Patents by Inventor Kanemaru

Kanemaru 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 preparing lower alcohols
    Patent number: 4351971
    Abstract: Lower alcohols are prepared by hydrating the corresponding olefin in an aqueous solution containing a chromium compound, phosphoric acid and heteropolyacid. Phosphoric acid has a high catalytic activity for the hydration of lower olefins, but causes a remarkable corrosion to an apparatus material under the state of an aqueous solution. The catalytic composition consisting of phosphoric acid and heteropolyacid is improved in activity and stability. Owing to the coexistence of heteropolyacid an acid degree is raised, nevertheless the corrosion of apparatus materials is not increased. As an anti-corrosive a chromium compound is incorporated into the aqueous solution containing the catalytic composition of phosphoric acid and heteropolyacid.
    Type: Grant
    Filed: March 4, 1981
    Date of Patent: September 28, 1982
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Kanemaru, Kenji Yoshida, Thikashi Higashino, Tadashi Kozima