Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5681463 | Portable liquid purifying device having activated carbon filter and micro-porous membrane filter | Kazuo Shimizu, Satoru Matumoto, Makoto Nakagawa | 1997-10-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5681463 | Portable liquid purifying device having activated carbon filter and micro-porous membrane filter | Kazuo Shimizu, Satoru Matumoto, Makoto Nakagawa | 1997-10-28 |