Patents by Inventor Masami Kanzaki

Masami Kanzaki 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).

  • Patent number: 4882581
    Abstract: The portable terminal keyboard includes silicone rubber mixed with phosphorescent material used on the external exposed surface of the keyboard and conventional silicone rubber used for the moving parts, so that it is luminous for a certain duration by being irradiated for a while with a light source, thereby facilitating the user's entry operation and also enhancing the durability of the keyboard. The keyboard has its key mat made of a magnetic material so that it is attached by magnetism to the main frane, thereby faciliting replacement with a different key mat. The magnetic key mat structure allows the single access attachment and eliminates such conventional fixtures as lugs, whereby the key mat can be replaced more easily even in darkness and the lugs or the like are not present to be damaged as would be otherwise caused by frequent key mat replacement.
    Type: Grant
    Filed: February 18, 1988
    Date of Patent: November 21, 1989
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazuhiko Inobe, Masami Kanzaki