Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853873 | Knowledge information processing system and method thereof | Chizuko Yasunobu, Tetsuya Masuishi | 1989-08-01 |
| 4843247 | Determination of asphaltene content and device therefor | Seigo Yamazoe | 1989-06-27 |
| 4828598 | Method for bending glass plates for a laminated glass | Takaharu Imamura, Chikao Aruga, Tohru Kawatsura | 1989-05-09 |