Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4927494 | Apparatus for preparing high-concentration alkali | Robert Winkler, Takayuki Kobayashi, Shinjiro Yokota | 1990-05-22 |
| 4830707 | Method and apparatus for preparing high-concentration alkali | Robert Winkler, Yakayuki Kobayashi, Shinjiro Yokota | 1989-05-16 |