Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10189720 | Water purifying cartridge and pitcher-type water purifier | Takeshi Ishikawa, Shouzou Kimura | 2019-01-29 |
| 10023476 | Water filter cartridge and water purifier | Masanori Itakura, Masanori Ito, Hiroe Yoshinobu | 2018-07-17 |
| D751168 | Cartridge for water purifier | Takeshi Ishikawa, Tsuyoshi Doi, Hua Li | 2016-03-08 |
| D751169 | Cartridge for water purifier | Takeshi Ishikawa, Tsuyoshi Doi, Hua Li | 2016-03-08 |
| D740916 | Water purifier | Tsuyoshi Doi, Takeshi Ishikawa, Stefano Paccamiccio | 2015-10-13 |
| D739494 | Main body for water purifier | Tsuyoshi Doi, Takeshi Ishikawa, Stefano Paccamiccio | 2015-09-22 |
| 9005435 | Structure for opening section, and water purification cartridge | Atsushi Hatakeyama | 2015-04-14 |
| D638909 | Water purifier | Tamotsu Matsumoto, Makiko Kida, Masaru Araki, Hiroki Sakakibara, Satoru Kurihara | 2011-05-31 |
| D574924 | Water purifier | Futomitsu Horiuchi, Ken Gotou, Tsuyoshi Doi, Tetsuya Matono | 2008-08-12 |