Patents by Inventor Tutomu Ueda

Tutomu Ueda 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).

  • Particulate porous ammoxidation catalyst
    Patent number: 7473666
    Abstract: A particulate porous ammoxidation catalyst for use in producing acrylonitrile or methacrylonitrile by reacting propylene, isobutene or tert-butyl alcohol with molecular oxygen and ammonia in a fluidized-bed reactor, the catalyst comprising a metal oxide and a silica carrier having supported thereon the metal oxide, wherein the metal oxide contains at least two elements selected from the group consisting of molybdenum, bismuth, iron, vanadium, antimony, tellurium and niobium, and the catalyst having a particle diameter distribution wherein the amount of catalyst particles having a particle diameter of from 5 to 200 ?m is from 90 to 100% by weight, based on the weight of the catalyst, and having a pore distribution wherein the cumulative pore volume of pores having a pore diameter of 80 ? or less is not more than 20%, based on the total pore volume of the catalyst and wherein the cumulative pore volume of pores having a pore diameter of 1,000 ? or more is not more than 20%, based on the total pore volume of the
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: January 6, 2009
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Hiroyuki Yanagi, Hideo Midorikawa, Tutomu Ueda
  • Particulate porous ammoxidation catalyst
    Publication number: 20060155139
    Abstract: A particulate porous ammoxidation catalyst for use in producing acrylonitrile or methacrylonitrile by reacting propylene, isobutene or tert-butyl alcohol with molecular oxygen and ammonia in a fluidized-bed reactor, the catalyst comprising a metal oxide and a silica carrier having supported thereon the metal oxide, wherein the metal oxide contains at least two elements selected from the group consisting of molybdenum, bismuth, iron, vanadium, antimony, tellurium and niobium, and the catalyst having a particle diameter distribution wherein the amount of catalyst particles having a particle diameter of from 5 to 200 ?m is from 90 to 100% by weight, based on the weight of the catalyst, and having a pore distribution wherein the cumulative pore volume of pores having a pore diameter of 80 ? or less is not more than 20%, based on the total pore volume of the catalyst and wherein the cumulative pore volume of pores having a pore diameter of 1,000 ? or more is not more than 20%, based on the total pore volume of the
    Type: Application
    Filed: February 27, 2004
    Publication date: July 13, 2006
    Inventors: Hiroyuki Yanagi, Hideo Midorikawa, Tutomu Ueda