Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6717522 | Message providing apparatus | Toshihiko Kobayashi | 2004-04-06 |
| 4325981 | Method of preventing color accurate reproductions using color photocopiers and the like | Takeo Sugiura, Keiji Miyajima, Kiyoshi Masui | 1982-04-20 |
| 4277514 | Forgery resistant document with colored areas and method for thwarting reproduction of same | Takeo Sugiura, Keiji Miyajima, Kiyoshi Masui | 1981-07-07 |