Patents by Inventor Testuo Aizawa

Testuo Aizawa 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).

  • Card
    Patent number: 5891576
    Abstract: A card having a paper as a base material laminated with decomposable plastic layers having such properties as durability, banding resistance, water resistance, chemical resistance, waterproofness, surface smoothness, glossiness end workability. Any visible information/design portion and/or a magnetic recording portion may be formed as required. The present invention improves the durability of a card using paper as a base material and provides the card which spontaneously decomposes even when left after being discarded.
    Type: Grant
    Filed: October 10, 1995
    Date of Patent: April 6, 1999
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Toshibumi Imai, Akihiko Kobayashi, Tsutomu Shikakubo, Masayuki Taniguchi, Kazuya Yabusa, Testuo Aizawa, Motoko Yoshikawa