Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE39522 | Ultraviolet ray irradiation equipment having scraper rings fitted to light transmission tubes | — | 2007-03-20 |
| RE38173 | Ultraviolet ray irradiation equipment having scrapper rings fitted to light transmission tubes | — | 2003-07-08 |
| 6013917 | UV ray irradiation apparatus having scraper rings fitted to light transmission tubes | — | 2000-01-11 |
| 5874740 | Ultraviolet ray irradiation equipment having scraper rings fitted to light transmission tubes | — | 1999-02-23 |