Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4821175 | Database processing device | Sadayuki Hikita, Suguru Kawakami, Akifumi Sakamoto, Hideki Yamamoto | 1989-04-11 |
| 4811207 | Join operation processing system in distributed data base management system | Sakayuki Hikita, Suguru Kawakami, Akifumi Sakamoto, Hideki Yamamoto | 1989-03-07 |