Patents by Inventor Kinya Yamazaki

Kinya Yamazaki 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 the hydration of olefins
    Patent number: 3996298
    Abstract: A process for the preparation of monohydric alcohols by contacting a monoolefin of 2-4 carbon atoms with an aqueous solution containing a heteropoly-acid ion, thereby subjecting the olefin to a hydration reaction, characterized in that said aqueous solution contains the heteropoly-acid ion in a concentration of at least 1/40,000 mol per liter and has a pH ranging from 2.0 to 4.5, and the aqueous solution is heated to a temperature sufficiently high for initiating the hydration reaction, while the free iron ion concentration therein is maintained at not higher than 10 ppm substantially throughout the whole hydration reaction period.
    Type: Grant
    Filed: November 1, 1974
    Date of Patent: December 7, 1976
    Assignee: Tokuyama Soda Kabushiki Kaisha
    Inventors: Yusuke Izumi, Sumio Akiyama, Kinya Yamazaki, Masato Todo, Takao Tomita