Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12313296 | Heat exchanger and water heater | Takeshi Ohigashi, Shigeo Sugie, Kengo Horiuchi, Naoya Shiotsu | 2025-05-27 |
| 12305884 | Heat exchanger and water heater equipped with the same | — | 2025-05-20 |
| 12253311 | Heat exchanger and water heating device including the same | Naoya Shiotsu | 2025-03-18 |
| 11774138 | Hot water device | Masaki Kondo | 2023-10-03 |
| 11421946 | Heat exchanger and water heating apparatus including the same | Masahiro Iguchi | 2022-08-23 |
| 11293702 | Heat exchanger and hot water apparatus | Takeshi Ohigashi | 2022-04-05 |
| D917031 | Heat exchanger for water heater | Takeshi Oohigashi, Masaki Kondo | 2021-04-20 |
| D916257 | Heat exchanger for water heater | Takeshi Oohigashi, Masaki Kondo | 2021-04-13 |
| D916258 | Heat exchanger for water heater | Takeshi Oohigashi, Masaki Kondo | 2021-04-13 |
| 10948236 | Heat exchanger and water heater including same | Takeshi Ohigashi, Nobuhiro Takeda | 2021-03-16 |
| 10890356 | Heat exchange device and heat source machine | Naoya Shiotsu, Takeshi Ohigashi, Masaki Kondo | 2021-01-12 |
| D904588 | Heat exchanger for water heater | Takeshi Oohigashi, Masaki Kondo | 2020-12-08 |
| D904589 | Heat exchanger for water heater | Takeshi Oohigashi, Masaki Kondo | 2020-12-08 |
| D904587 | Heat exchanger for water heater | Takeshi Oohigashi, Masaki Kondo | 2020-12-08 |
| 10072842 | Water heater | Shuji Kameyama, Yasutaka Kuriyama, Keigo Fukunishi, Tatsuya KARAKI | 2018-09-11 |
| 10012414 | Water heater | — | 2018-07-03 |
| 9945581 | Water heater | Yu FUJIMOTO | 2018-04-17 |
| 9746204 | Water heater | Hironao Matsunaga, Shuji Kameyama, Keigo Fukunishi | 2017-08-29 |
| 9513030 | Water heater | Tatsuya KARAKI, Yasutaka Kuriyama, Shuji Kameyama, Keigo Fukunishi | 2016-12-06 |
| 9228742 | Rich-lean combustion burner and combustion apparatus | Takashi Akiyama, Takeshi Wakada, Toshio Watanabe, Itsuo Nagai, Yasutaka Kuriyama +2 more | 2016-01-05 |
| 9115888 | Rich-lean combustion burner | Takashi Akiyama, Takeshi Wakada, Itsuo Nagai, Ryosuke Umakoshi | 2015-08-25 |
| 9115889 | Rich-lean combustion burner and combustion apparatus | Keigo Fukunishi, Takeshi Wakada, Toshio Watanabe, Takashi Akiyama, Yasutaka Kuriyama +2 more | 2015-08-25 |
| 9115891 | Rich-lean combustion burner | Takashi Akiyama, Takeshi Wakada, Yasutaka Kuriyama, Ryosuke Umakoshi, Itsuo Nagai | 2015-08-25 |