Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5448696 | Map information system capable of displaying layout information | Shigeru Shimada, Fumio Kawamura, Kazuyuki Suzuki, Shirou Takei | 1995-09-05 |
| 5210868 | Database system and matching method between databases | Shigeru Shimada, Kazuyuki Suzuki, Naoki Yamamoto, Sirou Takei | 1993-05-11 |