Patents by Inventor Ryokichi Tamaoki

Ryokichi Tamaoki 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).

  • Telephone card and telephone card-operated telephone
    Patent number: 4868849
    Abstract: A telephone card includes a remaining call number recording area for recording a number of remaining calls which can be made using the card, and a telephone number storage area for storing a telephone number of a party to be called using the card. The card is inserted into a telephone set to automatically call a telephone set corresponding to the telephone number stored in the telephone number storage area.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: September 19, 1989
    Assignees: Pitsuko Funaki, Izuna Funaki, Ayano Funaki
    Inventor: Ryokichi Tamaoki