Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882248 | Electrophotographic plate for making printing plate comprising phthalocyanine pigment and thiobarbituric acid residue containing compound | Jun Yamada | 1989-11-21 |
| 4817427 | Device for measuring water flow rate in plant stem | Masaharu Kitano | 1989-04-04 |