Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5345763 | Secondary air control system for internal combustion engine | — | 1994-09-13 |
| 5345442 | Multi-highway system of digital exchange and digital exchange having the multi-highway system | — | 1994-09-06 |
| 5329058 | Process for producing alkenylbenzene | Keizo Shimada, Koji Sumitani, Seiji Itoh | 1994-07-12 |