Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6545466 | MAGNETIC POWDER FOR VALIDITY DETERMINING INK, MANUFACTURING METHOD FOR MAGNETIC POWDER FOR VALIDITY DETERMINING INK, MAGNETIC INK FOR VALIDITY DETERMINATION, PRINTING MEMBER FOR VALIDITY DETERMINATION, DETECTING DEVICE FOR PRINTING MEMBER FOR VALIDITY DETERMINATION, AND VALIDITY DETERMINATION DEVICE | Takao Sawa, Katsutoshi Nakagawa, Teruo Murakami, Hisashi Takahashi, Masao Obama | 2003-04-08 |