Patents by Inventor Takeshi Shibano

Takeshi Shibano 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 regenerating a catalyst
    Patent number: 4604370
    Abstract: A process for regenerating a Mo.Bi-based multi-oxide catalyst the catalytic performance of which has deteriorated as a result of its use in vapor-phase catalytic oxidation of propylene or isobutene to prepare acrolein or methacrolein, respectively, which process comprises: heating the deteriorated Mo.Bi-based multi-oxide catalyst in an atmosphere consisting essentially of air at a temperature of 380.degree. C. to 540.degree. C., so as to attain at least partial restoration of the catalytic performance thereof.
    Type: Grant
    Filed: July 9, 1985
    Date of Patent: August 5, 1986
    Assignee: Mitsubishi Petrochemical Company, Limited
    Inventors: Kohei Sarumaru, Takeshi Shibano, Yoichi Ishii, Etsuji Yamamoto
  • Production of acrylic acid
    Patent number: 4365087
    Abstract: In the production of acrylic acid by a two-stage, vapor-phase catalytic oxidation of propylene, a composite oxide catalyst expressed by the formula Mo.sub.a Bi.sub.b Ni.sub.c Co.sub.d Fe.sub.e Na.sub.f Mn.sub.g B.sub.h K.sub.i Si.sub.j O.sub.x is used in the first-stage reaction, which is carried out under specific reaction and operational conditions, and the second-stage reaction is carried under specific reaction and operational conditions while oxygen is supplied by a specific mode.
    Type: Grant
    Filed: January 29, 1980
    Date of Patent: December 21, 1982
    Assignee: Mitsubishi Petrochemical Company Limited
    Inventors: Koju Kadowaki, Kohei Sarumaru, Takeshi Shibano