Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6123777 | Method for cleaning structural surface | Nobuo Sakurai, Hanako Nagai, Gun-ichi Kobayashi | 2000-09-26 |
| 5779811 | Method for peeling off dirt from wall surface by using peelable polymer membrane | Minori Machii, Nobuyoshi Nanba, Noboru SAKATA, Nobuo Sakurai, Yasuhiko Furusawa | 1998-07-14 |