Patents by Inventor Nobuo Kusano

Nobuo Kusano 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 producing terephthalic acid
    Patent number: 4160108
    Abstract: In a process for producing terephthalic acid which comprises subjecting p-xylene to a liquid-phase oxidation in a lower aliphatic carboxylic acid solvent in the presence of a cobalt compound-manganese compound-bromine or bromine compound catalyst and molecular oxygen, the improvement which comprisesThe % by weight based on the weight of said lower aliphatic carboxylic acid solvent of the cobalt component (as cobalt) in the catalyst being within the range of-6.00.times.10.sup.-4 t+1.65.times.10.sup.-1 to -2.50.times.10.sup.-3 t+6.25.times.10.sup.-1wherein t is the reaction temperature in .degree. C.;the weight ratio of the manganese component (as manganese) in the catalyst to the cobalt component in the catalyst ranges from 0.25:1 to 1:1 and also the amount of the manganese component in the catalyst is 0.
    Type: Grant
    Filed: February 18, 1977
    Date of Patent: July 3, 1979
    Assignee: Matsuyama Petrochemicals Inc.
    Inventors: Motoo Shigeyasu, Nobuo Kusano
  • Method of recovering heavy metal [-bromine] bromides and hydrobromic acid catalysts for liquid-phase oxidation [catalyst]
    Patent number: 3959449
    Abstract: A method of recovering in highly pure states heavy metals such as cobalt, manganese, etc.
    Type: Grant
    Filed: April 1, 1974
    Date of Patent: May 25, 1976
    Assignee: Matsuyama Petrochemicals Inc.
    Inventors: Motoo Shigeyasu, Takeo Ozaki, Nobuo Kusano