Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7231685 | Cleaning article | Yoshinori Tanaka, Masatoshi Fujiwara | 2007-06-19 |
| 7228587 | Cleaning article | Yoshinori Tanaka, Masatoshi Fujiwara | 2007-06-12 |
| 7219386 | Holding device and cleaning tool with the holding device | Yoshinori Tanaka, Masatoshi Fujiwara | 2007-05-22 |
| 6813801 | Cleaning article | Yoshinori Tanaka, Masatoshi Fujiwara | 2004-11-09 |