distillation column under hydrogen pressure wherein the packing is constituted, at least to a substantial extent in both stripping and rectifying sections by catalyst suited to the desired conversions. In a specific application to catalytic hydrodewaxing of lubricating oil stocks, improvement of Viscosity Index (VI) of dewaxed product results.
    Type: Grant
    Filed: May 16, 1979
    Date of Patent: July 22, 1980
    Assignee: Mobil Oil Corporation
    Inventors: Nai Y. Chen, Ikai Wang
  • Catalytic conversion of hydrocarbons in reactor fractionator
    Patent number: 4194964
    Abstract: Heavy petroliferous stocks such as vacuum and atmospheric resids, tar sand oils, shale oils, liquids from conversion of coal and the like are concurrently distilled and hydroprocessed for removal of sulfur, nitrogen and metals and are hydrocracked or otherwise hydroprocessed in a packed distillation column under hydrogen pressure wherein the packing is constituted, at least to a substantial extent in both stripping and rectifying sections by catalyst suited to the desired conversions.
    Type: Grant
    Filed: July 10, 1978
    Date of Patent: March 25, 1980
    Assignee: Mobil Oil Corporation
    Inventors: Nai Y. Chen, Ikai Wang