Patents by Inventor Michiko Yonemura

Michiko Yonemura 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).

  • Novel ceramic material, method for the preparation thereof and ceramic shaped body obtained therefrom
    Patent number: 4981824
    Abstract: A novel ceramic material affording a ceramic molded bodies having a high toughness and a high tensile strength is disclosed which comprises a smectite clay mineral having at least a portion of ion-exchangeable cations thereof ion-exchanged with bismuth ions. The ceramic material is prepared by treating a smectite clay mineral with an aqueous solution containing bismuth ions to ion-exchange at least a portion of ion-exchangeable cations thereof with bismuth ions.
    Type: Grant
    Filed: March 15, 1989
    Date of Patent: January 1, 1991
    Assignee: Director - General of Agency of Industrial Science and Technology
    Inventors: Michiko Yonemura, Tadao Sekine, Yoshimichi Kiyozumi, Kunio Suzuki, Kunio Uchida, Fumikazu Ikazaki, Shigemitsu Shin